Remove trailing whitespace from license text

93 files changed, 465 insertions, 469 deletions

diff --git a/lib/spack/docs/conf.py b/lib/spack/docs/conf.py
index cea0b04793..700cb00299 100644
--- a/lib/spack/docs/conf.py
+++ b/lib/spack/docs/conf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/docs/exts/sphinxcontrib/__init__.py b/lib/spack/docs/exts/sphinxcontrib/__init__.py
index da0488bb3c..838d616eb4 100644
--- a/lib/spack/docs/exts/sphinxcontrib/__init__.py
+++ b/lib/spack/docs/exts/sphinxcontrib/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/docs/exts/sphinxcontrib/programoutput.py b/lib/spack/docs/exts/sphinxcontrib/programoutput.py
index 12d8e5a3c5..ff006acf72 100644
--- a/lib/spack/docs/exts/sphinxcontrib/programoutput.py
+++ b/lib/spack/docs/exts/sphinxcontrib/programoutput.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/__init__.py b/lib/spack/spack/__init__.py
index e33bcdb98b..911309fed3 100644
--- a/lib/spack/spack/__init__.py
+++ b/lib/spack/spack/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/architecture.py b/lib/spack/spack/architecture.py
index 63034ddea2..92e4b2742d 100644
--- a/lib/spack/spack/architecture.py
+++ b/lib/spack/spack/architecture.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/__init__.py b/lib/spack/spack/cmd/__init__.py
index b51c67a860..bfd69bbe56 100644
--- a/lib/spack/spack/cmd/__init__.py
+++ b/lib/spack/spack/cmd/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/arch.py b/lib/spack/spack/cmd/arch.py
index 56897bcb7a..aeb2ba3ff8 100644
--- a/lib/spack/spack/cmd/arch.py
+++ b/lib/spack/spack/cmd/arch.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/bootstrap.py b/lib/spack/spack/cmd/bootstrap.py
index f2cf387f23..381f4c717c 100644
--- a/lib/spack/spack/cmd/bootstrap.py
+++ b/lib/spack/spack/cmd/bootstrap.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/checksum.py b/lib/spack/spack/cmd/checksum.py
index af304a4f1e..86bbd90134 100644
--- a/lib/spack/spack/cmd/checksum.py
+++ b/lib/spack/spack/cmd/checksum.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/clean.py b/lib/spack/spack/cmd/clean.py
index 2ceea59a87..d74c5252c8 100644
--- a/lib/spack/spack/cmd/clean.py
+++ b/lib/spack/spack/cmd/clean.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/compilers.py b/lib/spack/spack/cmd/compilers.py
index d07349ca5d..8b1fb4d03a 100644
--- a/lib/spack/spack/cmd/compilers.py
+++ b/lib/spack/spack/cmd/compilers.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/create.py b/lib/spack/spack/cmd/create.py
index 2ef8df4f01..ed454887bf 100644
--- a/lib/spack/spack/cmd/create.py
+++ b/lib/spack/spack/cmd/create.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/doc.py b/lib/spack/spack/cmd/doc.py
index a5d8b4ad00..601ae26e5e 100644
--- a/lib/spack/spack/cmd/doc.py
+++ b/lib/spack/spack/cmd/doc.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/edit.py b/lib/spack/spack/cmd/edit.py
index 9cb6695ab5..b04899ad84 100644
--- a/lib/spack/spack/cmd/edit.py
+++ b/lib/spack/spack/cmd/edit.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/fetch.py b/lib/spack/spack/cmd/fetch.py
index 0e3b3b577d..86bc9cdef3 100644
--- a/lib/spack/spack/cmd/fetch.py
+++ b/lib/spack/spack/cmd/fetch.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/find.py b/lib/spack/spack/cmd/find.py
index 2c628c6a56..95abbb72bd 100644
--- a/lib/spack/spack/cmd/find.py
+++ b/lib/spack/spack/cmd/find.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/graph.py b/lib/spack/spack/cmd/graph.py
index 1b93fa8f4e..07fe67ca4b 100644
--- a/lib/spack/spack/cmd/graph.py
+++ b/lib/spack/spack/cmd/graph.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/help.py b/lib/spack/spack/cmd/help.py
index 0b108f9296..eae3aabd97 100644
--- a/lib/spack/spack/cmd/help.py
+++ b/lib/spack/spack/cmd/help.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/info.py b/lib/spack/spack/cmd/info.py
index d6c5c2c062..b4d9a8339d 100644
--- a/lib/spack/spack/cmd/info.py
+++ b/lib/spack/spack/cmd/info.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/install.py b/lib/spack/spack/cmd/install.py
index c14543b0ce..f80baf0ad6 100644
--- a/lib/spack/spack/cmd/install.py
+++ b/lib/spack/spack/cmd/install.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/list.py b/lib/spack/spack/cmd/list.py
index 2b16921d4f..2cfdd9863d 100644
--- a/lib/spack/spack/cmd/list.py
+++ b/lib/spack/spack/cmd/list.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -34,4 +34,3 @@ def setup_parser(subparser):
 def list(parser, args):
     # Print all the package names in columns
     colify(packages.all_package_names())
-
diff --git a/lib/spack/spack/cmd/providers.py b/lib/spack/spack/cmd/providers.py
index 700c27f233..dc40b6b9ff 100644
--- a/lib/spack/spack/cmd/providers.py
+++ b/lib/spack/spack/cmd/providers.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/purge.py b/lib/spack/spack/cmd/purge.py
index e733149066..9b96937149 100644
--- a/lib/spack/spack/cmd/purge.py
+++ b/lib/spack/spack/cmd/purge.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/python.py b/lib/spack/spack/cmd/python.py
index 55952fbadb..6dd8c324a4 100644
--- a/lib/spack/spack/cmd/python.py
+++ b/lib/spack/spack/cmd/python.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/spec.py b/lib/spack/spack/cmd/spec.py
index 50345d81f5..fcff743026 100644
--- a/lib/spack/spack/cmd/spec.py
+++ b/lib/spack/spack/cmd/spec.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/stage.py b/lib/spack/spack/cmd/stage.py
index 67f1e69b5a..dd03114d4c 100644
--- a/lib/spack/spack/cmd/stage.py
+++ b/lib/spack/spack/cmd/stage.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/test.py b/lib/spack/spack/cmd/test.py
index 6cf8434783..41cba4b66c 100644
--- a/lib/spack/spack/cmd/test.py
+++ b/lib/spack/spack/cmd/test.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/uninstall.py b/lib/spack/spack/cmd/uninstall.py
index 7782ced92a..c30746b0d6 100644
--- a/lib/spack/spack/cmd/uninstall.py
+++ b/lib/spack/spack/cmd/uninstall.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/cmd/versions.py b/lib/spack/spack/cmd/versions.py
index ebad532630..9ecb9875c2 100644
--- a/lib/spack/spack/cmd/versions.py
+++ b/lib/spack/spack/cmd/versions.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/colify.py b/lib/spack/spack/colify.py
index 7ec3894ef3..1f66416e69 100644
--- a/lib/spack/spack/colify.py
+++ b/lib/spack/spack/colify.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/color.py b/lib/spack/spack/color.py
index 7a07ccb0d4..df123f7ece 100644
--- a/lib/spack/spack/color.py
+++ b/lib/spack/spack/color.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilation.py b/lib/spack/spack/compilation.py
index 28c043615e..c4561a4122 100644
--- a/lib/spack/spack/compilation.py
+++ b/lib/spack/spack/compilation.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilers/__init__.py b/lib/spack/spack/compilers/__init__.py
index 19fef739e3..369171a59b 100644
--- a/lib/spack/spack/compilers/__init__.py
+++ b/lib/spack/spack/compilers/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilers/gcc.py b/lib/spack/spack/compilers/gcc.py
index 49fa23ed6e..073219dc20 100644
--- a/lib/spack/spack/compilers/gcc.py
+++ b/lib/spack/spack/compilers/gcc.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/compilers/intel.py b/lib/spack/spack/compilers/intel.py
index 6cbdae2e2e..c27fee1719 100644
--- a/lib/spack/spack/compilers/intel.py
+++ b/lib/spack/spack/compilers/intel.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/concretize.py b/lib/spack/spack/concretize.py
index bea859b2d0..790d67cac8 100644
--- a/lib/spack/spack/concretize.py
+++ b/lib/spack/spack/concretize.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/directory_layout.py b/lib/spack/spack/directory_layout.py
index 11922d0336..bc4ecf802a 100644
--- a/lib/spack/spack/directory_layout.py
+++ b/lib/spack/spack/directory_layout.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/error.py b/lib/spack/spack/error.py
index d527802dab..b593ff9fc3 100644
--- a/lib/spack/spack/error.py
+++ b/lib/spack/spack/error.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/globals.py b/lib/spack/spack/globals.py
index cdfc951ac3..4da516803f 100644
--- a/lib/spack/spack/globals.py
+++ b/lib/spack/spack/globals.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/multimethod.py b/lib/spack/spack/multimethod.py
index c28f51002e..710c790b63 100644
--- a/lib/spack/spack/multimethod.py
+++ b/lib/spack/spack/multimethod.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/package.py b/lib/spack/spack/package.py
index 0c38b70611..2ea367fdc9 100644
--- a/lib/spack/spack/package.py
+++ b/lib/spack/spack/package.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/__init__.py b/lib/spack/spack/packages/__init__.py
index 4aba482051..471b48d902 100644
--- a/lib/spack/spack/packages/__init__.py
+++ b/lib/spack/spack/packages/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/callpath.py b/lib/spack/spack/packages/callpath.py
index 8b4caecd22..5d92d77302 100644
--- a/lib/spack/spack/packages/callpath.py
+++ b/lib/spack/spack/packages/callpath.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/cmake.py b/lib/spack/spack/packages/cmake.py
index 7f78401159..d4ab3402cd 100644
--- a/lib/spack/spack/packages/cmake.py
+++ b/lib/spack/spack/packages/cmake.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/dyninst.py b/lib/spack/spack/packages/dyninst.py
index 5a23f4e5e1..2318317de5 100644
--- a/lib/spack/spack/packages/dyninst.py
+++ b/lib/spack/spack/packages/dyninst.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/libdwarf.py b/lib/spack/spack/packages/libdwarf.py
index e1ad4aaccf..657e84705a 100644
--- a/lib/spack/spack/packages/libdwarf.py
+++ b/lib/spack/spack/packages/libdwarf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/libelf.py b/lib/spack/spack/packages/libelf.py
index c64e83d232..f663ba750d 100644
--- a/lib/spack/spack/packages/libelf.py
+++ b/lib/spack/spack/packages/libelf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/libunwind.py b/lib/spack/spack/packages/libunwind.py
index 9af59eb4d4..c93b5b2c98 100644
--- a/lib/spack/spack/packages/libunwind.py
+++ b/lib/spack/spack/packages/libunwind.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/mpich.py b/lib/spack/spack/packages/mpich.py
index 354643f6bc..af9e8266dc 100644
--- a/lib/spack/spack/packages/mpich.py
+++ b/lib/spack/spack/packages/mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/packages/mpileaks.py b/lib/spack/spack/packages/mpileaks.py
index dcac2de9db..3307b9fdee 100644
--- a/lib/spack/spack/packages/mpileaks.py
+++ b/lib/spack/spack/packages/mpileaks.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/parse.py b/lib/spack/spack/parse.py
index ed7761fb88..bc12ec258c 100644
--- a/lib/spack/spack/parse.py
+++ b/lib/spack/spack/parse.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/relations.py b/lib/spack/spack/relations.py
index dc88f2f37f..1c24db5fa6 100644
--- a/lib/spack/spack/relations.py
+++ b/lib/spack/spack/relations.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index aa11d12a3f..9fecc1a251 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/stage.py b/lib/spack/spack/stage.py
index ff1efe7be6..6c303d6824 100644
--- a/lib/spack/spack/stage.py
+++ b/lib/spack/spack/stage.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/__init__.py b/lib/spack/spack/test/__init__.py
index ba69ec1df3..8f4015529e 100644
--- a/lib/spack/spack/test/__init__.py
+++ b/lib/spack/spack/test/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/concretize.py b/lib/spack/spack/test/concretize.py
index 83d447de1a..538c13f2cd 100644
--- a/lib/spack/spack/test/concretize.py
+++ b/lib/spack/spack/test/concretize.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/__init__.py b/lib/spack/spack/test/mock_packages/__init__.py
index 06656c4a75..1c388f31c5 100644
--- a/lib/spack/spack/test/mock_packages/__init__.py
+++ b/lib/spack/spack/test/mock_packages/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/callpath.py b/lib/spack/spack/test/mock_packages/callpath.py
index c7868c88ed..b4fd0f4482 100644
--- a/lib/spack/spack/test/mock_packages/callpath.py
+++ b/lib/spack/spack/test/mock_packages/callpath.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/direct_mpich.py b/lib/spack/spack/test/mock_packages/direct_mpich.py
index 372a34d319..d702e4481b 100644
--- a/lib/spack/spack/test/mock_packages/direct_mpich.py
+++ b/lib/spack/spack/test/mock_packages/direct_mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/dyninst.py b/lib/spack/spack/test/mock_packages/dyninst.py
index 89bf017005..d32c4b5504 100644
--- a/lib/spack/spack/test/mock_packages/dyninst.py
+++ b/lib/spack/spack/test/mock_packages/dyninst.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/fake.py b/lib/spack/spack/test/mock_packages/fake.py
index 0218d7d1f7..88bc6d8669 100644
--- a/lib/spack/spack/test/mock_packages/fake.py
+++ b/lib/spack/spack/test/mock_packages/fake.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/indirect_mpich.py b/lib/spack/spack/test/mock_packages/indirect_mpich.py
index 61707e5ccc..a53cb9330c 100644
--- a/lib/spack/spack/test/mock_packages/indirect_mpich.py
+++ b/lib/spack/spack/test/mock_packages/indirect_mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/libdwarf.py b/lib/spack/spack/test/mock_packages/libdwarf.py
index 502417d843..0f4d55fd88 100644
--- a/lib/spack/spack/test/mock_packages/libdwarf.py
+++ b/lib/spack/spack/test/mock_packages/libdwarf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/libelf.py b/lib/spack/spack/test/mock_packages/libelf.py
index 08e6543475..5ac07de4e3 100644
--- a/lib/spack/spack/test/mock_packages/libelf.py
+++ b/lib/spack/spack/test/mock_packages/libelf.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/mpich.py b/lib/spack/spack/test/mock_packages/mpich.py
index 6e2ddb17c7..2a8e1cebe3 100644
--- a/lib/spack/spack/test/mock_packages/mpich.py
+++ b/lib/spack/spack/test/mock_packages/mpich.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/mpich2.py b/lib/spack/spack/test/mock_packages/mpich2.py
index ce2dfcc63b..84dce4cccb 100644
--- a/lib/spack/spack/test/mock_packages/mpich2.py
+++ b/lib/spack/spack/test/mock_packages/mpich2.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/mpileaks.py b/lib/spack/spack/test/mock_packages/mpileaks.py
index 68393588d4..c34d5991e6 100644
--- a/lib/spack/spack/test/mock_packages/mpileaks.py
+++ b/lib/spack/spack/test/mock_packages/mpileaks.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/multimethod.py b/lib/spack/spack/test/mock_packages/multimethod.py
index d303e55ea0..75b1606ffc 100644
--- a/lib/spack/spack/test/mock_packages/multimethod.py
+++ b/lib/spack/spack/test/mock_packages/multimethod.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages/zmpi.py b/lib/spack/spack/test/mock_packages/zmpi.py
index 467d428b0a..a86bd706bb 100644
--- a/lib/spack/spack/test/mock_packages/zmpi.py
+++ b/lib/spack/spack/test/mock_packages/zmpi.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/mock_packages_test.py b/lib/spack/spack/test/mock_packages_test.py
index ee1e62afc5..441f4b7fbe 100644
--- a/lib/spack/spack/test/mock_packages_test.py
+++ b/lib/spack/spack/test/mock_packages_test.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/multimethod.py b/lib/spack/spack/test/multimethod.py
index 104e779357..79b55bf73e 100644
--- a/lib/spack/spack/test/multimethod.py
+++ b/lib/spack/spack/test/multimethod.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/spec_dag.py b/lib/spack/spack/test/spec_dag.py
index a6b88277cf..da0b878ce1 100644
--- a/lib/spack/spack/test/spec_dag.py
+++ b/lib/spack/spack/test/spec_dag.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/spec_semantics.py b/lib/spack/spack/test/spec_semantics.py
index 36a7a4a7fc..dbd04f9449 100644
--- a/lib/spack/spack/test/spec_semantics.py
+++ b/lib/spack/spack/test/spec_semantics.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/spec_syntax.py b/lib/spack/spack/test/spec_syntax.py
index 2d368d8569..20468be1b1 100644
--- a/lib/spack/spack/test/spec_syntax.py
+++ b/lib/spack/spack/test/spec_syntax.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/stage.py b/lib/spack/spack/test/stage.py
index 4843070781..0b572950ad 100644
--- a/lib/spack/spack/test/stage.py
+++ b/lib/spack/spack/test/stage.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/url_parse.py b/lib/spack/spack/test/url_parse.py
index 0b94f4665d..f02bb72075 100644
--- a/lib/spack/spack/test/url_parse.py
+++ b/lib/spack/spack/test/url_parse.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/test/versions.py b/lib/spack/spack/test/versions.py
index 2ea1bbe9d2..37fd28a8e7 100644
--- a/lib/spack/spack/test/versions.py
+++ b/lib/spack/spack/test/versions.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/tty.py b/lib/spack/spack/tty.py
index a38e97fc7c..757e4cc602 100644
--- a/lib/spack/spack/tty.py
+++ b/lib/spack/spack/tty.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/url.py b/lib/spack/spack/url.py
index 3250632eef..8e4f39899d 100644
--- a/lib/spack/spack/url.py
+++ b/lib/spack/spack/url.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/__init__.py b/lib/spack/spack/util/__init__.py
index 06656c4a75..1c388f31c5 100644
--- a/lib/spack/spack/util/__init__.py
+++ b/lib/spack/spack/util/__init__.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/compression.py b/lib/spack/spack/util/compression.py
index 59620dbe37..ca98160bdd 100644
--- a/lib/spack/spack/util/compression.py
+++ b/lib/spack/spack/util/compression.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/crypto.py b/lib/spack/spack/util/crypto.py
index 066589bb8b..4d8681bed9 100644
--- a/lib/spack/spack/util/crypto.py
+++ b/lib/spack/spack/util/crypto.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -102,4 +102,3 @@ class Checker(object):
         self.sum = checksum(
             self.hash_fun, filename, block_size=self.block_size)
         return self.sum == self.hexdigest
-
diff --git a/lib/spack/spack/util/environment.py b/lib/spack/spack/util/environment.py
index 06750e9f35..435d912185 100644
--- a/lib/spack/spack/util/environment.py
+++ b/lib/spack/spack/util/environment.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/executable.py b/lib/spack/spack/util/executable.py
index 1b159f34eb..58c70ed28c 100644
--- a/lib/spack/spack/util/executable.py
+++ b/lib/spack/spack/util/executable.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/filesystem.py b/lib/spack/spack/util/filesystem.py
index ad0151c176..d3c7b16457 100644
--- a/lib/spack/spack/util/filesystem.py
+++ b/lib/spack/spack/util/filesystem.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -97,5 +97,3 @@ def stem(path):
 def can_access(file_name):
     """True if we have read/write access to the file."""
     return os.access(file_name, os.R_OK|os.W_OK)
-
-
diff --git a/lib/spack/spack/util/lang.py b/lib/spack/spack/util/lang.py
index eb0528bc98..ba774325c8 100644
--- a/lib/spack/spack/util/lang.py
+++ b/lib/spack/spack/util/lang.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/none_high.py b/lib/spack/spack/util/none_high.py
index bbd7a02773..78b41cbaf6 100644
--- a/lib/spack/spack/util/none_high.py
+++ b/lib/spack/spack/util/none_high.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/none_low.py b/lib/spack/spack/util/none_low.py
index e65b97d867..307bcc8a26 100644
--- a/lib/spack/spack/util/none_low.py
+++ b/lib/spack/spack/util/none_low.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/prefix.py b/lib/spack/spack/util/prefix.py
index 32833a3c04..50347a28f7 100644
--- a/lib/spack/spack/util/prefix.py
+++ b/lib/spack/spack/util/prefix.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/string.py b/lib/spack/spack/util/string.py
index df9c32857e..e7a9a6862e 100644
--- a/lib/spack/spack/util/string.py
+++ b/lib/spack/spack/util/string.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/util/web.py b/lib/spack/spack/util/web.py
index 7b46fc3361..db021cc884 100644
--- a/lib/spack/spack/util/web.py
+++ b/lib/spack/spack/util/web.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/validate.py b/lib/spack/spack/validate.py
index 39410f8cf0..791e26a2d7 100644
--- a/lib/spack/spack/validate.py
+++ b/lib/spack/spack/validate.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
diff --git a/lib/spack/spack/version.py b/lib/spack/spack/version.py
index 3ccef19e4e..a99a5a7b4d 100644
--- a/lib/spack/spack/version.py
+++ b/lib/spack/spack/version.py
@@ -1,23 +1,23 @@
 ##############################################################################
 # Copyright (c) 2013, Lawrence Livermore National Security, LLC.
 # Produced at the Lawrence Livermore National Laboratory.
-# 
+#
 # This file is part of Spack.
 # Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
 # LLNL-CODE-647188
-# 
+#
 # For details, see https://scalability-llnl.github.io/spack
 # Please also see the LICENSE file for our notice and the LGPL.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License (as published by
 # the Free Software Foundation) version 2.1 dated February 1999.
-# 
+#
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
 # conditions of the GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA