diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/spack/spack/build_systems/python.py | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/lib/spack/spack/build_systems/python.py b/lib/spack/spack/build_systems/python.py index 904f0dbaa0..7a8650bfce 100644 --- a/lib/spack/spack/build_systems/python.py +++ b/lib/spack/spack/build_systems/python.py @@ -222,7 +222,24 @@ class PythonPackage(PackageBase): def install_args(self, spec, prefix): """Arguments to pass to install.""" - return ['--prefix={0}'.format(prefix)] + args = ['--prefix={0}'.format(prefix)] + + # This option causes python packages (including setuptools) NOT + # to create eggs or easy-install.pth files. Instead, they + # install naturally into $prefix/pythonX.Y/site-packages. + # + # Eggs add an extra level of indirection to sys.path, slowing + # down large HPC runs. They are also deprecated in favor of + # wheels, which use a normal layout when installed. + # + # Spack manages the package directory on its own by symlinking + # extensions into the site-packages directory, so we don't really + # need the .pth files or egg directories, anyway. + if ('py-setuptools' == spec.name or # this is setuptools, or + 'py-setuptools' in spec._dependencies): # it's an immediate dep + args += ['--single-version-externally-managed', '--root=/'] + + return args def install_lib(self, spec, prefix): """Install all Python modules (extensions and pure Python).""" |