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-rw-r--r--var/spack/repos/builtin/packages/tcl/package.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/var/spack/repos/builtin/packages/tcl/package.py b/var/spack/repos/builtin/packages/tcl/package.py
index b1ddc5a141..15891af2e1 100644
--- a/var/spack/repos/builtin/packages/tcl/package.py
+++ b/var/spack/repos/builtin/packages/tcl/package.py
@@ -24,6 +24,7 @@
##############################################################################
import os
+from spack.util.environment import is_system_path
from spack import *
@@ -102,7 +103,9 @@ class Tcl(AutotoolsPackage):
# where a system provided tcl is run against the standard libraries
# of a Spack built tcl. See issue #7128 that relates to python but
# it boils down to the same situation we have here.
- spack_env.prepend_path('PATH', os.path.dirname(self.command.path))
+ path = os.path.dirname(self.command.path)
+ if not is_system_path(path):
+ spack_env.prepend_path('PATH', path)
tcl_paths = [join_path(self.prefix, self.tcl_builtin_lib_dir)]