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-rw-r--r--var/spack/repos/builtin/packages/python/package.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/python/package.py b/var/spack/repos/builtin/packages/python/package.py
index c4e6754969..57783b0542 100644
--- a/var/spack/repos/builtin/packages/python/package.py
+++ b/var/spack/repos/builtin/packages/python/package.py
@@ -133,6 +133,8 @@ class Python(Package):
# TODO: Once better testing support is integrated, add the following tests
# https://wiki.python.org/moin/TkInter
#
+ # Note: Only works if ForwardX11Trusted is enabled, i.e. `ssh -Y`
+ #
# if '+tk' in spec:
# env['TK_LIBRARY'] = join_path(spec['tk'].prefix.lib,
# 'tk{0}'.format(spec['tk'].version.up_to(2)))