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-rw-r--r--var/spack/repos/builtin/packages/tk/package.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/tk/package.py b/var/spack/repos/builtin/packages/tk/package.py
index 894d3af6cc..12a7049e72 100644
--- a/var/spack/repos/builtin/packages/tk/package.py
+++ b/var/spack/repos/builtin/packages/tk/package.py
@@ -37,7 +37,10 @@ class Tk(Package):
version('8.6.5', '11dbbd425c3e0201f20d6a51482ce6c4')
version('8.6.3', '85ca4dbf4dcc19777fd456f6ee5d0221')
+ variant('X', default=True, description='Enable X11 support')
+
depends_on("tcl")
+ depends_on("libx11", when='+X')
def url_for_version(self, version):
base_url = "http://prdownloads.sourceforge.net/tcl"