Kelly (KT) Thompson 689e0cb24b Git's gitk needs TK's wish to be found in PATH (#8360) ... * Git's gitk needs TK's wish to be found in PATH * Add a _runtime_ dependency on `tk` * Add an environment rule to add the path to TK's `wish` program to $PATH for the generated `git` modulefile. * Make TclTk run environment an optional variant for git. * Cleanup based on PR recommendations.		2018-06-09 16:16:35 -05:00
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spack	Git's gitk needs TK's wish to be found in PATH (#8360)	2018-06-09 16:16:35 -05:00