The current tcl-tk-8.33.ebuild is slightly broken. It does not install the
private headers that are needed for tcl-tk apps to compile against. For example
this is why tcl scripting is broken in the vim-6.0 ebuild. Also separate ebuilds
for tcl and tk would be nice as it makes it easy to make ebuilds with tcl
dependencies with out pulling in X at the same time.
I am submitting ebuilds in that correct this bug.