Thank you, lb90. A lot of things get stripped in TCL in the interest of keeping things tiny. I think you may have pinpointed the issue.
glib2-locale.tcz is available in the x86 repository, but not in the x86_64 repository. I’m using the 64-bit version of TCL. I’ll ask the developers about adding glib2-locale.tcz to the x86_64 repository.
If they add it, I’ll try installing it then will report back here.