TCL/TK deserve to be better known

Nowadays there's Lmod, which is an improved implementation of the modules system, that happens to be implemented in Lua rather than Tcl. And in yet other HPC style environments, containers are increasingly used as a way to provide each app with whatever crazy combination of libraries it needs rather than needing a module system to provide everything under the sun.

Also, nowadays many HPC admins no longer write their mod/Lmod files manually, but use 'meta build systems' like spack or easybuild that generate module files as part of the build.

That being said, the original Tcl module system was awesome back in the day and was pretty essential in many HPC sites.