Loading module py-gitpython AND py-cylc-uiserver AND py-cylc-rose after update from spack develop as of 2024/01/26 destroys macOS user environment

[climbfuji]

Describe the bug
For PR #977, loading the spack-generated lua modules for py-gitpython (tested versions 3.1.27 and 3.1.40) AND py-cylc-uiserver AND py-cylc-rose destroys the user environment on my macOS (Monterey 12.6.6, [email protected]). Every single command that I type after loading the module immediately crashes with:

dyld[54679]: Assertion failed: (next < &roBuffer[0x10000]), function roalloc, file DyldProcessConfig.cpp, line 653.

This may or may not be related to my older macOS and Xcode versions.

To Reproduce
See above

Expected behavior
No errors when loading large sets of modules.

System:
macOS Monterey 12.6.6, [email protected]

Additional context
See below

[climbfuji]

I figured out the root cause for this: TACC/Lmod#685

[climbfuji]

I've escalated this with the lmod developers and delivered a simple reproducer. We can track the above PR, but for now the simple solution is to install in a short enough path so that the combined length of DYLD_LIBRARY_PATH and DYLD_FALLBACK_LIBRARY_PATH after loading ewok-env (or whatever modules needed) is less than 64k characters.