conda caching does not seem to be working for macos-13

[bhaller]

Hi @petrelharp. You can see that building on macos-13 is not working. GitHub recently deactivated/removed macos-11; it's time to get macos-13 working (which it never has). An example of the failure can be seen here:

https://github.com/MesserLab/SLiM/actions/runs/9931045744/job/27430479498

The problem is with conda; you can see the error:

/Users/runner/.profile: line 22: conda: command not found

(Just above that there is a "TODO", by you I think, that might also be relevant.) This error is mystifying to me, though, because earlier in the log are the steps for "Cache conda and dependencies" and "Install conda". The log says "Cache restored successfully", and it seems to think it succeeded. So why can't it find conda later on? And why does this problem only manifest on macos-13, not macos-12?

This kind of thing mystifies me. Since you put the conda caching stuff in, and perhaps understand it, can you please fix this problem? Thankyouthankyouthankyou.

[bhaller]

Hey, for some reason I can assign issues to you now! Woot!

[bhaller]

If it makes the design/maintenance of this conda stuff simpler, I wonder: is it really worth using this cache mechanism? A GitHub admin claimed, in a thread I was reading to try to orient myself on this problem, that installing conda takes ~20 seconds (miniconda, in particular, I guess; not sure whether that suffices for our purposes). That is not huge; maybe if the caching is giving us difficulties it isn't worth it? But I leave that up to you. :->

[bhaller]

This got fixed by @currocam in #457, closing.