Make conda’s package directories configurable

[jezdez]

This adds the ability to use D: instead of C: on GitHub hosted Windows runners, to increase the speed of decompression.

See conda/conda-build#5082 (comment) for more information.

[goanpeca]

Thanks for this work @jezdez !

Left a couple of minor comments 🚀

[jezdez]

@conda-incubator/setup-miniconda any takers for another review?

[jaimergp]

Code looks good!

Are there any issues with cross-drive hardlinking? I think Windows doesn't like creating those junctions over different units (or if the underlying drive is different), so maybe this is ends up becoming a performance hit if the env is not in the same drive.

So, I wonder if:

• Should we also allow setting envs-dirs so users can request that new environments are created in the same drive?
• What about the default path for the installation when conda is bootstrapped from Miniconda or Miniforge installers? Should that also be configurable so we can have everything in the same drive?

[jezdez]

@jaimergp I don't have answers for this at the moment

[jezdez]

I don't know why npm is adding all that cruft to dist/delete/index.js :(

[dbast]

I don't know why npm is adding all that cruft to dist/delete/index.js :(

Afaik the reason is: every new function used from a dependency is copied into the index.js (npm run build = ncc = Compile a Node.js project into a single file)