Conda-build path too long when building on Windows

[maresb]

Copying from conda-forge/staged-recipes#26614 (comment):

I seem to be hitting conda/conda-build#5122 when building on Windows, and it doesn't seem to me like there are currently any viable workarounds. Should I just disable Windows for now?

To be specific, during the build process this package depends on the ruff repository, and there are some huge filenames in there that Windows simply chokes on.

Caused by:
  failed to load source for dependency `ruff_python_ast`

Caused by:
  Unable to update https://github.com/astral-sh/ruff?tag=v0.3.4#5062572a

Caused by:
  path too long: 'C:/bld/deptry_1717936673004/_build_env/.cargo/git/checkouts/ruff-194cdb01f61cb8d9/5062572/crates/ruff_linter/src/rules/flake8_quotes/snapshots/ruff_linter__rules__flake8_quotes__tests__require_docstring_doubles_over_docstring_singles_mixed_quotes_class_var_1.py.snap'; class=Filesystem (30)

[maresb]

I think the issue I linked above was not so fitting. Probably better is this metaissue: conda/conda#13575

[maresb]

I attempted to set LongPathsEnabled in #7 as per this but it didn't seem to help.

[maresb]

@fpgmaas, do you have any ideas here?

I think I'm stuck so I posted to Element.

I'm not sure if using crates.io would help? But it doesn't seem to be available due to astral-sh/ruff#10417.

This is really annoying because I'd like to add deptry as a Conda environment requirement, but that would currently make the environment uninstallable for Windows users.

[jaimergp]

Can you symlink that location with a junction and patch the expected location somehow?

[jaimergp]

Or maybe define CARGO_HOME so the cache is written somewhere else, shorter. That path is 267 chars so you only need to remove 7.

set "CARGO_HOME=C:\cargo"

should do it

[maresb]

Amazing, thanks so much @jaimergp!!!

[fpgmaas]

Sorry, a bit late to the party :) Thanks a bunch!