Re: [gentoo-dev] [PATCH 1/3] cargo.eclass: Add cargo_env helper and use it in compile, test, install

[Eli Schwartz <eschwartz@gentoo.org>]

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On 7/24/24 6:07 PM, James Le Cuirot wrote:
> Rust packages have a tendency to rebuild parts during test and install.
> It is not clear whether this can be addressed. We were therefore relying
> on some environment variables set during the compile phase for
> cross-compiling to work in the later phases. This is not ideal,
> especially if you need to build for multiple targets.


Oof, yeah, as I mentioned on Monday in -dev, I have a package that
actually produces meaningfully different programs if you rebuild it
during test.

dev-util/ruff will, when built with FEATURES=test, not show color when
you run it. Don't know why, feel a bit too freaked out about rebuilding
for tests *at all* to even think about fixing this in a "src_test
compatible way".

So I wonder if maybe we can somehow switch to e.g. doing the test phase
in a different directory such that it doesn't modify the artifacts we
actually want to install.


-- 
Eli Schwartz


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