feat(config): XDG_CONFIG_HOME and XDG_CACHE_HOME compliance

[chawyehsu]

Close #1049

[pavelzw]

Can we have similar behavior for $XDG_CACHE_HOME for consistency?

[chawyehsu]

Can we have similar behavior for $XDG_CACHE_HOME for consistency?

good idea!

[anjos]

Related to XDG compliance, I'm assuming that the installer will also respect these defaults?

[anjos]

I'm asking because the documentation for the installation is not really explicit about this: https://pixi.sh/latest/

[ruben-arts]

Could you also update the docs in : https://pixi.sh/latest/advanced/explain_info_command/#cache-dir

[ruben-arts]

He @anjos which installer did you mean? The rattler cache (the underlying installer in pixi) will also use it with this PR. But if you mean the the actual pixi binary this isn't changed by this PR.

[ruben-arts]

Thanks again @chawyehsu

[anjos]

Thanks to both of you!

@ruben-arts: what I meant was what is installed with the command line curl -fsSL https://pixi.sh/install.sh | bash.

[ruben-arts]

Just to verify, you mean that we install into $HOME/.local/bin? Because no we don't do that currently.

[anjos]

I apologise for the confusion - In short, I'm asking if pixi will also respect $XDG_DATA_HOME (typically $HOME/.local/share) for the location of $PIXI_HOME/envs and $PIXI_HOME/bin. In this case, I'd expect that the command-line installation of the standalone pixi binary (curl -fsSL https://pixi.sh/install.sh | bash) should also do that instead of defaulting to $HOME/.pixi.

[chawyehsu]

It's easy to do so since we already support $PIXI_HOME, you can simply set $PIXI_HOME=$XDG_DATA_HOME/pixi and pixi will be installed to the directory as you'd expect.

[anjos]

That is what I'm currently doing, thanks!