support $XDG_CONFIG_HOME on linux

[hyperupcall]

• i have searched the issues of this repo and believe that this is not a duplicate.
• i have searched the documentation and believe that my question is not covered.

feature request

i noticed that $XDG_CONFIG_HOME is supported on mac from this issue, but are there plans for it (or other variables from the xdg base directory specification) to be supported on linux? i ask because poetry still installs to $HOME/.poetry/bin even though i explicitly set $XDG_DATA_HOME. it would be great if configuration files would also be put in $XDG_CONFIG_HOME/poetry

i think it would be great for the behaviour to be consistent as possible between operating systems, especially considering that macos and gnu/linux are both *nix operating systems.

[MestreLion]

$XDG_CONFIG_HOME is meant for configuration files, not software data. Maybe you mean $XDG_DATA_HOME? If so, then yes, I strongly support this request. Poetry should install itself to $XDG_DATA_HOME/poetry (which defaults to ~/.local/share/poetry), and copy (or symlink) its CLI executable to ~/.local/bin.

[hyperupcall]

oops! yeah that's exactly what i meant. lemmie fix that

[finswimmer]

The new install-poetry.py installer script should do this.

[github-actions]

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