Awesome
asdf-protonge 
Unofficial asdf plugin for GloriousEggroll custom Proton distribution.
Installation
Install asdf-vm and add this
repo as a plugin:
asdf plugin-add protonge https://github.com/augustobmoura/asdf-protonge.git
Configuration
Configuration of the plugin is done by environment variables, you can set them
by default in the rc file of your shell of preference (.bashrc, .zshrc,
.profile, etc.).
| Variable | Description |
|---|---|
| ASDF_PROTONGE_STEAM_COMPAT_DIR | directory in which the custom protons will be installed. Defaults to ~/.steam/root/compatibilitytools.d |
| GITHUB_API_TOKEN | GH token used for downloading the tarballs. This is useful because Github tends to rate limit API calls |
How it works
We are basically doing the instructions for manual installation:
we download the version from GitHub, validate the checksum, and extract it on
~/.steam/root/compatibilitytools.d by default, you can customize the
extraction location by setting the ASDF_PROTONGE_STEAM_COMPAT_DIR environment
variable (if you are using flatpak's steam for example, you can set it to
~/.var/app/com.valvesoftware.Steam/data/Steam/compatibilitytools.d/ on your
regular rc file).
We manage installed versions by symlinking the extracted directory to
$ASDF_DIR/installs/protonge/$version, that way we can prevent double
installations and effectively run:
asdf uninstall protonge $version.
If you already have custom installations in your ~/.steam/root/compatibilitytools.d
directory you can manage with asdf-protonge by running the special command:
asdf protonge manage $version
To add all local versions to asdf you can run the script:
ls ~/.steam/root/compatibilitytools.d | xargs asdf protonge manage