Environment Variables

This section is related to the development version of protonlaunch and those environment variables aren't available yet on the main release. Check out the protonlaunch faq to see what are the mainstream environment variables.

Protonlaunch comes with some environment variables that allows you to change its properties while running. Most of those property have a proton equivalent that will take precedence over protonlaunch ones for compatibility reasons.

Environment Variable	Description	Default Value	Proton equivalent
PROTONPREFIX	The path of proton prefix that will be used	${HOME}/.proton	STEAM_COMPAT_DATA_PATH
PL_STEAM_PATH	Path to your steam installation, used if your steam is not autodetected	autodetected	STEAM_COMPAT_CLIENT_INSTALL_PATH
PL_LIBRARY_PATH	List of steam library paths separated by comma (:)	autodetected
PL_PROTON_VERSION	Version of proton to be used	autodetected

All this information is also available with protonlaunch --help