Home-manager and xsession with gdm

[shamrocklee]

I came up with a solution recently that works for LXDE. It would be great to know if it also works on Gnome.

Home Manager xsession for your default graphical shell on NixOS

To make home.sessionVariables available for graphical (GUI) applications, e.g. to make JAVA_HOME visible to the editor extensions, you need to let Home Manager take over the graphical session by setting xsession.enable = true; and either by choosing a Window Manager or to set the xsession.windowManager.command manually. However, standalone Window Managers are not for everyone, and it’s hard to get the right the correct command (at least for me). Here’s a simple hack to steal the command from th…