:PROPERTIES:
:ID:       3c67e623-c269-4c9b-9bdf-4ad677d46a35
:END:
#+title: systemd environment directives
#+date: 2021-08-07 19:58:29 +08:00
#+date_modified: 2021-08-07 19:59:45 +08:00
#+language: en


systemd enables setting the environment through environment directives.

Just like how [[id:c7edff80-6dea-47fc-8ecd-e43b5ab8fb1e][systemd at user-level]], you can set it at user-level by placing them in certain user-level load paths (e.g., =$XDG_CONFIG_HOME/environment.d=).

It needs a =*.conf= file in one of the load paths (seen from the =environment.d.5= manual page).
Keep in mind it does not use the shell and instead makes use of shell-like syntax.

The following code block is an example of setting Nix-related environment variables to enable desktop integrations.

#+begin_src ini
# Enable desktop integration with Nix-installed applications.
NIX_PATH=$HOME/.nix-defexpr/channels${NIX_PATH:+:}$NIX_PATH
PATH=${PATH:+$PATH:}$HOME/.nix-profile/bin
XDG_DATA_DIRS=${XDG_DATA_DIRS:+$XDG_DATA_DIRS:}$HOME/.nix-profile/share/
#+end_src