Environment variables

Defining environment variables

Environment variables can be set with environment.variables, environment.sessionVariables, and environment.profileRelativeSessionVariables. For example, for the Base Directory Specification, the following could be set to /etc/nixos/configuration.nix:

<syntaxhighlight lang="nix"> {

# ...

 environment.sessionVariables = rec {
   XDG_CACHE_HOME  = "\${HOME}/.cache";
   XDG_CONFIG_HOME = "\${HOME}/.config";
   XDG_BIN_HOME    = "\${HOME}/.local/bin";
   XDG_DATA_HOME   = "\${HOME}/.local/share";

   PATH = [ 
     "\${XDG_BIN_HOME}"
   ];
 };

# ...

}