Commit 69f37ce6 authored by Chuang Zhu's avatar Chuang Zhu
Browse files

nixos/environment: make {sessionV,v}ariables items nullable

parent 4aa36568

nixos/modules/config/shells-environment.nix

+6 −2
Original line number Diff line number Diff line
@@ -34,14 +34,18 @@ in 
      description = ''

        A set of environment variables used in the global environment.

        These variables will be set on shell initialisation (e.g. in /etc/profile).



        The value of each variable can be either a string or a list of

        strings.  The latter is concatenated, interspersed with colon

        characters.



        Setting a variable to `null` does nothing. You can override a

        variable set by another module to `null` to unset it.

      '';

      type = with lib.types; attrsOf (oneOf [ (listOf (oneOf [ int str path ])) int str path ]);

      type = with lib.types; attrsOf (nullOr (oneOf [ (listOf (oneOf [ int str path ])) int str path ]));

      apply = let

        toStr = v: if lib.isPath v then "${v}" else toString v;

      in lib.mapAttrs (n: v: if lib.isList v then lib.concatMapStringsSep ":" toStr v else toStr v);

      in attrs: lib.mapAttrs (n: v: if lib.isList v then lib.concatMapStringsSep ":" toStr v else toStr v) (lib.filterAttrs (n: v: v != null) attrs);

    };



    environment.profiles = lib.mkOption {

nixos/modules/config/system-environment.nix

+3 −0
Original line number Diff line number Diff line
@@ -21,6 +21,9 @@ in 
        list of strings. The latter is concatenated, interspersed with

        colon characters.



        Setting a variable to `null` does nothing. You can override a

        variable set by another module to `null` to unset it.



        Note, due to limitations in the PAM format values may not

        contain the `"` character.

nixos/tests/env.nix

+10 −2
Original line number Diff line number Diff line
@@ -4,7 +4,7 @@ import ./make-test-python.nix ({ pkgs, ...} : { 
    maintainers = [ nequissimus ];

  };



  nodes.machine = { pkgs, ... }:

  nodes.machine = { pkgs, lib, ... }: lib.mkMerge [

    {

      boot.kernelPackages = pkgs.linuxPackages;

      environment.etc.plainFile.text = ''
@@ -17,8 +17,15 @@ import ./make-test-python.nix ({ pkgs, ...} : { 
      environment.sessionVariables = {

        TERMINFO_DIRS = "/run/current-system/sw/share/terminfo";

        NIXCON = "awesome";

        SHOULD_NOT_BE_SET = "oops";

      };

    }

    {

      environment.sessionVariables = {

        SHOULD_NOT_BE_SET = lib.mkForce null;

      };

    }

  ];



  testScript = ''

    machine.succeed('[ -L "/etc/plainFile" ]')
@@ -32,5 +39,6 @@ import ./make-test-python.nix ({ pkgs, ...} : { 
        "echo ''${TERMINFO_DIRS}"

    )

    assert "awesome" in machine.succeed("echo ''${NIXCON}")

    machine.fail("printenv SHOULD_NOT_BE_SET")

  '';

})