diff options
Diffstat (limited to 'nixos/modules/services/x11/desktop-managers/default.nix')
-rw-r--r-- | nixos/modules/services/x11/desktop-managers/default.nix | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/nixos/modules/services/x11/desktop-managers/default.nix b/nixos/modules/services/x11/desktop-managers/default.nix new file mode 100644 index 000000000000..ab3ced4c9e2c --- /dev/null +++ b/nixos/modules/services/x11/desktop-managers/default.nix @@ -0,0 +1,76 @@ +{ config, pkgs, ... }: + +with pkgs.lib; + +let + + xcfg = config.services.xserver; + cfg = xcfg.desktopManager; + + # Whether desktop manager `d' is capable of setting a background. + # If it isn't, the `feh' program is used as a fallback. + needBGCond = d: ! (d ? bgSupport && d.bgSupport); + +in + +{ + # Note: the order in which desktop manager modules are imported here + # determines the default: later modules (if enabled) are preferred. + # E.g., if KDE is enabled, it supersedes xterm. + imports = [ ./none.nix ./xterm.nix ./xfce.nix ./gnome.nix ./kde4.nix ./e17.nix ]; + + options = { + + services.xserver.desktopManager = { + + session = mkOption { + internal = true; + default = []; + example = singleton + { name = "kde"; + bgSupport = true; + start = "..."; + }; + description = '' + Internal option used to add some common line to desktop manager + scripts before forwarding the value to the + <varname>displayManager</varname>. + ''; + apply = list: { + list = map (d: d // { + manage = "desktop"; + start = d.start + + optionalString (needBGCond d) '' + if test -e $HOME/.background-image; then + ${pkgs.feh}/bin/feh --bg-scale $HOME/.background-image + fi + ''; + }) list; + needBGPackages = [] != filter needBGCond list; + }; + }; + + default = mkOption { + type = types.str; + default = ""; + example = "none"; + description = "Default desktop manager loaded if none have been chosen."; + apply = defaultDM: + if defaultDM == "" && cfg.session.list != [] then + (head cfg.session.list).name + else if any (w: w.name == defaultDM) cfg.session.list then + defaultDM + else + throw "Default desktop manager ($(defaultDM)) not found."; + }; + + }; + + }; + + config = { + services.xserver.displayManager.session = cfg.session.list; + environment.systemPackages = + mkIf cfg.session.needBGPackages [ pkgs.feh ]; + }; +} |