l 2 games: add doom{1,2} wrappers

lass/2configs/games.nix

@@ -2,10 +2,28 @@
 
 let
   mainUser = config.users.extraUsers.mainUser;
+  doom = pkgs.writeDash "doom" ''
+    DOOM_DIR=''${DOOM_DIR:-~/doom/}
+    ${pkgs.zandronum}/bin/zandronum \
+      -file $DOOM_DIR/lib/brutalv20.pk3 \
+      -file $DOOM_DIR/lib/RebotStarcraftMarines.pk3 \
+      -fov 120 \
+      "$@"
+  '';
+  doom1 = pkgs.writeDashBin "doom1" ''
+    DOOM_DIR=''${DOOM_DIR:-~/doom/}
+    ${doom} -iwad $DOOM_DIR/wads/stock/doom.wad "$@"
+  '';
+  doom2 = pkgs.writeDashBin "doom2" ''
+    DOOM_DIR=''${DOOM_DIR:-~/doom/}
+    ${doom} -iwad $DOOM_DIR/wads/stock/doom2.wad "$@"
+  '';
 
 in {
   environment.systemPackages = with pkgs; [
     dwarf_fortress
+    doom1
+    doom2
   ];
 
   users.extraUsers = {