x16: move from commanderx16

Now they live under x16 attribute.
Since the old names are easier to use and remember, they should be kept as
non-removable aliases.

pkgs/by-name/x1/x16/package.nix

@@ -2,6 +2,7 @@
 , stdenv
 , fetchFromGitHub
 , SDL2
+, callPackage
 , zlib
 }:
 
@@ -41,6 +42,11 @@ stdenv.mkDerivation (finalAttrs: {
     # upstream project recommends emulator and rom to be synchronized; passing
     # through the version is useful to ensure this
     inherit (finalAttrs) version;
+    emulator = finalAttrs.finalPackage;
+    rom = callPackage ./rom.nix { };
+    run = (callPackage ./run.nix { }){
+      inherit (finalAttrs.finalPackage) emulator rom;
+    };
   };
 
   meta = {

pkgs/by-name/x1/x16/run.nix

@@ -35,3 +35,4 @@ symlinkJoin {
 # 1. Parse the command line in order to allow the user to set an optional
 # rom-file
 # 2. generate runScript based on symlinkJoin (maybe a postBuild?)
+# 3. a NixOS module to abstract the runner

pkgs/top-level/all-packages.nix

@@ -2956,14 +2956,10 @@ with pkgs;
     branch = "early-access";
   };
 
-  ### APPLICATIONS/EMULATORS/COMMANDERX16
-
-  x16-emulator = callPackage ../applications/emulators/commanderx16/emulator.nix { };
-  x16-rom = callPackage ../applications/emulators/commanderx16/rom.nix { };
-  x16-run = (callPackage ../applications/emulators/commanderx16/run.nix { }) {
-    emulator = x16-emulator;
-    rom = x16-rom;
-  };
+  # Aliases kept here because they are easier to use
+  x16-emulator = x16.emulator;
+  x16-rom = x16.rom;
+  x16-run = x16.run;
 
   yabause = libsForQt5.callPackage ../applications/emulators/yabause {
     freeglut = null;