Use forth-mode instead emacs forth support included with gforth

flake.lock

@@ -42,11 +42,11 @@
     },
     "emacs-overlay": {
       "locked": {
-        "lastModified": 1638410276,
-        "narHash": "sha256-t0CsOx6BbvPBtpYYHzEpIbmuwv56O6Asxo7rgrFp5pU=",
+        "lastModified": 1638438247,
+        "narHash": "sha256-unPY6/AfTZevP4Jdd+GnjmXQjGB/GT+mCKBsrl2gDLo=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "360f62afb63ddeb8d8d43547266dfd7f2e2d54eb",
+        "rev": "8c7c2f86ce9efef1e02a2710f9f803b029c57b73",
         "type": "github"
       },
       "original": {

modules/base/emacs/default.nix

@@ -19,9 +19,7 @@
         package = pkgs.emacsPgtkGcc;
         alwaysEnsure = true;
         # mu4e is included in the mu package and should be used from there
-        extraEmacsPackages = epkgs:
-          (lib.optional config.chvp.graphical.mail.enable pkgs.mu) ++
-          (lib.optional config.chvp.development.enable pkgs.gforth);
+        extraEmacsPackages = epkgs: lib.optional config.chvp.graphical.mail.enable pkgs.mu;
       };
     };
   };

modules/development/default.nix

@@ -42,9 +42,7 @@
             )
 
           ;; Forth syntax support
-          (use-package gforth
-            ;; Included in the gforth package, see emacs/default.nix
-            :ensure nil
+          (use-package forth-mode
             :mode ("\\.fs\\'" . forth-mode)
             :mode ("\\.fb\\'" . forth-block-mode)
           )