Introduce a plainmacs emacs install flavor.

nix/configuration/hosts/neelix/default.nix

@@ -28,4 +28,5 @@
 
   me.kodi.enable = true;
   me.bluetooth.enable = true;
+  me.emacs_flavor = "plainmacs";
 }

nix/configuration/hosts/odo/default.nix

@@ -34,4 +34,5 @@
 
   me.sway.enable = true;
   me.ansible.enable = true;
+  me.emacs_flavor = "full";
 }

nix/configuration/roles/emacs/default.nix

@@ -39,69 +39,113 @@ let
   e_shorthand = pkgs.writeShellScriptBin "e" ''
     exec ${pkgs.emacs_full}/bin/emacs "''${@}"
   '';
+  plain_e_shorthand = pkgs.writeShellScriptBin "e" ''
+    exec ${pkgs.emacs29-pgtk}/bin/emacs "''${@}"
+  '';
 in
 {
   imports = [ ];
 
-  config = lib.mkMerge [
+  options.me.emacs_flavor = lib.mkOption {
-    {
+    type = lib.types.nullOr (
-      environment.systemPackages = with pkgs; [
+      lib.types.enum [
-        plainmacs
+        "full"
-        e_shorthand
+        "plainmacs"
-        emacs_full
+      ]
-      ];
+    );
+    default = null;
+    example = "full";
+    description = "What flavor of emacs to set up.";
+  };
 
-      nixpkgs.overlays = [
+  config =
-        (final: prev: {
+    lib.mkIf config.me.emacs_flavor != null (
-          emacs_full = pkgs.symlinkJoin {
+      lib.mkMerge [
-            name = "emacs_full";
+        (lib.mkIf (config.me.emacs_flavor == "full") {
-            paths = [ pkgs.emacs29-pgtk ];
+          environment.systemPackages = with pkgs; [
-            buildInputs = [ pkgs.makeWrapper ];
+            plainmacs
-            postBuild = ''
+            e_shorthand
-              wrapProgram $out/bin/emacs --prefix PATH : ${
+            emacs_full
-                lib.makeBinPath [
+          ];
-                  (pkgs.aspellWithDicts (
+
-                    dicts: with dicts; [
+          nixpkgs.overlays = [
-                      en
+            (final: prev: {
-                      en-computers
+              emacs_full = pkgs.symlinkJoin {
+                name = "emacs_full";
+                paths = [ pkgs.emacs29-pgtk ];
+                buildInputs = [ pkgs.makeWrapper ];
+                postBuild = ''
+                  wrapProgram $out/bin/emacs --prefix PATH : ${
+                    lib.makeBinPath [
+                      (pkgs.aspellWithDicts (
+                        dicts: with dicts; [
+                          en
+                          en-computers
+                        ]
+                      ))
+                      pkgs.nixd # nix language server
+                      pkgs.nixfmt-rfc-style # auto-formatting nix files through nixd
+                      pkgs.clang # To compile tree-sitter grammars
+                      pkgs.shellcheck
                     ]
-                  ))
+                  }
-                  pkgs.nixd # nix language server
+                '';
-                  pkgs.nixfmt-rfc-style # auto-formatting nix files through nixd
+              };
-                  pkgs.clang # To compile tree-sitter grammars
+            })
-                ]
+          ];
-              }
+
-            '';
+          home-manager.users.talexander =
+            { pkgs, ... }:
+            {
+              home.file.".config/emacs" = {
+                source = ./files/emacs;
+                recursive = true;
+              };
+            };
+
+          environment.persistence."/state" = lib.mkIf (!config.me.buildingIso) {
+            hideMounts = true;
+            users.talexander = {
+              directories = [
+                ".config/emacs/eln-cache" # Installed packages
+                ".config/emacs/elpa" # Installed packages
+                ".config/emacs/private" # For recentf
+                ".config/emacs/tree-sitter" # Compiled tree-sitter grammars
+              ];
+              files = [
+                ".config/emacs/history" # For savehist
+                ".config/emacs/.last-package-update-day" # For use-package
+              ];
+            };
           };
+
+          environment.variables.EDITOR = "${plainmacs}/bin/plainmacs";
         })
-      ];
+        (lib.mkIf (config.me.emacs_flavor == "plainmacs") {
+          environment.systemPackages = with pkgs; [
+            emacs29-pgtk
+            plainmacs
+            plain_e_shorthand
+          ];
 
-      home-manager.users.talexander =
+          environment.persistence."/state" = lib.mkIf (!config.me.buildingIso) {
-        { pkgs, ... }:
+            hideMounts = true;
-        {
+            users.talexander = {
-          home.file.".config/emacs" = {
+              directories = [
-            source = ./files/emacs;
+                ".config/emacs/eln-cache" # Installed packages
-            recursive = true;
+                ".config/emacs/elpa" # Installed packages
+                ".config/emacs/private" # For recentf
+                ".config/emacs/tree-sitter" # Compiled tree-sitter grammars
+              ];
+              files = [
+                ".config/emacs/history" # For savehist
+                ".config/emacs/.last-package-update-day" # For use-package
+              ];
+            };
           };
-        };
 
-      environment.persistence."/state" = lib.mkIf (!config.me.buildingIso) {
+          environment.variables.EDITOR = "${plainmacs}/bin/plainmacs";
-        hideMounts = true;
+        })
-        users.talexander = {
+      ]
-          directories = [
+    );
-            ".config/emacs/eln-cache" # Installed packages
-            ".config/emacs/elpa" # Installed packages
-            ".config/emacs/private" # For recentf
-            ".config/emacs/tree-sitter" # Compiled tree-sitter grammars
-          ];
-          files = [
-            ".config/emacs/history" # For savehist
-            ".config/emacs/.last-package-update-day" # For use-package
-          ];
-        };
-      };
-
-      environment.variables.EDITOR = "${plainmacs}/bin/plainmacs";
-    }
-  ];
 }