zed-editor: option to generate immutable settings

modules/programs/zed-editor.nix

@@ -54,6 +54,33 @@ in
         description = "Extra packages available to Zed.";
       };
 
+      mutableUserSettings = mkOption {
+        type = types.bool;
+        default = true;
+        example = false;
+        description = ''
+          Whether user settings (settings.json) can be updated by zed.
+        '';
+      };
+
+      mutableUserKeymaps = mkOption {
+        type = types.bool;
+        default = true;
+        example = false;
+        description = ''
+          Whether user keymaps (keymap.json) can be updated by zed.
+        '';
+      };
+
+      mutableUserTasks = mkOption {
+        type = types.bool;
+        default = true;
+        example = false;
+        description = ''
+          Whether user tasks (tasks.json) can be updated by zed.
+        '';
+      };
+
       userSettings = mkOption {
         type = jsonFormat.type;
         default = { };
@@ -191,14 +218,14 @@ in
     );
 
     home.activation = mkMerge [
-      (mkIf (mergedSettings != { }) {
+      (mkIf (cfg.mutableUserSettings && mergedSettings != { }) {
         zedSettingsActivation = lib.hm.dag.entryAfter [ "linkGeneration" ] (
           impureConfigMerger "{}" "$dynamic * $static" "${config.xdg.configHome}/zed/settings.json" (
             jsonFormat.generate "zed-user-settings" mergedSettings
           )
         );
       })
-      (mkIf (cfg.userKeymaps != [ ]) {
+      (mkIf (cfg.mutableUserKeymaps && cfg.userKeymaps != [ ]) {
         zedKeymapActivation = lib.hm.dag.entryAfter [ "linkGeneration" ] (
           impureConfigMerger "[]"
             "$dynamic + $static | group_by(.context) | map(reduce .[] as $item ({}; . * $item))"
@@ -206,7 +233,7 @@ in
             (jsonFormat.generate "zed-user-keymaps" cfg.userKeymaps)
         );
       })
-      (mkIf (cfg.userTasks != [ ]) {
+      (mkIf (cfg.mutableUserTasks && cfg.userTasks != [ ]) {
         zedTasksActivation = lib.hm.dag.entryAfter [ "linkGeneration" ] (
           impureConfigMerger "[]"
             "$dynamic + $static | group_by(.label) | map(reduce .[] as $item ({}; . * $item))"
@@ -216,18 +243,29 @@ in
       })
     ];
 
-    xdg.configFile = lib.mapAttrs' (
-      n: v:
-      lib.nameValuePair "zed/themes/${n}.json" {
-        source =
-          if lib.isString v then
-            pkgs.writeText "zed-theme-${n}" v
-          else if builtins.isPath v || lib.isStorePath v then
-            v
-          else
-            jsonFormat.generate "zed-theme-${n}" v;
-      }
-    ) cfg.themes;
+    xdg.configFile = mkMerge [
+      (lib.mapAttrs' (
+        n: v:
+        lib.nameValuePair "zed/themes/${n}.json" {
+          source =
+            if lib.isString v then
+              pkgs.writeText "zed-theme-${n}" v
+            else if builtins.isPath v || lib.isStorePath v then
+              v
+            else
+              jsonFormat.generate "zed-theme-${n}" v;
+        }
+      ) cfg.themes)
+      (mkIf (!cfg.mutableUserSettings && mergedSettings != { }) {
+        "zed/settings.json".source = jsonFormat.generate "zed-user-settings" mergedSettings;
+      })
+      (mkIf (!cfg.mutableUserKeymaps && cfg.userKeymaps != { }) {
+        "zed/keymap.json".source = jsonFormat.generate "zed-user-keymaps" cfg.userKeymaps;
+      })
+      (mkIf (!cfg.mutableUserTasks && cfg.userTasks != [ ]) {
+        "zed/tasks.json".source = jsonFormat.generate "zed-user-tasks" cfg.userTasks;
+      })
+    ];
 
     assertions = [
       {

tests/modules/programs/zed-editor/default.nix

@@ -1,11 +1,15 @@
 {
   zed-extensions = ./extensions.nix;
+  zed-extensions-immutable = ./extensions-immutable.nix;
   zed-install-remote-server = ./install-remote-server.nix;
   zed-keymap = ./keymap.nix;
+  zed-keymap-immutable = ./keymap-immutable.nix;
   zed-keymap-empty = ./keymap-empty.nix;
   zed-settings = ./settings.nix;
+  zed-settings-immutable = ./settings-immutable.nix;
   zed-settings-empty = ./settings-empty.nix;
   zed-tasks = ./tasks.nix;
+  zed-tasks-immutable = ./tasks-immutable.nix;
   zed-tasks-empty = ./tasks-empty.nix;
   zed-themes = ./themes;
 }

tests/modules/programs/zed-editor/extensions-immutable.nix

@@ -0,0 +1,31 @@
+{ config, ... }:
+
+{
+  programs.zed-editor = {
+    enable = true;
+    package = config.lib.test.mkStubPackage { };
+    mutableUserSettings = false;
+    extensions = [
+      "swift"
+      "html"
+      "xy-zed"
+    ];
+  };
+
+  nmt.script =
+    let
+      expectedContent = builtins.toFile "expected.json" ''
+        {
+          "auto_install_extensions": {
+            "html": true,
+            "swift": true,
+            "xy-zed": true
+          }
+        }
+      '';
+    in
+    ''
+      assertFileExists "home-files/.config/zed/settings.json"
+      assertFileContent "home-files/.config/zed/settings.json" "${expectedContent}"
+    '';
+}

tests/modules/programs/zed-editor/keymap-immutable.nix

@@ -0,0 +1,48 @@
+# Test custom keymap functionality
+{ config, ... }:
+
+{
+  programs.zed-editor = {
+    enable = true;
+    package = config.lib.test.mkStubPackage { };
+    mutableUserKeymaps = false;
+    userKeymaps = [
+      {
+        bindings = {
+          up = "menu::SelectPrev";
+        };
+      }
+      {
+        context = "Editor";
+        bindings = {
+          escape = "editor::Cancel";
+        };
+      }
+    ];
+  };
+
+  nmt.script =
+    let
+      expectedContent = builtins.toFile "expected.json" ''
+        [
+          {
+            "bindings": {
+              "up": "menu::SelectPrev"
+            }
+          },
+          {
+            "bindings": {
+              "escape": "editor::Cancel"
+            },
+            "context": "Editor"
+          }
+        ]
+      '';
+
+      keymapPath = ".config/zed/keymap.json";
+    in
+    ''
+      assertFileExists "home-files/${keymapPath}"
+      assertFileContent "home-files/${keymapPath}" "${expectedContent}"
+    '';
+}

tests/modules/programs/zed-editor/settings-immutable.nix

@@ -0,0 +1,40 @@
+# Test custom keymap functionality
+{ config, ... }:
+
+{
+  programs.zed-editor = {
+    enable = true;
+    package = config.lib.test.mkStubPackage { };
+    mutableUserSettings = false;
+    userSettings = {
+      theme = "XY-Zed";
+      features = {
+        copilot = false;
+      };
+      vim_mode = false;
+      ui_font_size = 16;
+      buffer_font_size = 16;
+    };
+  };
+
+  nmt.script =
+    let
+      expectedContent = builtins.toFile "expected.json" ''
+        {
+          "buffer_font_size": 16,
+          "features": {
+            "copilot": false
+          },
+          "theme": "XY-Zed",
+          "ui_font_size": 16,
+          "vim_mode": false
+        }
+      '';
+
+      settingsPath = ".config/zed/settings.json";
+    in
+    ''
+      assertFileExists "home-files/${settingsPath}"
+      assertFileContent "home-files/${settingsPath}" "${expectedContent}"
+    '';
+}

tests/modules/programs/zed-editor/tasks-immutable.nix

@@ -0,0 +1,44 @@
+# Test custom keymap functionality
+{ config, ... }:
+
+{
+  programs.zed-editor = {
+    enable = true;
+    package = config.lib.test.mkStubPackage { };
+    mutableUserTasks = false;
+    userTasks = [
+      {
+        label = "Format Code";
+        command = "nix";
+        args = [
+          "fmt"
+          "$ZED_WORKTREE_ROOT"
+        ];
+        allow_concurrent_runs = false;
+      }
+    ];
+  };
+
+  nmt.script =
+    let
+      expectedContent = builtins.toFile "expected.json" ''
+        [
+          {
+            "allow_concurrent_runs": false,
+            "args": [
+              "fmt",
+              "$ZED_WORKTREE_ROOT"
+            ],
+            "command": "nix",
+            "label": "Format Code"
+          }
+        ]
+      '';
+
+      settingsPath = ".config/zed/tasks.json";
+    in
+    ''
+      assertFileExists "home-files/${settingsPath}"
+      assertFileContent "home-files/${settingsPath}" "${expectedContent}"
+    '';
+}