wrapper-manager/dconf: add env-wide dconf options

modules/wrapper-manager/dconf.nix

@@ -8,9 +8,11 @@
 # upstream and it may be here for the rest of time.
 #
 # In other words, dconf is just not built for this case.
-{ lib, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 let
+  cfg = config.dconf;
+
   settingsFormat = {
     type = with lib.types;
       let
@@ -29,8 +31,72 @@ let
     generate = name: value:
       pkgs.writeTextDir "/dconf/${name}" (lib.generators.toDconfINI value);
   };
+
+  dconfModuleFactory = { isGlobal ? false }: {
+    enable = lib.mkEnableOption "configuration with dconf" // lib.optionalAttrs (!isGlobal) {
+      default = cfg.enable;
+    };
+
+    package = lib.mkPackageOption pkgs "dconf" { } // lib.optionalAttrs (!isGlobal) {
+      default = cfg.package;
+    };
+
+    settings = lib.mkOption {
+      type = settingsFormat.type;
+      default = { };
+      description = if isGlobal then ''
+        Global settings to be applied per dconf-enabled wrapper.
+      '' else ''
+        The settings of the dconf database that the wrapper uses.
+      '';
+      example = lib.literalExpression ''
+        {
+          "org/gnome/nautilus/list-view".use-tree-view = true;
+          "org/gnome/nautilus/preferences".show-create-link = true;
+          "org/gtk/settings/file-chooser" = {
+            sort-directories-first = true;
+            show-hidden = true;
+          };
+        }
+      '';
+    };
+
+    keyfiles = lib.mkOption {
+      type = with lib.types; listOf path;
+      description = if isGlobal then ''
+        Global list of keyfiles to be included to each dconf-enabled wrapper.
+      '' else ''
+        Additional list of keyfiles to be included as part of the dconf
+        database.
+      '';
+      default = if isGlobal then [ ] else [ "user-db" ];
+      example = lib.literalExpression ''
+        [
+          ./config/dconf/90-extra-settings.conf
+        ]
+      '';
+    };
+
+    profile = lib.mkOption {
+      type = with lib.types; listOf str;
+      description = if isGlobal then ''
+        Global list of dconf database that will be used for each dconf-enabled
+        wrappers.
+      '' else ''
+        A list of dconf databases that will be used for the main dconf
+        profile of the dconf-configured wrapper.
+      '';
+      default = [ "user-db:user" ];
+      defaultText = ''
+        "user-db:user" as the writeable database alongside the generated
+        database file from our settings.
+      '';
+    };
+  };
 in
 {
+  options.dconf = dconfModuleFactory { isGlobal = true; };
+
   options.wrappers =
     let
       dconfSubmodule = { config, lib, name, ... }: let
@@ -56,56 +122,7 @@ in
             dconf compile ${builtins.placeholder "out"} "${keyfilesDir}"
           '';
       in {
-        options.dconf = {
+        options.dconf = dconfModuleFactory { isGlobal = false; } // {
-          enable = lib.mkEnableOption "configuration with dconf";
-
-          package = lib.mkPackageOption pkgs "dconf" { };
-
-          settings = lib.mkOption {
-            type = settingsFormat.type;
-            default = { };
-            description = ''
-              The settings of the dconf database that the wrapper uses.
-            '';
-            example = lib.literalExpression ''
-              {
-                "org/gnome/nautilus/list-view".use-tree-view = true;
-                "org/gnome/nautilus/preferences".show-create-link = true;
-                "org/gtk/settings/file-chooser" = {
-                  sort-directories-first = true;
-                  show-hidden = true;
-                };
-              }
-            '';
-          };
-
-          keyfiles = lib.mkOption {
-            type = with lib.types; listOf path;
-            description = ''
-              Additional list of keyfiles to be included as part of the dconf
-              database.
-            '';
-            default = [ ];
-            example = lib.literalExpression ''
-              [
-                ./config/dconf/90-extra-settings.conf
-              ]
-            '';
-          };
-
-          profile = lib.mkOption {
-            type = with lib.types; listOf str;
-            description = ''
-              A list of dconf databases that will be used for the main dconf
-              profile of the dconf-configured wrapper.
-            '';
-            default = [ "user-db:user" "file-db:${dconfSettingsDatabase}" ];
-            defaultText = ''
-              "user-db:user" as the writeable database alongside the generated
-              database file from our settings.
-            '';
-          };
-
           databaseDrv = lib.mkOption {
             type = lib.types.package;
             description = ''
@@ -118,7 +135,17 @@ in
 
         config = lib.mkIf submoduleCfg.enable {
           env.DCONF_PROFILE.value = dconfProfileFile;
-          dconf.databaseDrv = dconfSettingsDatabase;
+
+          dconf = {
+            profile = lib.mkMerge [
+              cfg.profile
+
+              (lib.mkAfter [ (builtins.toString submoduleCfg.databaseDrv) ])
+            ];
+            keyfiles = cfg.keyfiles;
+            settings = cfg.settings;
+            databaseDrv = dconfSettingsDatabase;
+          };
         };
       };
     in