gnomeExtensions.lunar-calendar: fix usability (#352896)

pkgs/desktops/gnome/extensions/extensionOverrides.nix

@@ -1,5 +1,7 @@
 { lib
+, fetchFromGitLab
 , fetchzip
+, cpio
 , ddcutil
 , easyeffects
 , gjs
@@ -18,6 +20,8 @@
 , procps
 , smartmontools
 , replaceVars
+, stdenvNoCC
+, substituteAll
 , touchegg
 , util-linux
 , vte
@@ -110,6 +114,35 @@ super: lib.trivial.pipe super [
     ];
   }))
 
+  (patchExtension "lunarcal@ailin.nemui" (old: let
+    chinese-calendar = stdenvNoCC.mkDerivation (finalAttrs: {
+      pname = "chinese-calendar";
+      version = "20240107";
+      nativeBuildInputs = [
+        cpio # used in install.sh
+      ];
+      src = fetchFromGitLab {
+        domain = "gitlab.gnome.org";
+        owner = "Nei";
+        repo = "ChineseCalendar";
+        tag = finalAttrs.version;
+        hash = "sha256-z8Af9e70bn3ztUZteIEt/b3nJIFosbnoy8mwKMM6Dmc=";
+      };
+      installPhase = ''
+        runHook preInstall
+        HOME=$out ./install.sh
+        runHook postInstall
+      '';
+    });
+  in {
+    patches = [
+      (substituteAll {
+        src = ./extensionOverridesPatches/lunarcal_at_ailin.nemui.patch;
+        chinese_calendar_path = chinese-calendar;
+      })
+    ];
+  }))
+
   (patchExtension "pano@elhan.io" (final: prev: {
     version = "v23-alpha3";
     src = fetchzip {

pkgs/desktops/gnome/extensions/extensionOverridesPatches/lunarcal_at_ailin.nemui.patch

@@ -0,0 +1,31 @@
+diff --git a/backend/ytliu0-loader.js b/backend/ytliu0-loader.js
+index 4862c17..25fe9e8 100644
+--- a/backend/ytliu0-loader.js
++++ b/backend/ytliu0-loader.js
+@@ -8,7 +8,11 @@ import GLib from 'gi://GLib'
+ // Code from gnome-shell 44 : extenstionUtils.js:installImporter
+ let custom_importer
+ const origSearchPath = imports.searchPath.slice()
+-imports.searchPath = [GLib.get_user_data_dir(), ...GLib.get_system_data_dirs()]
++imports.searchPath = [
++  GLib.get_user_data_dir(),
++  ...GLib.get_system_data_dirs(),
++  '@chinese_calendar_path@/.local/share'
++]
+ try {
+   // importing a "subdir" creates a new importer object that doesn't affect
+   // the global one
+diff --git a/backend/ytliu0.js b/backend/ytliu0.js
+index 94abd2c..df6241b 100644
+--- a/backend/ytliu0.js
++++ b/backend/ytliu0.js
+@@ -60,7 +60,8 @@ class LunarDateX {
+       const [ok, file] = this._holidayData.load_from_dirs(holiday_fn, [
+         GLib.get_user_config_dir(),
+         GLib.get_user_data_dir(),
+-        ...GLib.get_system_data_dirs()
++        ...GLib.get_system_data_dirs(),
++        '@chinese_calendar_path@/.config'
+       ], GLib.KeyFileFlags.KEEP_TRANSLATIONS)
+       if (this._notifyHoliday)
+         this._notifyHoliday()