diff --git a/pkgs/by-name/ca/cargo-gra/package.nix b/pkgs/by-name/ca/cargo-gra/package.nix
new file mode 100644
index 0000000000000..88e5646e5d618
--- /dev/null
+++ b/pkgs/by-name/ca/cargo-gra/package.nix
@@ -0,0 +1,25 @@
+{
+  rustPlatform,
+  fetchCrate,
+  lib,
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "cargo-gra";
+  version = "0.6.0";
+
+  src = fetchCrate {
+    inherit pname version;
+    hash = "sha256-cli7qaIVYvoZpDml/QAxm2vjvh/g28zlDSpU9IIUBfw=";
+  };
+
+  cargoHash = "sha256-xsaavcpDaiDDbL3Dl+7NLcfB5U6vuYsVPoIuA/KXCvI=";
+
+  meta = {
+    license = lib.licenses.gpl3Plus;
+    homepage = "https://gitlab.com/floers/gtk-stuff/cargo-gra/";
+    maintainers = with lib.maintainers; [ bot-wxt1221 ];
+    platforms = lib.platforms.unix;
+    description = "gtk-rust-app cli for building flatpak apps with ease";
+  };
+}
diff --git a/pkgs/applications/office/karlender/default.nix b/pkgs/by-name/ka/karlender/package.nix
similarity index 51%
rename from pkgs/applications/office/karlender/default.nix
rename to pkgs/by-name/ka/karlender/package.nix
index db3e5c6876d9c..f908979a70234 100644
--- a/pkgs/applications/office/karlender/default.nix
+++ b/pkgs/by-name/ka/karlender/package.nix
@@ -1,48 +1,71 @@
-{ lib
-, rustPlatform
-, fetchFromGitLab
-, pkg-config
-, gtk4
-, libadwaita
-, wrapGAppsHook4
-, glib
-, tzdata
+{
+  lib,
+  rustPlatform,
+  fetchFromGitLab,
+  pkg-config,
+  gtk4,
+  libadwaita,
+  wrapGAppsHook4,
+  glib,
+  tzdata,
+  nix-update-script,
+  dbus,
+  cargo-gra,
+  fetchpatch,
 }:
 
 rustPlatform.buildRustPackage rec {
   pname = "karlender";
-  version = "0.9.2";
+  version = "0.10.4";
 
   src = fetchFromGitLab {
     owner = "floers";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-txPMOWwxgs9PH1Scnwr/X4cuMIUa+eoLW3K2aqmqRMQ=";
+    hash = "sha256-W+s1RCPwy7ZiK514AaQLwV9y+VJ58oMGlrS5cdoFKIg=";
   };
 
-  cargoHash = "sha256-OyyzzkoYBed2XFCesj3QBodT9e/BaapGl/z0f6+cDZA=";
+  cargoPatches = [
+    # https://gitlab.com/floers/calendar-stuff/karlender/-/merge_requests/43
+    # Remove it when it is merged and released.
+    (fetchpatch {
+      url = "https://gitlab.com/floers/calendar-stuff/karlender/-/commit/ce50c68323a834a0ee2cbff88ed285a971dfd91e.patch";
+      hash = "sha256-0hGgJPwnSNGTO/eiooQkQlBJ4brbaWVKRY6MT1PZApg=";
+    })
+  ];
+
+  cargoHash = "sha256-CeHIx6oUtAcr6tBdqmIDTLuYcesaA6G72L3HwHDLY7Y=";
 
   nativeBuildInputs = [
     pkg-config
     wrapGAppsHook4
     glib
+    cargo-gra
   ];
 
   buildInputs = [
     gtk4
     libadwaita
+    dbus
+  ];
+
+  checkFlags = [
+    "--skip domain::time::tests::test_get_correct_offset_for_dst" # Need time
   ];
 
+  preBuild = ''
+    cargo-gra gen
+  '';
+
   postPatch = ''
-    substituteInPlace src/domain/time.rs --replace "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
-    substituteInPlace build.rs --replace "// gra::build" "gra::build"
+    substituteInPlace src/domain/time.rs --replace-fail "/usr/share/zoneinfo" "${tzdata}/share/zoneinfo"
   '';
 
   postInstall = ''
     substituteInPlace target/gra-gen/data/codes.loers.Karlender.desktop \
-      --replace "Exec=codes.loers.Karlender" "Exec=karlender"
+      --replace-fail "Exec=codes.loers.Karlender" "Exec=karlender"
     substituteInPlace target/gra-gen/data/codes.loers.Karlender.appdata.xml \
-      --replace "<binary>codes.loers.Karlender</binary>" "<binary>karlender</binary>"
+      --replace-fail "<binary>codes.loers.Karlender</binary>" "<binary>karlender</binary>"
     install -Dm444 target/gra-gen/codes.loers.Karlender.gschema.xml -t $out/share/gsettings-schemas/$name/glib-2.0/schemas/
     glib-compile-schemas $out/share/gsettings-schemas/$name/glib-2.0/schemas/
     install -Dm444 target/gra-gen/data/codes.loers.Karlender.svg -t $out/share/icons/hicolor/scalable/apps/
@@ -52,12 +75,17 @@ rustPlatform.buildRustPackage rec {
     install -Dm444 target/gra-gen/data/codes.loers.Karlender.appdata.xml -t $out/share/metainfo/
   '';
 
-  meta = with lib; {
+  passthru.updateScript = nix-update-script { };
+
+  meta = {
     description = "Mobile-friendly GTK calendar application";
     mainProgram = "karlender";
     homepage = "https://gitlab.com/floers/karlender";
-    license = licenses.gpl3Plus;
-    maintainers = with maintainers; [ chuangzhu ];
-    platforms = platforms.linux;
+    license = lib.licenses.gpl3Plus;
+    maintainers = with lib.maintainers; [
+      chuangzhu
+      bot-wxt1221
+    ];
+    platforms = lib.platforms.linux;
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f32f5a321df01..a51779c8d943d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -28742,8 +28742,6 @@ with pkgs;
     avahi = avahi.override { withLibdnssdCompat = true; };
   };
 
-  karlender = callPackage ../applications/office/karlender { };
-
   keepassxc = libsForQt5.callPackage ../applications/misc/keepassxc {
     inherit (darwin.apple_sdk_11_0.frameworks) LocalAuthentication;
     stdenv = if stdenv.hostPlatform.isDarwin then darwin.apple_sdk_11_0.stdenv else stdenv;