yubioath-flutter: slight refactor and cleanup

pkgs/applications/misc/yubioath-flutter/default.nix

@@ -5,20 +5,60 @@
 , stdenv
 , pcre2
 }:
-
 let
   vendorHashes = {
     x86_64-linux = "sha256-BwhWA8N0S55XkljDKPNkDhsj0QSpmJJ5MwEnrPjymS8=";
     aarch64-linux = "sha256-T1aGz3+2Sls+rkUVDUo39Ky2igg+dxGSUaf3qpV7ovQ=";
   };
-
+in
+flutter.mkFlutterApp rec {
+  pname = "yubioath-flutter";
   version = "6.0.2";
+
   src = fetchFromGitHub {
     owner = "Yubico";
     repo = "yubioath-flutter";
     rev = version;
     sha256 = "13nh5qpq02c6azfdh4cbzhlrq0hs9is45q5z5cnxg84hrx26hd4k";
   };
+
+  passthru.helper = python3.pkgs.callPackage ./helper.nix { inherit src version meta; };
+
+  vendorHash = vendorHashes.${stdenv.system};
+
+  postPatch = ''
+    substituteInPlace linux/CMakeLists.txt \
+      --replace "../build/linux/helper" "${passthru.helper}/libexec/helper"
+  '';
+
+  preInstall = ''
+    # Make sure we have permission to delete things CMake has copied in to our build directory from elsewhere.
+    chmod -R +w build
+  '';
+
+  postInstall = ''
+    # Swap the authenticator-helper symlink with the correct symlink.
+    ln -fs "${passthru.helper}/bin/authenticator-helper" "$out/app/helper/authenticator-helper"
+
+    # Cleanup.
+    rm -rf \
+      "$out/app/README.adoc" \
+      "$out/app/desktop_integration.sh" \
+      "$out/app/linux_support" \
+      $out/bin/* # We will repopulate this directory later.
+
+    # Symlink binary.
+    ln -sf "$out/app/authenticator" "$out/bin/yubioath-flutter"
+
+    # Set the correct path to the binary in desktop file.
+    substituteInPlace "$out/share/applications/com.yubico.authenticator.desktop" \
+      --replace "@EXEC_PATH/authenticator" "$out/bin/yubioath-flutter"
+  '';
+
+  buildInputs = [
+    pcre2
+  ];
+
   meta = with lib; {
     description = "Yubico Authenticator for Desktop";
     homepage = "https://github.com/Yubico/yubioath-flutter";
@@ -26,32 +66,4 @@ let
     maintainers = with maintainers; [ lukegb ];
     platforms = builtins.attrNames vendorHashes;
   };
-
-  helper = python3.pkgs.callPackage ./helper.nix { inherit src version meta; };
-in
-flutter.mkFlutterApp rec {
-  pname = "yubioath-flutter";
-  inherit src version meta;
-
-  passthru.helper = helper;
-
-  vendorHash = vendorHashes."${stdenv.system}";
-
-  postPatch = ''
-    substituteInPlace linux/CMakeLists.txt \
-      --replace "../build/linux/helper" "${helper}/libexec/helper"
-  '';
-
-  preInstall = ''
-    # Make sure we have permission to delete things CMake has copied in to our build directory from elsewhere.
-    chmod -R +w build/
-  '';
-  postInstall = ''
-    # Swap the authenticator-helper symlink with the correct symlink.
-    ln -fs "${helper}/bin/authenticator-helper" "$out/app/helper/authenticator-helper"
-  '';
-
-  buildInputs = [
-    pcre2
-  ];
 }

pkgs/applications/misc/yubioath-flutter/helper.nix

@@ -12,7 +12,7 @@
 , meta
 }:
 
-buildPythonApplication rec {
+buildPythonApplication {
   pname = "yubioath-flutter-helper";
   inherit src version meta;