firefox-extensions.open-in-mpv: build from source

this ensures that the extension and the native component stay in sync

pkgs/additional/firefox-extensions/default.nix

@@ -116,6 +116,7 @@ in (lib.makeScope newScope (self: with self; {
     browserpass-extension = callPackage ./browserpass-extension { };
     bypass-paywalls-clean = callPackage ./bypass-paywalls-clean { };
     ctrl-shift-c-should-copy = callPackage ./ctrl-shift-c-should-copy { };
+    open-in-mpv = callPackage ./open-in-mpv { };
 
     ether-metamask = fetchVersionedAddon rec {
       extid = "webextension@metamask.io";
@@ -138,17 +139,6 @@ in (lib.makeScope newScope (self: with self; {
       version = "1.49";
       hash = "sha256-LnR5z3fqNJywlr/khFdV4qloKGQhbxNZQvWCEgz97DU=";
     };
-    open-in-mpv = fetchVersionedAddon rec {
-      # usage:
-      # - click the "puzzle" icon in top-right of browser -> open in mpv
-      # - or, (shift)right-click a video and select "open in mpv"
-      #   - but note that this option does not work for Youtube videos
-      extid = "{d66c8515-1e0d-408f-82ee-2682f2362726}";
-      pname = "open-in-mpv";
-      url = "https://github.com/Baldomo/open-in-mpv/releases/download/v${version}/firefox.xpi";
-      version = "2.2.0";
-      hash = "sha256-jRP0hvEyScGnQ2K5EFX+ggtu6B0h9Y3fJxYYnI8cMbc=";
-    };
     sidebery = fetchVersionedAddon rec {
       extid = "{3c078156-979c-498b-8990-85f7987dd929}";
       pname = "sidebery";

pkgs/additional/firefox-extensions/open-in-mpv/default.nix

@@ -0,0 +1,20 @@
+{ stdenv
+, open-in-mpv
+, zip
+}:
+stdenv.mkDerivation {
+  pname = "open-in-mpv-firefox";
+  inherit (open-in-mpv) version src;
+
+  nativeBuildInputs = [ zip ];
+
+  installPhase = ''
+    runHook preInstall
+    install build/firefox.zip $out
+    runHook postInstall
+  '';
+
+  makeFlags = [ "build/firefox.zip" ];
+
+  passthru.extid = "{d66c8515-1e0d-408f-82ee-2682f2362726}";
+}