fix helium widevine x86_64

packages/helium-browser/widevine-x86_64-linux.nix

@@ -0,0 +1,44 @@
+{
+  lib,
+  stdenv,
+  fetchurl,
+  go-crx3,
+}:
+
+let
+  manifest = builtins.fromJSON (builtins.readFile ./x86_64-manifest.json);
+in
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "widevine-cdm";
+  version = manifest.version;
+
+  src = fetchurl {
+    url = manifest.url;
+    hash = manifest.sri;
+  };
+
+  nativeBuildInputs = [ go-crx3 ];
+
+  unpackPhase = ''
+    unpackDir="src"
+    cp "$src" "$unpackDir".crx # go-crx3 doesn't like .crx3 extensions
+    crx3 unpack "$unpackDir".crx
+
+    cd "$unpackDir"
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    install -vD manifest.json $out/share/helium/WidevineCdm/manifest.json
+    install -vD LICENSE $out/share/helium/WidevineCdm/LICENSE.txt
+    install -vD _platform_specific/linux_x64/libwidevinecdm.so $out/share/helium/WidevineCdm/_platform_specific/linux_x64/libwidevinecdm.so
+
+    runHook postInstall
+  '';
+
+  passthru.updateScript = ./update-x86_64.py;
+
+  meta = import ./meta.nix lib;
+})