wip: aarch64 widevine for helium

packages/helium-browser/package.nix

@@ -1,3 +1,7 @@
+# taken (stolen?) from two places:
+# https://github.com/fpletz/flake/blob/main/pkgs/by-name/helium-browser.nix
+# https://github.com/nix-community/nur-combined/blob/main/repos/Ev357/pkgs/helium/default.nix
+# so shoutout those guys
 {
   stdenv,
   lib,
@@ -5,6 +9,7 @@
   fetchurl,
   makeDesktopItem,
   copyDesktopItems,
+  widevine-helium ? null,
 }:
 let
   pname = "helium-browser";
@@ -13,7 +18,7 @@ let
   architectures = {
     "x86_64-linux" = {
       arch = "x86_64";
-      hash = lib.fakeHash;
+      hash = "sha256-DlEFuFwx2Qjr9eb6uiSYzM/F3r2hdtkMW5drJyJt/YE=";
     };
     "aarch64-linux" = {
       arch = "arm64";
@@ -30,19 +35,24 @@ let
       inherit hash;
     };
 
-  appimageContents = appimageTools.extractType2 {
-    inherit pname version src;
-  };
+  appImageContents = appimageTools.extractType2 { inherit pname version src; };
+
 in
 appimageTools.wrapType2 {
   inherit pname version src;
   extraInstallCommands = ''
-    install -Dm444 ${appimageContents}/helium.desktop -t $out/share/applications
-    install -Dm444 ${appimageContents}/helium.png -t $out/share/pixmaps
-
+    mkdir -p "$out/share/applications"
+    mkdir -p "$out/share/lib/helium"
+    cp -r ${appImageContents}/opt/helium/locales "$out/share/lib/helium"
+    cp -r ${appImageContents}/usr/share/* "$out/share"
+    cp "${appImageContents}/helium.desktop" "$out/share/applications/"
     substituteInPlace $out/share/applications/helium.desktop \
-      --replace-fail 'Exec=AppRun' 'Exec=${pname}' \
-      --replace-fail 'Icon=helium' 'Icon=web-browser'
+      --replace-fail 'Exec=AppRun' 'Exec=${pname} \
+      --replace-fail 'Icon=helium' 'Icon=web-browser
+
+      ${lib.optionalString (stdenv.hostPlatform.system == "aarch64-linux") ''
+        cp -r ${widevine-helium}/share/helium/WidevineCdm "$out/share/lib/helium/"
+      ''}
   '';
   meta = {
     description = "A private, respectful browser";