1 files changed, 41 insertions, 0 deletions
diff --git a/pkgs/build-support/fetchfirefoxaddon/default.nix b/pkgs/build-support/fetchfirefoxaddon/default.nix
new file mode 100644
index 00000000000..127f32dd61b
--- /dev/null
+++ b/pkgs/build-support/fetchfirefoxaddon/default.nix
@@ -0,0 +1,41 @@
+{stdenv, lib, coreutils, unzip, jq, zip, fetchurl,writeScript,  ...}:
+
+{
+  name
+, url
+, md5 ? ""
+, sha1 ? ""
+, sha256 ? ""
+, sha512 ? ""
+, fixedExtid ? null
+, hash ? ""
+}:
+
+stdenv.mkDerivation rec {
+
+  inherit name;
+  extid = if fixedExtid == null then "nixos@${name}" else fixedExtid;
+  passthru = {
+    inherit extid;
+  };
+
+  builder = writeScript "xpibuilder" ''
+    source $stdenv/setup
+
+    header "firefox addon $name into $out"
+
+    UUID="${extid}"
+    mkdir -p "$out/$UUID"
+    unzip -q ${src} -d "$out/$UUID"
+    NEW_MANIFEST=$(jq '. + {"applications": { "gecko": { "id": "${extid}" }}, "browser_specific_settings":{"gecko":{"id": "${extid}"}}}' "$out/$UUID/manifest.json")
+    echo "$NEW_MANIFEST" > "$out/$UUID/manifest.json"
+    cd "$out/$UUID"
+    zip -r -q -FS "$out/$UUID.xpi" *
+    rm -r "$out/$UUID"
+  '';
+  src = fetchurl {
+    url = url;
+    inherit md5 sha1 sha256 sha512 hash;
+  };
+  nativeBuildInputs = [ coreutils unzip zip jq  ];
+}