1 files changed, 57 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/servers/fishnet/assets.nix b/nixpkgs/pkgs/servers/fishnet/assets.nix
new file mode 100644
index 000000000000..6844db1b810c
--- /dev/null
+++ b/nixpkgs/pkgs/servers/fishnet/assets.nix
@@ -0,0 +1,57 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, xz
+, autoPatchelfHook }:
+
+# Assets for fishnet: A collection of pre-built compressed stockfish binaries.
+# We have to decompress them, patch them using auto-patchelf and compress them
+# again so that a selection of them can be embedded into the fishnet binary.
+stdenv.mkDerivation rec {
+  pname = "fishnet-assets";
+  version = "unstable-2020-01-30";
+
+  src = fetchFromGitHub {
+    owner = "niklasf";
+    repo = pname;
+    rev = "b4fa30e57ec8976fb1c10bd36737bc784351b93e";
+    sha256 = "0gfs9lm4ih3h3fmgqylw05ii1h0d6mpjfxadnw3wymnjsspfb0m4";
+  };
+
+  relAssetsPath = "share/${pname}";
+
+  nativeBuildInputs = [ xz autoPatchelfHook ];
+
+  postPatch = ''
+    # Delete packed .exe files and all non .xz files (documentation and readme)
+    rm *.exe.xz
+    find \! -name "*.xz" -delete
+    # Extract .xz files, except *.nnue.xz
+    # We don't have to unpack the latter and it takes ages to repack
+    find -name "*.xz" \! -name "*.nnue.xz" | xargs unxz -v
+  '';
+
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/${relAssetsPath}
+    cp ./* $out/${relAssetsPath}
+  '';
+
+  preFixup = ''
+    gatherLibraries '${stdenv.cc.cc.lib}'
+  '';
+
+  doDist = true;
+  distPhase = ''
+    # repack assets
+    find $out/${relAssetsPath} -type f \! -name "*.xz" | xargs xz -v
+  '';
+
+  meta = with lib; {
+    description = "Assets for fishnet, only required during build";
+    homepage = "https://github.com/niklasf/fishnet-assets";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ tu-maurice ];
+  };
+}