From 9a680ec3c0dffdb7cb0cc59beb2c60070374a9b0 Mon Sep 17 00:00:00 2001
From: brian <brian@briannelson.dev>
Date: Sun, 19 Apr 2026 09:16:46 -0400
Subject: [PATCH] working

---
 default.nix |   2 +
 package.nix | 157 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 result      |   1 +
 3 files changed, 160 insertions(+)
 create mode 100644 default.nix
 create mode 100644 package.nix
 create mode 120000 result

diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..50a509b
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,2 @@
+with import <nixpkgs> { config.allowUnfree = true; };
+callPackage ./package.nix {}
\ No newline at end of file
diff --git a/package.nix b/package.nix
new file mode 100644
index 0000000..d45728d
--- /dev/null
+++ b/package.nix
@@ -0,0 +1,157 @@
+{ lib
+, stdenv
+, fetchurl
+, dwarfs
+, makeDesktopItem
+, copyDesktopItems
+, makeWrapper
+, steam-run
+, patchelf
+, glibc
+, zlib
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "opengoal-launcher";
+  version = "2.9.1";
+
+  src = fetchurl {
+    url = "https://github.com/open-goal/launcher/releases/download/v${finalAttrs.version}/OpenGOAL-Launcher_${finalAttrs.version}_amd64.AppImage";
+    hash = "sha256-McdifSYCHmCTkbmAlSBYlsJwjNTSdinMnMoETi6g4C8=";
+  };
+
+  nativeBuildInputs = [
+    dwarfs
+    copyDesktopItems
+    makeWrapper
+  ];
+
+  dontPatchELF = true;
+  dontStrip = true;
+  dontPatchShebangs = true;
+  dontAutoPatchelf = true;
+  dontUnpack = true;
+  dontBuild = true;
+
+  desktopItems = [
+    (makeDesktopItem {
+      name = "opengoal-launcher";
+      exec = "opengoal-launcher";
+      icon = "opengoal-launcher";
+      desktopName = "OpenGOAL Launcher";
+      comment = "Launcher for OpenGOAL - native PC port of Jak and Daxter";
+      categories = [ "Game" ];
+    })
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    # Extract the DwarFS AppImage
+    mkdir -p extracted
+    dwarfsextract \
+      -i ${finalAttrs.src} \
+      -o extracted \
+      --image-offset 1454544
+
+    # Remove dangling symlinks from bundled AppImage
+    find extracted -xtype l -delete
+
+    # Install the self-contained binary and its bundled libs
+    mkdir -p $out/opt/opengoal-launcher
+    cp -r extracted/. $out/opt/opengoal-launcher/
+
+    chmod +x $out/opt/opengoal-launcher/bin/OpenGOAL-Launcher
+    chmod +x $out/opt/opengoal-launcher/sharun
+    chmod +x $out/opt/opengoal-launcher/AppRun
+
+    mkdir -p $out/bin
+
+    # opengoal-patch-bins: run after the launcher downloads a new version
+    # Uses a quoted heredoc ('EOF') so that $@ and other shell vars are
+    # written literally into the generated script rather than expanded now
+    cat > $out/bin/opengoal-patch-bins << 'PATCHSCRIPT'
+    #!/bin/sh
+    set -e
+
+    VERSIONS_DIR="$1"
+
+    if [ -z "$VERSIONS_DIR" ]; then
+      echo "Usage: opengoal-patch-bins <path-to-version-dir>"
+      echo "Example: opengoal-patch-bins /path/to/opengoal/versions/official/v0.3.1"
+      exit 1
+    fi
+
+    LINKER="GLIBC_LIB/ld-linux-x86-64.so.2"
+    RPATH="GLIBC_LIB:ZLIB_LIB"
+    STEAM_RUN="STEAM_RUN_BIN"
+    PATCHELF="PATCHELF_BIN"
+
+    for bin in gk extractor goalc; do
+      if [ -f "$VERSIONS_DIR/$bin" ]; then
+        # Skip if already patched
+        if [ -f "$VERSIONS_DIR/$bin.real" ]; then
+          echo "Skipping $bin (already patched)"
+          continue
+        fi
+        echo "Patching $bin..."
+        "$PATCHELF" \
+          --set-interpreter "$LINKER" \
+          --set-rpath "$RPATH" \
+          "$VERSIONS_DIR/$bin"
+        mv "$VERSIONS_DIR/$bin" "$VERSIONS_DIR/$bin.real"
+        printf '#!/bin/sh\nexec "%s" "%s" "$@"\n' \
+          "$STEAM_RUN" \
+          "$VERSIONS_DIR/$bin.real" \
+          > "$VERSIONS_DIR/$bin"
+        chmod +x "$VERSIONS_DIR/$bin"
+        echo "Done: $bin"
+      fi
+    done
+
+    echo "All binaries patched. You can now launch games via the OpenGOAL Launcher."
+    PATCHSCRIPT
+
+    # Replace the placeholders with actual nix store paths
+    substituteInPlace $out/bin/opengoal-patch-bins \
+      --replace "GLIBC_LIB" "${glibc}/lib" \
+      --replace "ZLIB_LIB" "${zlib}/lib" \
+      --replace "STEAM_RUN_BIN" "${steam-run}/bin/steam-run" \
+      --replace "PATCHELF_BIN" "${patchelf}/bin/patchelf"
+
+    chmod +x $out/bin/opengoal-patch-bins
+
+    # Main launcher wrapper - clean PATH, no leaked build tools
+    makeWrapper $out/opt/opengoal-launcher/AppRun $out/bin/opengoal-launcher \
+      --set APPDIR $out/opt/opengoal-launcher \
+      --prefix PATH : $out/opt/opengoal-launcher/bin
+
+    # Install icon
+    mkdir -p $out/share/icons/hicolor/256x256/apps
+    cp extracted/OpenGOAL-Launcher.png \
+      $out/share/icons/hicolor/256x256/apps/opengoal-launcher.png
+
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Launcher for OpenGOAL, a native PC port of the Jak and Daxter series";
+    longDescription = ''
+      OpenGOAL is a project to decompile and recompile the Jak and Daxter series
+      of games for modern PC hardware. This launcher simplifies the installation,
+      configuration, and update process for OpenGOAL games.
+
+      Note: After the launcher downloads a new game version, run
+      opengoal-patch-bins <path-to-version-dir> to patch the game binaries
+      for NixOS compatibility. Example:
+        opengoal-patch-bins /path/to/opengoal/versions/official/v0.3.1
+    '';
+    homepage = "https://opengoal.dev";
+    downloadPage = "https://github.com/open-goal/launcher/releases";
+    changelog = "https://github.com/open-goal/launcher/releases/tag/v${finalAttrs.version}";
+    license = lib.licenses.isc;
+    maintainers = with lib.maintainers; [ ];
+    platforms = [ "x86_64-linux" ];
+    sourceProvenance = with lib.sourceTypes; [ binaryNativeCode ];
+  };
+})
\ No newline at end of file
diff --git a/result b/result
new file mode 120000
index 0000000..6f50428
--- /dev/null
+++ b/result
@@ -0,0 +1 @@
+/nix/store/rcywa2yb7h57rbn3mcyw6yxxh42bjqpn-opengoal-launcher-2.9.1
\ No newline at end of file