nixpkgs/pkgs/by-name/ap/apple-sdk/common/propagate-xcrun.nix

{
  lib,
  pkgsBuildHost,
  stdenv,
  stdenvNoCC,
}:

let
  plists = import ./plists.nix {
    inherit lib stdenvNoCC;
    xcodePlatform = if stdenvNoCC.hostPlatform.isMacOS then "MacOSX" else "iPhoneOS";
  };
  inherit (pkgsBuildHost) darwin cctools xcbuild;
in
self: super: {
  propagatedNativeBuildInputs = super.propagatedNativeBuildInputs or [ ] ++ [ xcbuild.xcrun ];

  postInstall = super.postInstall or "" + ''
    specspath=$out/Library/Xcode/Specifications
    toolchainsPath=$out/Toolchains/XcodeDefault.xctoolchain
    mkdir -p "$specspath" "$toolchainsPath"

    # xcbuild expects to find things relative to the plist locations. If these are linked instead of copied,
    # it won’t find any platforms or SDKs.
    cp '${plists."Info.plist"}' "$platformPath/Info.plist"
    cp '${plists."ToolchainInfo.plist"}' "$toolchainsPath/ToolchainInfo.plist"

    for spec in '${xcbuild}/Library/Xcode/Specifications/'*; do
      ln -s "$spec" "$specspath/$(basename "$spec")"
    done
    cp '${plists."Architectures.xcspec"}' "$specspath/Architectures.xcspec"
    cp '${plists."PackageTypes.xcspec"}' "$specspath/PackageTypes.xcspec"
    cp '${plists."ProductTypes.xcspec"}' "$specspath/ProductTypes.xcspec"

    mkdir -p "$out/usr/bin"
    ln -s '${xcbuild.xcrun}/bin/xcrun' "$out/usr/bin/xcrun"

    # Include `libtool` in the toolchain, so `xcrun -find libtool` can find it without requiring `cctools.libtool`
    # as a `nativeBuildInput`.
    mkdir -p "$toolchainsPath/usr/bin"
    ln -s '${cctools.libtool}/bin/${stdenv.cc.targetPrefix}libtool' "$toolchainsPath/usr/bin/libtool"

    # Include additional binutils required by some packages (such as Chromium).
    for tool in lipo nm otool size strip; do
      ln -s '${darwin.binutils-unwrapped}/bin/${stdenv.cc.targetPrefix}'$tool "$toolchainsPath/usr/bin/$tool"
    done
  '';
}