uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/libraries/swiftshader/default.nix

@@ -0,0 +1,63 @@
+{ lib, stdenv, fetchgit, python3, cmake, jq, libX11, libXext, zlib }:
+
+stdenv.mkDerivation rec {
+  pname = "swiftshader";
+  version = "2020-11-06";
+
+  src = fetchgit {
+    url = "https://swiftshader.googlesource.com/SwiftShader";
+    rev = "4ed9d3498dcffa987acba1a8007ff8dec336f263";
+    sha256 = "1gz2zflfacxf34s78djddf93brn9kyxj4byc4p2ip1pin43lh2lg";
+  };
+
+  nativeBuildInputs = [ cmake python3 jq ];
+  buildInputs = [ libX11 libXext zlib ];
+
+  # Make sure we include the drivers and icd files in the output as the cmake
+  # generated install command only puts in the spirv-tools stuff.
+  installPhase = ''
+    runHook preInstall
+
+    #
+    # Vulkan driver
+    #
+    vk_so_path="$out/lib/libvk_swiftshader.so"
+    mkdir -p "$(dirname "$vk_so_path")"
+    mv Linux/libvk_swiftshader.so "$vk_so_path"
+
+    vk_icd_json="$out/share/vulkan/icd.d/vk_swiftshader_icd.json"
+    mkdir -p "$(dirname "$vk_icd_json")"
+    jq ".ICD.library_path = \"$vk_so_path\"" <Linux/vk_swiftshader_icd.json >"$vk_icd_json"
+
+    #
+    # GL driver
+    #
+    gl_so_path="$out/lib/libEGL.so"
+    mkdir -p "$(dirname "$gl_so_path")"
+    mv Linux/libEGL.so "$gl_so_path"
+
+    gl_icd_json="$out/share/glvnd/egl_vendor.d/swiftshader.json"
+    mkdir -p "$(dirname "$gl_icd_json")"
+    cat >"$gl_icd_json" <<EOF
+    {
+      "file_format_version" : "1.0.0",
+      "ICD" : {
+          "library_path" : "$gl_so_path"
+      }
+    }
+    EOF
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description =
+      "A high-performance CPU-based implementation of the Vulkan, OpenGL ES, and Direct3D 9 graphics APIs";
+    homepage = "https://opensource.google/projects/swiftshader";
+    license = licenses.asl20;
+    # Should be possible to support Darwin by changing the install phase with
+    # 's/Linux/Darwin/' and 's/so/dylib/' or something similar.
+    platforms = [ "i686-linux" "x86_64-linux" "armv7l-linux" "mipsel-linux" ];
+    maintainers = with maintainers; [ expipiplus1 ];
+  };
+}