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/compilers/nextpnr/default.nix

@@ -0,0 +1,88 @@
+{ lib, stdenv, fetchFromGitHub, cmake
+, boost, python3, eigen, python3Packages
+, icestorm, trellis
+, llvmPackages
+
+, enableGui ? false
+, wrapQtAppsHook ? null
+, qtbase ? null
+, OpenGL ? null
+}:
+
+let
+  boostPython = boost.override { python = python3; enablePython = true; };
+in
+stdenv.mkDerivation rec {
+  pname = "nextpnr";
+  version = "0.3";
+
+  srcs = [
+    (fetchFromGitHub {
+      owner = "YosysHQ";
+      repo  = "nextpnr";
+      rev   = "${pname}-${version}";
+      hash  = "sha256-q4h1TNAn66fJou8abNFowRbGXZTBfz5x+H5Q/psMvIw=";
+      name  = "nextpnr";
+    })
+    (fetchFromGitHub {
+      owner  = "YosysHQ";
+      repo   = "nextpnr-tests";
+      rev    = "00c55a9eb9ea2e062b51fe0d64741412b185d95d";
+      sha256 = "sha256-83suMftMtnaRFq3T2/I7Uahb11WZlXhwYt6Q/rqi2Yo=";
+      name   = "nextpnr-tests";
+    })
+  ];
+
+  sourceRoot = "nextpnr";
+
+  nativeBuildInputs
+     = [ cmake ]
+    ++ (lib.optional enableGui wrapQtAppsHook);
+  buildInputs
+     = [ boostPython python3 eigen python3Packages.apycula ]
+    ++ (lib.optional enableGui qtbase)
+    ++ (lib.optional stdenv.cc.isClang llvmPackages.openmp);
+
+  cmakeFlags =
+    [ "-DCURRENT_GIT_VERSION=${lib.substring 0 7 (lib.elemAt srcs 0).rev}"
+      "-DARCH=generic;ice40;ecp5;gowin"
+      "-DBUILD_TESTS=ON"
+      "-DICESTORM_INSTALL_PREFIX=${icestorm}"
+      "-DTRELLIS_INSTALL_PREFIX=${trellis}"
+      "-DTRELLIS_LIBDIR=${trellis}/lib/trellis"
+      "-DGOWIN_BBA_EXECUTABLE=${python3Packages.apycula}/bin/gowin_bba"
+      "-DUSE_OPENMP=ON"
+      # warning: high RAM usage
+      "-DSERIALIZE_CHIPDBS=OFF"
+    ]
+    ++ (lib.optional enableGui "-DBUILD_GUI=ON")
+    ++ (lib.optional (enableGui && stdenv.isDarwin)
+        "-DOPENGL_INCLUDE_DIR=${OpenGL}/Library/Frameworks");
+
+  patchPhase = with builtins; ''
+    # use PyPy for icestorm if enabled
+    substituteInPlace ./ice40/CMakeLists.txt \
+      --replace ''\'''${PYTHON_EXECUTABLE}' '${icestorm.pythonInterp}'
+  '';
+
+  preBuild = ''
+    ln -s ../nextpnr-tests tests
+  '';
+
+  doCheck = true;
+
+  postFixup = lib.optionalString enableGui ''
+    wrapQtApp $out/bin/nextpnr-generic
+    wrapQtApp $out/bin/nextpnr-ice40
+    wrapQtApp $out/bin/nextpnr-ecp5
+    wrapQtApp $out/bin/nextpnr-gowin
+  '';
+
+  meta = with lib; {
+    description = "Place and route tool for FPGAs";
+    homepage    = "https://github.com/yosyshq/nextpnr";
+    license     = licenses.isc;
+    platforms   = platforms.all;
+    maintainers = with maintainers; [ thoughtpolice emily ];
+  };
+}