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/myrddin/default.nix

@@ -0,0 +1,59 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, pkg-config
+, bison
+, binutils
+, binutils-unwrapped
+, makeWrapper
+}:
+
+stdenv.mkDerivation rec {
+  pname = "myrddin";
+  version = "0.3.1";
+
+  src = fetchFromGitHub {
+    repo = "mc";
+    owner = "oridb";
+    rev = "r${version}";
+    sha256 = "7ImjiG/rIKGPHq3Vh/mftY7pqw/vfOxD3LJeT87HmCk=";
+  };
+
+  nativeBuildInputs = [
+    bison
+    pkg-config
+    makeWrapper
+  ];
+
+  postPatch = ''
+    substituteInPlace mk/c.mk \
+        --replace "-Werror" ""
+  '';
+
+  buildPhase = ''
+    make bootstrap
+    make
+  '';
+
+  postInstall = ''
+    for b in $out/bin/*; do
+        wrapProgram $b --prefix PATH : $out/bin:${lib.makeBinPath [ binutils ]}
+    done
+  '';
+
+  checkPhase = ''
+    make check
+  '';
+
+  doCheck = true;
+
+  meta = with lib; {
+    # darwin: never built on Hydra https://hydra.nixos.org/job/nixpkgs/trunk/myrddin.x86_64-darwin
+    broken = (stdenv.isLinux && stdenv.isAarch64) || stdenv.isDarwin;
+    description = "Systems language that is both powerful and fun to use";
+    homepage = "https://myrlang.org/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ luc65r ];
+    platforms = platforms.all;
+  };
+}