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/tools/text/dcs/default.nix

@@ -0,0 +1,47 @@
+{ lib
+, buildGoModule
+, fetchFromGitHub
+, yuicompressor
+, zopfli
+, stdenv
+}:
+buildGoModule {
+  pname = "dcs";
+  version = "unstable-2021-04-07";
+
+  src = fetchFromGitHub {
+    owner = "Debian";
+    repo = "dcs";
+    rev = "da46accc4d55e9bfde1a6852ac5a9e730fcbbb2c";
+    sha256 = "N+6BXlKn1YTlh0ZdPNWa0nuJNcQtlUIc9TocM8cbzQk=";
+  };
+
+  vendorSha256 = "l2mziuisx0HzuP88rS5M+Wha6lu8P036wJYZlmzjWfs=";
+
+  # Depends on dcs binaries
+  doCheck = false;
+
+  nativeBuildInputs = [
+    yuicompressor
+    zopfli
+  ];
+
+  postBuild = ''
+    make -C static -j$NIX_BUILD_CORES
+  '';
+
+  postInstall = ''
+    mkdir -p $out/share/dcs
+    cp -r cmd/dcs-web/templates $out/share/dcs
+    cp -r static $out/share/dcs
+  '';
+
+  meta = with lib; {
+    description = "Debian Code Search";
+    homepage = "https://github.com/Debian/dcs";
+    license = licenses.bsd3;
+    maintainers = teams.determinatesystems.members;
+    broken = stdenv.isAarch64
+      || stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/dcs.x86_64-darwin
+  };
+}