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/tools/regclient/default.nix

@@ -0,0 +1,42 @@
+{ stdenv, lib, buildGoModule, fetchFromGitHub }:
+
+let bins = [ "regbot" "regctl" "regsync" ]; in
+
+buildGoModule rec {
+  pname = "regclient";
+  version = "0.4.0";
+  tag = "v${version}";
+
+  src = fetchFromGitHub {
+    owner = "regclient";
+    repo = "regclient";
+    rev = tag;
+    sha256 = "sha256-AaSl++/i00YAvmvaUSEwLLpItYACtmWEFTuUngl7rkI=";
+  };
+  vendorSha256 = "sha256-qpZ3RsBOkWqLCDK11vBGkAZJBC7T8hmpmm4ccGeWBus=";
+
+  outputs = [ "out" ] ++ bins;
+
+  ldflags = [
+    "-s"
+    "-w"
+    "-X main.VCSTag=${tag}"
+  ];
+
+  postInstall =
+    lib.concatStringsSep "\n" (
+      map (bin: ''
+        mkdir -p ''$${bin}/bin &&
+        mv $out/bin/${bin} ''$${bin}/bin/ &&
+        ln -s ''$${bin}/bin/${bin} $out/bin/
+      '') bins
+    );
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    description = "Docker and OCI Registry Client in Go and tooling using those libraries";
+    homepage = "https://github.com/regclient/regclient";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ ];
+  };
+}