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/buildpack/default.nix

@@ -0,0 +1,36 @@
+{ lib, buildGoModule, fetchFromGitHub, installShellFiles }:
+
+buildGoModule rec {
+  pname = "pack";
+  version = "0.26.0";
+
+  src = fetchFromGitHub {
+    owner = "buildpacks";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-P6rfYrjk7MWVvNowaIKc0PzCzAyHRK+qw2BDe56CPp8=";
+  };
+
+  vendorSha256 = "sha256-ygHE52zYU/Zx/bSHMeTTFZyBvWrIKeuO0bciB4E0dHE=";
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  subPackages = [ "cmd/pack" ];
+
+  ldflags = [ "-s" "-w" "-X github.com/buildpacks/pack.Version=${version}" ];
+
+  postInstall = ''
+    installShellCompletion --cmd pack \
+      --zsh $(PACK_HOME=$PWD $out/bin/pack completion --shell zsh) \
+      --bash $(PACK_HOME=$PWD $out/bin/pack completion --shell bash) \
+      --fish $(PACK_HOME=$PWD $out/bin/pack completion --shell fish)
+  '';
+
+  meta = with lib; {
+    homepage = "https://buildpacks.io/";
+    changelog = "https://github.com/buildpacks/pack/releases/tag/v${version}";
+    description = "CLI for building apps using Cloud Native Buildpacks";
+    license = licenses.asl20;
+    maintainers = [ maintainers.marsam ];
+  };
+}