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/rust/cargo-msrv/default.nix

@@ -0,0 +1,53 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, nix-update-script
+, pkg-config
+, rustup
+, openssl
+, stdenv
+, libiconv
+, Security
+, makeWrapper
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "cargo-msrv";
+  version = "0.15.1";
+
+  src = fetchFromGitHub {
+    owner = "foresterre";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-rmWPkxxrpVamYHII0xkZq62ubL3/jrcqXUvFH9VuNtg=";
+  };
+
+  cargoSha256 = "sha256-/Bspy94uIP/e4uJY8qo+UPK1tnPjglxiMWeYWx2qoHk=";
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = pname;
+    };
+  };
+
+  # Integration tests fail
+  doCheck = false;
+
+  buildInputs = if stdenv.isDarwin
+    then [ libiconv Security ]
+    else [ openssl ];
+
+  nativeBuildInputs = [ pkg-config makeWrapper ];
+
+  # Depends at run-time on having rustup in PATH
+  postInstall = ''
+    wrapProgram $out/bin/cargo-msrv --prefix PATH : ${lib.makeBinPath [ rustup ]};
+  '';
+
+  meta = with lib; {
+    description = "Cargo subcommand \"msrv\": assists with finding your minimum supported Rust version (MSRV)";
+    homepage = "https://github.com/foresterre/cargo-msrv";
+    license = with licenses; [ asl20 /* or */ mit ];
+    maintainers = with maintainers; [ otavio ];
+  };
+}