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/rust/rls/default.nix

@@ -0,0 +1,53 @@
+{ lib, stdenv, makeWrapper, fetchFromGitHub, rustPlatform
+, openssh, openssl, pkg-config, cmake, zlib, curl, libiconv
+, CoreFoundation, Security, SystemConfiguration }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "rls";
+  inherit (rustPlatform.rust.rustc) src version;
+
+  # changes hash of vendor directory otherwise
+  dontUpdateAutotoolsGnuConfigScripts = true;
+
+  cargoVendorDir = "vendor";
+  buildAndTestSubdir = "src/tools/rls";
+
+  preBuild = ''
+    # client tests are flaky
+    rm ${buildAndTestSubdir}/tests/client.rs
+  '';
+
+  # a nightly compiler is required unless we use this cheat code.
+  RUSTC_BOOTSTRAP=1;
+
+  # As of rustc 1.45.0, these env vars are required to build rls
+  # (due to https://github.com/rust-lang/rust/pull/72001)
+  CFG_RELEASE = "${rustPlatform.rust.rustc.version}-nightly";
+  CFG_RELEASE_CHANNEL = "nightly";
+
+  # rls-rustc links to rustc_private crates
+  CARGO_BUILD_RUSTFLAGS = if stdenv.isDarwin then "-C rpath" else null;
+
+  nativeBuildInputs = [ pkg-config cmake makeWrapper ];
+  buildInputs = [ openssh openssl curl zlib libiconv rustPlatform.rust.rustc.llvm ]
+    ++ lib.optionals stdenv.isDarwin [ CoreFoundation Security SystemConfiguration ];
+
+  doCheck = true;
+
+  doInstallCheck = true;
+  installCheckPhase = ''
+    $out/bin/rls --version
+  '';
+
+  RUST_SRC_PATH = rustPlatform.rustLibSrc;
+  postInstall = ''
+    wrapProgram $out/bin/rls --set-default RUST_SRC_PATH ${rustPlatform.rustLibSrc}
+  '';
+
+  meta = with lib; {
+    description = "Rust Language Server - provides information about Rust programs to IDEs and other tools";
+    homepage = "https://github.com/rust-lang/rls/";
+    license = with licenses; [ asl20 /* or */ mit ];
+    maintainers = with maintainers; [ symphorien ];
+  };
+}