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/cargo.nix

@@ -0,0 +1,76 @@
+{ lib, stdenv, pkgsHostHost
+, file, curl, pkg-config, python3, openssl, cmake, zlib
+, installShellFiles, makeWrapper, cacert, rustPlatform, rustc
+, CoreFoundation, Security
+}:
+
+rustPlatform.buildRustPackage {
+  pname = "cargo";
+  inherit (rustc) version src;
+
+  # the rust source tarball already has all the dependencies vendored, no need to fetch them again
+  cargoVendorDir = "vendor";
+  buildAndTestSubdir = "src/tools/cargo";
+
+  passthru.rustc = rustc;
+
+  # changes hash of vendor directory otherwise
+  dontUpdateAutotoolsGnuConfigScripts = true;
+
+  nativeBuildInputs = [
+    pkg-config cmake installShellFiles makeWrapper
+    (lib.getDev pkgsHostHost.curl)
+  ];
+  buildInputs = [ cacert file curl python3 openssl zlib ]
+    ++ lib.optionals stdenv.isDarwin [ CoreFoundation Security ];
+
+  # cargo uses git-rs which is made for a version of libgit2 from recent master that
+  # is not compatible with the current version in nixpkgs.
+  #LIBGIT2_SYS_USE_PKG_CONFIG = 1;
+
+  # fixes: the cargo feature `edition` requires a nightly version of Cargo, but this is the `stable` channel
+  RUSTC_BOOTSTRAP = 1;
+
+  postInstall = ''
+    # NOTE: We override the `http.cainfo` option usually specified in
+    # `.cargo/config`. This is an issue when users want to specify
+    # their own certificate chain as environment variables take
+    # precedence
+    wrapProgram "$out/bin/cargo" \
+      --suffix PATH : "${rustc}/bin" \
+      --set CARGO_HTTP_CAINFO "${cacert}/etc/ssl/certs/ca-bundle.crt" \
+      --set SSL_CERT_FILE "${cacert}/etc/ssl/certs/ca-bundle.crt"
+
+    installManPage src/tools/cargo/src/etc/man/*
+
+    installShellCompletion --bash --name cargo \
+      src/tools/cargo/src/etc/cargo.bashcomp.sh
+
+    installShellCompletion --zsh src/tools/cargo/src/etc/_cargo
+  '';
+
+  checkPhase = ''
+    # Disable cross compilation tests
+    export CFG_DISABLE_CROSS_TESTS=1
+    cargo test
+  '';
+
+  # Disable check phase as there are failures (4 tests fail)
+  doCheck = false;
+
+  doInstallCheck = !stdenv.hostPlatform.isStatic &&
+    stdenv.hostPlatform.parsed.kernel.execFormat == lib.systems.parse.execFormats.elf;
+  installCheckPhase = ''
+    runHook preInstallCheck
+    readelf -a $out/bin/.cargo-wrapped | grep -F 'Shared library: [libcurl.so'
+    runHook postInstallCheck
+  '';
+
+  meta = with lib; {
+    homepage = "https://crates.io";
+    description = "Downloads your Rust project's dependencies and builds your project";
+    maintainers = with maintainers; [ retrry ];
+    license = [ licenses.mit licenses.asl20 ];
+    platforms = platforms.unix;
+  };
+}