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/crystal/build-package.nix

@@ -0,0 +1,159 @@
+{ stdenv
+, lib
+, crystal
+, shards
+, git
+, pkg-config
+, which
+, linkFarm
+, fetchgit
+, fetchFromGitHub
+, installShellFiles
+, removeReferencesTo
+}:
+
+{
+  # Some projects do not include a lock file, so you can pass one
+  lockFile ? null
+  # Generate shards.nix with `nix-shell -p crystal2nix --run crystal2nix` in the projects root
+, shardsFile ? null
+  # We support different builders. To make things more straight forward, make it
+  # user selectable instead of trying to autodetect
+, format ? "make"
+, installManPages ? true
+  # Specify binaries to build in the form { foo.src = "src/foo.cr"; }
+  # The default `crystal build` options can be overridden with { foo.options = [ "--optionname" ]; }
+, crystalBinaries ? { }
+, enableParallelBuilding ? true
+, ...
+}@args:
+
+assert (builtins.elem format [ "make" "crystal" "shards" ]);
+let
+  mkDerivationArgs = builtins.removeAttrs args [
+    "format"
+    "installManPages"
+    "lockFile"
+    "shardsFile"
+    "crystalBinaries"
+  ];
+
+  crystalLib = linkFarm "crystal-lib" (lib.mapAttrsToList
+    (name: value: {
+      inherit name;
+      path =
+        if (builtins.hasAttr "url" value)
+        then fetchgit value
+        else fetchFromGitHub value;
+    })
+    (import shardsFile));
+
+  defaultOptions = [ "--release" "--progress" "--verbose" "--no-debug" ];
+
+  buildDirectly = shardsFile == null || crystalBinaries != { };
+
+  mkCrystalBuildArgs = bin: attrs:
+    lib.concatStringsSep " " ([
+      "crystal"
+      "build"
+    ] ++ lib.optionals enableParallelBuilding [
+      "--threads"
+      "$NIX_BUILD_CORES"
+    ] ++ [
+      "-o"
+      bin
+      (attrs.src or (throw "No source file for crystal binary ${bin} provided"))
+      (lib.concatStringsSep " " (attrs.options or defaultOptions))
+    ]);
+
+in
+stdenv.mkDerivation (mkDerivationArgs // {
+
+  configurePhase = args.configurePhase or lib.concatStringsSep "\n"
+    (
+      [
+        "runHook preConfigure"
+      ]
+      ++ lib.optional (lockFile != null) "cp ${lockFile} ./shard.lock"
+      ++ lib.optionals (shardsFile != null) [
+        "test -e lib || mkdir lib"
+        "for d in ${crystalLib}/*; do ln -s $d lib/; done"
+        "cp shard.lock lib/.shards.info"
+      ]
+      ++ [ "runHook postConfigure" ]
+    );
+
+  CRFLAGS = lib.concatStringsSep " " defaultOptions;
+
+  PREFIX = placeholder "out";
+
+  inherit enableParallelBuilding;
+  strictDeps = true;
+  buildInputs = args.buildInputs or [ ] ++ [ crystal ];
+
+  nativeBuildInputs = args.nativeBuildInputs or [ ] ++ [
+    crystal
+    git
+    installShellFiles
+    removeReferencesTo
+    pkg-config
+    which
+  ] ++ lib.optional (format != "crystal") shards;
+
+  buildPhase = args.buildPhase or (lib.concatStringsSep "\n" ([
+    "runHook preBuild"
+  ] ++ lib.optional (format == "make")
+    "make \${buildTargets:-build} $makeFlags"
+  ++ lib.optionals (format == "crystal") (lib.mapAttrsToList mkCrystalBuildArgs crystalBinaries)
+  ++ lib.optional (format == "shards")
+    "shards build --local --production ${lib.concatStringsSep " " (args.options or defaultOptions)}"
+  ++ [ "runHook postBuild" ]));
+
+  installPhase = args.installPhase or (lib.concatStringsSep "\n" ([
+    "runHook preInstall"
+  ] ++ lib.optional (format == "make")
+    "make \${installTargets:-install} $installFlags"
+  ++ lib.optionals (format == "crystal") (map
+    (bin: ''
+      install -Dm555 ${lib.escapeShellArgs [ bin "${placeholder "out"}/bin/${bin}" ]}
+    '')
+    (lib.attrNames crystalBinaries))
+  ++ lib.optional (format == "shards")
+    "install -Dm555 bin/* -t $out/bin"
+  ++ [
+    ''
+      for f in README* *.md LICENSE; do
+        test -f $f && install -Dm444 $f -t $out/share/doc/${args.pname}
+      done
+    ''
+  ] ++ (lib.optional installManPages ''
+    if [ -d man ]; then
+      installManPage man/*.?
+    fi
+  '') ++ [
+    "remove-references-to -t ${lib.getLib crystal} $out/bin/*"
+    "runHook postInstall"
+  ]));
+
+  doCheck = args.doCheck or true;
+
+  checkPhase = args.checkPhase or (lib.concatStringsSep "\n" ([
+    "runHook preCheck"
+  ] ++ lib.optional (format == "make")
+    "make \${checkTarget:-test} $checkFlags"
+  ++ lib.optional (format != "make")
+    "crystal \${checkTarget:-spec} $checkFlags"
+  ++ [ "runHook postCheck" ]));
+
+  doInstallCheck = args.doInstallCheck or true;
+
+  installCheckPhase = args.installCheckPhase or ''
+    for f in $out/bin/*; do
+      $f --help > /dev/null
+    done
+  '';
+
+  meta = args.meta or { } // {
+    platforms = args.meta.platforms or crystal.meta.platforms;
+  };
+})