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/go-packages/generic/default.nix

@@ -0,0 +1,274 @@
+{ go, govers, lib, fetchgit, fetchhg, fetchbzr, rsync
+, fetchFromGitHub, stdenv }:
+
+{ buildInputs ? []
+, nativeBuildInputs ? []
+, passthru ? {}
+, preFixup ? ""
+, shellHook ? ""
+
+# Go linker flags, passed to go via -ldflags
+, ldflags ? []
+
+# Go tags, passed to go via -tag
+, tags ? []
+
+# We want parallel builds by default
+, enableParallelBuilding ? true
+
+# Go import path of the package
+, goPackagePath
+
+# Go package aliases
+, goPackageAliases ? [ ]
+
+# Extra sources to include in the gopath
+, extraSrcs ? [ ]
+
+# Extra gopaths containing src subfolder
+# with sources to include in the gopath
+, extraSrcPaths ? [ ]
+
+# go2nix dependency file
+, goDeps ? null
+
+# Whether to delete the vendor folder supplied with the source.
+, deleteVendor ? false
+
+, dontRenameImports ? false
+
+# Do not enable this without good reason
+# IE: programs coupled with the compiler
+, allowGoReference ? false
+
+, CGO_ENABLED ? go.CGO_ENABLED
+
+# needed for buildFlags{,Array} warning
+, buildFlags ? ""
+, buildFlagsArray ? ""
+
+, meta ? {}, ... } @ args:
+
+
+with builtins;
+
+let
+  dep2src = goDep:
+    {
+      inherit (goDep) goPackagePath;
+      src = if goDep.fetch.type == "git" then
+        fetchgit {
+          inherit (goDep.fetch) url rev sha256;
+        }
+      else if goDep.fetch.type == "hg" then
+        fetchhg {
+          inherit (goDep.fetch) url rev sha256;
+        }
+      else if goDep.fetch.type == "bzr" then
+        fetchbzr {
+          inherit (goDep.fetch) url rev sha256;
+        }
+      else if goDep.fetch.type == "FromGitHub" then
+        fetchFromGitHub {
+          inherit (goDep.fetch) owner repo rev sha256;
+        }
+      else abort "Unrecognized package fetch type: ${goDep.fetch.type}";
+    };
+
+  importGodeps = { depsFile }:
+    map dep2src (import depsFile);
+
+  goPath = if goDeps != null then importGodeps { depsFile = goDeps; } ++ extraSrcs
+                             else extraSrcs;
+  package = stdenv.mkDerivation (
+    (builtins.removeAttrs args [ "goPackageAliases" "disabled" "extraSrcs"]) // {
+
+    nativeBuildInputs = [ go ]
+      ++ (lib.optional (!dontRenameImports) govers) ++ nativeBuildInputs;
+    buildInputs = buildInputs;
+
+    inherit (go) GOOS GOARCH GO386;
+
+    GOHOSTARCH = go.GOHOSTARCH or null;
+    GOHOSTOS = go.GOHOSTOS or null;
+
+    inherit CGO_ENABLED;
+
+    GO111MODULE = "off";
+    GOFLAGS = lib.optionals (!allowGoReference) [ "-trimpath" ];
+
+    GOARM = toString (lib.intersectLists [(stdenv.hostPlatform.parsed.cpu.version or "")] ["5" "6" "7"]);
+
+    configurePhase = args.configurePhase or ''
+      runHook preConfigure
+
+      # Extract the source
+      cd "$NIX_BUILD_TOP"
+      mkdir -p "go/src/$(dirname "$goPackagePath")"
+      mv "$sourceRoot" "go/src/$goPackagePath"
+
+    '' + lib.optionalString (deleteVendor == true) ''
+      if [ ! -d "go/src/$goPackagePath/vendor" ]; then
+        echo "vendor folder does not exist, 'deleteVendor' is not needed"
+        exit 10
+      else
+        rm -rf "go/src/$goPackagePath/vendor"
+      fi
+    '' + lib.optionalString (goDeps != null) ''
+      if [ -d "go/src/$goPackagePath/vendor" ]; then
+        echo "vendor folder exists, 'goDeps' is not needed"
+        exit 10
+      fi
+    '' + lib.flip lib.concatMapStrings goPath ({ src, goPackagePath }: ''
+      mkdir goPath
+      (cd goPath; unpackFile "${src}")
+      mkdir -p "go/src/$(dirname "${goPackagePath}")"
+      chmod -R u+w goPath/*
+      mv goPath/* "go/src/${goPackagePath}"
+      rmdir goPath
+
+    '') + (lib.optionalString (extraSrcPaths != []) ''
+      ${rsync}/bin/rsync -a ${lib.concatMapStringsSep " " (p: "${p}/src") extraSrcPaths} go
+
+    '') + ''
+      export GOPATH=$NIX_BUILD_TOP/go:$GOPATH
+      export GOCACHE=$TMPDIR/go-cache
+
+      runHook postConfigure
+    '';
+
+    renameImports = args.renameImports or (
+      let
+        inputsWithAliases = lib.filter (x: x ? goPackageAliases)
+          (buildInputs ++ (args.propagatedBuildInputs or [ ]));
+        rename = to: from: "echo Renaming '${from}' to '${to}'; govers -d -m ${from} ${to}";
+        renames = p: lib.concatMapStringsSep "\n" (rename p.goPackagePath) p.goPackageAliases;
+      in lib.concatMapStringsSep "\n" renames inputsWithAliases);
+
+    buildPhase = args.buildPhase or ''
+      runHook preBuild
+
+      runHook renameImports
+
+      exclude='\(/_\|examples\|Godeps\|testdata'
+      if [[ -n "$excludedPackages" ]]; then
+        IFS=' ' read -r -a excludedArr <<<$excludedPackages
+        printf -v excludedAlternates '%s\\|' "''${excludedArr[@]}"
+        excludedAlternates=''${excludedAlternates%\\|} # drop final \| added by printf
+        exclude+='\|'"$excludedAlternates"
+      fi
+      exclude+='\)'
+
+      buildGoDir() {
+        local d; local cmd;
+        cmd="$1"
+        d="$2"
+        . $TMPDIR/buildFlagsArray
+        local OUT
+        if ! OUT="$(go $cmd $buildFlags "''${buildFlagsArray[@]}" ''${tags:+-tags=${lib.concatStringsSep "," tags}} ''${ldflags:+-ldflags="$ldflags"} -v -p $NIX_BUILD_CORES $d 2>&1)"; then
+          if ! echo "$OUT" | grep -qE '(no( buildable| non-test)?|build constraints exclude all) Go (source )?files'; then
+            echo "$OUT" >&2
+            return 1
+          fi
+        fi
+        if [ -n "$OUT" ]; then
+          echo "$OUT" >&2
+        fi
+        return 0
+      }
+
+      getGoDirs() {
+        local type;
+        type="$1"
+        if [ -n "$subPackages" ]; then
+          echo "$subPackages" | sed "s,\(^\| \),\1$goPackagePath/,g"
+        else
+          pushd "$NIX_BUILD_TOP/go/src" >/dev/null
+          find "$goPackagePath" -type f -name \*$type.go -exec dirname {} \; | grep -v "/vendor/" | sort | uniq | grep -v "$exclude"
+          popd >/dev/null
+        fi
+      }
+
+      if (( "''${NIX_DEBUG:-0}" >= 1 )); then
+        buildFlagsArray+=(-x)
+      fi
+
+      if [ ''${#buildFlagsArray[@]} -ne 0 ]; then
+        declare -p buildFlagsArray > $TMPDIR/buildFlagsArray
+      else
+        touch $TMPDIR/buildFlagsArray
+      fi
+      if [ -z "$enableParallelBuilding" ]; then
+          export NIX_BUILD_CORES=1
+      fi
+      for pkg in $(getGoDirs ""); do
+        echo "Building subPackage $pkg"
+        buildGoDir install "$pkg"
+      done
+    '' + lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+      # normalize cross-compiled builds w.r.t. native builds
+      (
+        dir=$NIX_BUILD_TOP/go/bin/${go.GOOS}_${go.GOARCH}
+        if [[ -n "$(shopt -s nullglob; echo $dir/*)" ]]; then
+          mv $dir/* $dir/..
+        fi
+        if [[ -d $dir ]]; then
+          rmdir $dir
+        fi
+      )
+    '' + ''
+      runHook postBuild
+    '';
+
+    doCheck = args.doCheck or false;
+    checkPhase = args.checkPhase or ''
+      runHook preCheck
+
+      for pkg in $(getGoDirs test); do
+        buildGoDir test $checkFlags "$pkg"
+      done
+
+      runHook postCheck
+    '';
+
+    installPhase = args.installPhase or ''
+      runHook preInstall
+
+      mkdir -p $out
+      dir="$NIX_BUILD_TOP/go/bin"
+      [ -e "$dir" ] && cp -r $dir $out
+
+      runHook postInstall
+    '';
+
+    strictDeps = true;
+
+    shellHook = ''
+      d=$(mktemp -d "--suffix=-$name")
+    '' + toString (map (dep: ''
+       mkdir -p "$d/src/$(dirname "${dep.goPackagePath}")"
+       ln -s "${dep.src}" "$d/src/${dep.goPackagePath}"
+    ''
+    ) goPath) + ''
+      export GOPATH=${lib.concatStringsSep ":" ( ["$d"] ++ ["$GOPATH"] ++ ["$PWD"] ++ extraSrcPaths)}
+    '' + shellHook;
+
+    disallowedReferences = lib.optional (!allowGoReference) go
+      ++ lib.optional (!dontRenameImports) govers;
+
+    passthru = passthru //
+      { inherit go; } //
+      lib.optionalAttrs (goPackageAliases != []) { inherit goPackageAliases; };
+
+    enableParallelBuilding = enableParallelBuilding;
+
+    meta = {
+      # Add default meta information
+      homepage = "https://${goPackagePath}";
+      platforms = go.meta.platforms or lib.platforms.all;
+    } // meta;
+  });
+in
+lib.warnIf (buildFlags != "" || buildFlagsArray != "")
+  "Use the `ldflags` and/or `tags` attributes instead of `buildFlags`/`buildFlagsArray`"
+  package

pkgs/development/go-packages/tools/setup-hook.sh

@@ -0,0 +1 @@
+export GOTOOLDIR=@bin@/bin