1 files changed, 0 insertions, 186 deletions
diff --git a/overrides/buildGo/external/main.go b/overrides/buildGo/external/main.go
deleted file mode 100644
index aa4a813d32..0000000000
--- a/overrides/buildGo/external/main.go
+++ /dev/null
@@ -1,186 +0,0 @@
-// Copyright 2019 Google LLC.
-// SPDX-License-Identifier: Apache-2.0
-
-// This tool analyses external (i.e. not built with `buildGo.nix`) Go
-// packages to determine a build plan that Nix can import.
-package main
-
-import (
-	"encoding/json"
-	"flag"
-	"fmt"
-	"go/build"
-	"io/ioutil"
-	"log"
-	"os"
-	"path"
-	"path/filepath"
-	"strings"
-)
-
-// Path to a JSON file describing all standard library import paths.
-// This file is generated and set here by Nix during the build
-// process.
-var stdlibList string
-
-// pkg describes a single Go package within the specified source
-// directory.
-//
-// Return information includes the local (relative from project root)
-// and external (none-stdlib) dependencies of this package.
-type pkg struct {
-	Name        string     `json:"name"`
-	Locator     []string   `json:"locator"`
-	Files       []string   `json:"files"`
-	SFiles      []string   `json:"sfiles"`
-	LocalDeps   [][]string `json:"localDeps"`
-	ForeignDeps []string   `json:"foreignDeps"`
-	IsCommand   bool       `json:"isCommand"`
-}
-
-// findGoDirs returns a filepath.WalkFunc that identifies all
-// directories that contain Go source code in a certain tree.
-func findGoDirs(at string) ([]string, error) {
-	dirSet := make(map[string]bool)
-
-	err := filepath.Walk(at, func(path string, info os.FileInfo, err error) error {
-		name := info.Name()
-		// Skip folders that are guaranteed to not be relevant
-		if info.IsDir() && (name == "testdata" || name == ".git") {
-			return filepath.SkipDir
-		}
-
-		// If the current file is a Go file, then the directory is popped
-		// (i.e. marked as a Go directory).
-		if !info.IsDir() && strings.HasSuffix(name, ".go") && !strings.HasSuffix(name, "_test.go") {
-			dirSet[filepath.Dir(path)] = true
-		}
-
-		return nil
-	})
-
-	if err != nil {
-		return nil, err
-	}
-
-	goDirs := []string{}
-	for k, _ := range dirSet {
-		goDirs = append(goDirs, k)
-	}
-
-	return goDirs, nil
-}
-
-// analysePackage loads and analyses the imports of a single Go
-// package, returning the data that is required by the Nix code to
-// generate a derivation for this package.
-func analysePackage(root, source, importpath string, stdlib map[string]bool) (pkg, error) {
-	ctx := build.Default
-	ctx.CgoEnabled = false
-
-	p, err := ctx.ImportDir(source, build.IgnoreVendor)
-	if err != nil {
-		return pkg{}, err
-	}
-
-	local := [][]string{}
-	foreign := []string{}
-
-	for _, i := range p.Imports {
-		if stdlib[i] {
-			continue
-		}
-
-		if i == importpath {
-			local = append(local, []string{})
-		} else if strings.HasPrefix(i, importpath) {
-			local = append(local, strings.Split(strings.TrimPrefix(i, importpath+"/"), "/"))
-		} else {
-			foreign = append(foreign, i)
-		}
-	}
-
-	prefix := strings.TrimPrefix(source, root+"/")
-
-	locator := []string{}
-	if len(prefix) != len(source) {
-		locator = strings.Split(prefix, "/")
-	} else {
-		// Otherwise, the locator is empty since its the root package and
-		// no prefix should be added to files.
-		prefix = ""
-	}
-
-	files := []string{}
-	for _, f := range p.GoFiles {
-		files = append(files, path.Join(prefix, f))
-	}
-
-	sfiles := []string{}
-	for _, f := range p.SFiles {
-		sfiles = append(sfiles, path.Join(prefix, f))
-	}
-
-	return pkg{
-		Name:        path.Join(importpath, prefix),
-		Locator:     locator,
-		Files:       files,
-		SFiles:      sfiles,
-		LocalDeps:   local,
-		ForeignDeps: foreign,
-		IsCommand:   p.IsCommand(),
-	}, nil
-}
-
-func loadStdlibPkgs(from string) (pkgs map[string]bool, err error) {
-	f, err := ioutil.ReadFile(from)
-	if err != nil {
-		return
-	}
-
-	err = json.Unmarshal(f, &pkgs)
-	return
-}
-
-func main() {
-	source := flag.String("source", "", "path to directory with sources to process")
-	path := flag.String("path", "", "import path for the package")
-
-	flag.Parse()
-
-	if *source == "" {
-		log.Fatalf("-source flag must be specified")
-	}
-
-	stdlibPkgs, err := loadStdlibPkgs(stdlibList)
-	if err != nil {
-		log.Fatalf("failed to load standard library index from %q: %s\n", stdlibList, err)
-	}
-
-	goDirs, err := findGoDirs(*source)
-	if err != nil {
-		log.Fatalf("failed to walk source directory '%s': %s\n", source, err)
-	}
-
-	all := []pkg{}
-	for _, d := range goDirs {
-		analysed, err := analysePackage(*source, d, *path, stdlibPkgs)
-
-		// If the Go source analysis returned "no buildable Go files",
-		// that directory should be skipped.
-		//
-		// This might be due to `+build` flags on the platform and other
-		// reasons (such as test files).
-		if _, ok := err.(*build.NoGoError); ok {
-			continue
-		}
-
-		if err != nil {
-			log.Fatalf("failed to analyse package at %q: %s", d, err)
-		}
-		all = append(all, analysed)
-	}
-
-	j, _ := json.Marshal(all)
-	fmt.Println(string(j))
-}