stdPackages = append(stdPackages, ip)
			}
			importDir[pkg.ImportPath] = pkg.Dir
			if len(pkg.ImportMap) > 0 {
				importMap[pkg.Dir] = make(map[string]string, len(pkg.ImportMap))
			}
			for k, v := range pkg.ImportMap {
				importMap[pkg.Dir][k] = v
			}
		}

		sort.Strings(stdPackages)
		imports = listImports{
			stdPackages: stdPackages,
			importMap:   importMap,