Dir                       string // (unused)
	ImportPath                string // package path
	GoVersion                 string // minimum required Go version, such as "go1.21.0"
	GoFiles                   []string
	NonGoFiles                []string
	IgnoredFiles              []string
	ImportMap                 map[string]string // maps import path to package path

	// Classify files based on .go extension.
	// srcfiles does not include raw cgo files.
	var gofiles, nongofiles []string
	for _, name := range srcfiles {
		if strings.HasSuffix(name, ".go") {
			gofiles = append(gofiles, name)
		} else {
			nongofiles = append(nongofiles, name)
		}
	}

	ignored := str.StringList(a.Package.IgnoredGoFiles, a.Package.IgnoredOtherFiles)