# Regression test for Issue #54908. When running a go install module@version
# with --mod=readonly moduleInfo was not setting the GoVersion for the module
# because the checksumOk function was failing because modfetch.GoSumFile
# was not set when running outside of a module.

env GOTOOLCHAIN=local

cmpenv go.work $WORK/go.work.want

-- go.mod --
module example
go 1.18
-- dir/go.mod --
module example
go 1.18
-- dir/foo/bar/go.mod --
module example
go 1.18
-- $WORK/go.work.want --
go $goversion

use (
	.
	..
	./foo/bar

			}
		}
		if summary.goVersion != "" && gover.Compare(summary.goVersion, gover.GoStrictVersion) >= 0 {
			if gover.Compare(summary.goVersion, gover.Local()) > 0 {
				return nil, &gover.TooNewError{What: "module " + m.String(), GoVersion: summary.goVersion}
			}
			summary.require = append(summary.require, module.Version{Path: "go", Version: summary.goVersion})
		}
		if len(f.Retract) > 0 {

// license that can be found in the LICENSE file.

//go:build !go1.21

package cgocall

import "go/types"

func setGoVersion(tc *types.Config, pkg *types.Package) {
	// no types.Package.GoVersion until Go 1.21

		return mainMod, false, nil
	}
	// Check 1.14's automatic vendor mode.
	if fi, err := os.Stat(filepath.Join(mainMod.Dir, "vendor")); err == nil && fi.IsDir() {
		if mainMod.GoVersion != "" && semver.Compare("v"+mainMod.GoVersion, "v1.14") >= 0 {
			// The Go version is at least 1.14, and a vendor directory exists.
			// Set -mod=vendor by default.
			return mainMod, true, nil
		}
	}
	return mainMod, false, nil
}

var buildtagFix = fix{
	name: "buildtag",
	date: "2021-08-25",
	f:    buildtag,
	desc: `Remove +build comments from modules using Go 1.18 or later`,
}

func buildtag(f *ast.File) bool {
	if version.Compare(*goVersion, buildtagGoVersionCutoff) < 0 {
		return false
	}

	// File is already gofmt-ed, so we know that if there are +build lines,
	// they are in a comment group that starts with a //go:build line followed

	// since at that time the go directive wasn't clearly
	// specified as a toolchain requirement.
	//
	// TODO(adonovan): after go1.21, call GoVersion directly.
	pkgVersion := any(pass.Pkg).(interface{ GoVersion() string }).GoVersion()
	if !versions.AtLeast(pkgVersion, "go1.21") {
		return nil, nil
	}

	// disallowedSymbols returns the set of standard library symbols

	// determine Go version for each file
	for _, file := range check.files {
		// use unaltered Config.GoVersion by default
		// (This version string may contain dot-release numbers as in go1.20.1,
		// unlike file versions which are Go language versions only, if valid.)
		v := check.conf.GoVersion

		fileVersion := asGoVersion(file.GoVersion)
		if fileVersion.isValid() {
			// use the file version, if applicable

	example.com/testdep v0.1.0 => ./testdep
)
-- go.mod.untidy --
module example.com/m

go $goversion

require example.com/dep v0.1.0

require example.com/testdep v0.1.0 // indirect

replace (
	example.com/dep v0.1.0 => ./dep
	example.com/testdep v0.1.0 => ./testdep
)
-- go.mod.tidy --
module example.com/m

go $goversion

require example.com/dep v0.1.0

replace (
	example.com/dep v0.1.0 => ./dep

		compatVersion := ld.TidyCompatibleVersion
		goVersion := ld.requirements.GoVersion()
		if compatVersion == "" {
			if gover.Compare(goVersion, gover.GoStrictVersion) < 0 {
				compatVersion = gover.Prev(goVersion)
			} else {
				// Starting at GoStrictVersion, we no longer maintain compatibility with
				// versions older than what is listed in the go.mod file.
				compatVersion = goVersion
			}
		}