env GO111MODULE=on
! go build
stderr ' type alias requires'
go mod edit -go=1.9
grep 'go 1.9' go.mod
go build

# Reverting the version should force a rebuild and error instead of using
# the cached 1.9 build. (https://golang.org/issue/37804)
go mod edit -go=1.8
! go build
stderr 'type alias requires'

# go=none should drop the line
go mod edit -go=none
! grep go go.mod

If you get a message like `cannot use path@version syntax in GOPATH mode`,
you likely do not have go modules enabled.  This should be on by default in all
supported versions of Go.

```sh
export GO111MODULE=on
```

Ensure your project has a `go.mod` file defined at the root of your project.
If you do not already have one, `go mod init` will create one for you:

```sh
go mod init

go mod vendor
cmp vendor/example.com/a/samedir_embed.txt a/samedir_embed.txt
cmp vendor/example.com/a/subdir/embed.txt a/subdir/embed.txt
cmp vendor/example.com/a/subdir/test/embed.txt a/subdir/test/embed.txt
cmp vendor/example.com/a/subdir/test/xtest/embed.txt a/subdir/test/xtest/embed.txt

cd broken_no_matching_files
! go mod vendor
stderr '^go: resolving embeds in example.com/brokendep: pattern foo.txt: no matching files found$'
go mod vendor -e

    - name: Check out code into the Go module directory
      uses: actions/checkout@v4

    - name: go mod package cache
      uses: actions/cache@v4
      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ matrix.go }}-${{ hashFiles('tests/go.mod') }}

    - name: Tests
      run: GITHUB_ACTION=true GORM_DIALECT=sqlite ./tests/tests_all.sh

  mysql:
    strategy:

version prior to the one indicated by the 'go' directive in the go.mod
file.

The -x flag causes tidy to print the commands download executes.

See https://golang.org/ref/mod#go-mod-tidy for more about 'go mod tidy'.
	`,
	Run: runTidy,
}

var (
	tidyE      bool          // if true, report errors but proceed anyway.
	tidyDiff   bool          // if true, do not update go.mod or go.sum and show changes. Return corresponding exit code.

		return nil, maxTooNew
	}

	for _, pm := range pkgMods {
		pkg, mod := pm.pkg, *pm.mod
		if mod.Path == "" {
			continue
		}

		fmt.Fprintf(os.Stderr, "go: found %s in %s %s\n", pkg.path, mod.Path, mod.Version)
		if modAddedBy[mod] == nil {
			modAddedBy[mod] = pkg
		}
	}

	return modAddedBy, nil
}

// FromGoMod returns the go version from the go.mod file.
// It returns DefaultGoModVersion if the go.mod file does not contain a go line or if mf is nil.
func FromGoMod(mf *modfile.File) string {
	if mf == nil || mf.Go == nil {
		return DefaultGoModVersion
	}
	return mf.Go.Version
}

// FromGoWork returns the go version from the go.mod file.
// It returns DefaultGoWorkVersion if the go.mod file does not contain a go line or if wf is nil.

  kube::log::error "Cannot run hack/update-internal-modules.sh with \$GOPROXY=off"
  exit 1
fi

kube::golang::setup_env

for mod in "${MODULES[@]}"; do
  echo "=== tidying go.mod/go.sum in ${mod}"
  go -C "${KUBE_ROOT}/${mod}" mod edit -fmt
  go -C "${KUBE_ROOT}/${mod}" mod tidy

	"GCCGOTOOLDIR",       // for gccgo testing
}

// updateSum runs 'go mod tidy', 'go list -mod=mod -m all', or
// 'go list -mod=mod all' in the test's current directory if a file named
// "go.mod" is present after the archive has been extracted. updateSum modifies
// archive and returns true if go.mod or go.sum were changed.

  exit 1
fi

kube::golang::setup_env
kube::util::require-jq

# Explicitly set GOFLAGS to ignore vendor, since GOFLAGS=-mod=vendor breaks dependency resolution while rebuilding vendor
export GOWORK=off
export GOFLAGS=-mod=mod

dep="${1:-}"
sha="${2:-}"

# Specifying a different repo is optional.
replacement=
case ${dep} in
    *=*)
        # shellcheck disable=SC2001