diff options
Diffstat (limited to 'src/cmd/go/internal/modload/buildlist.go')
| -rw-r--r-- | src/cmd/go/internal/modload/buildlist.go | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/cmd/go/internal/modload/buildlist.go b/src/cmd/go/internal/modload/buildlist.go index 45f220a6ee..0ed985384d 100644 --- a/src/cmd/go/internal/modload/buildlist.go +++ b/src/cmd/go/internal/modload/buildlist.go @@ -11,10 +11,13 @@ import ( "cmd/go/internal/mvs" "context" "fmt" + "go/build" "os" "strings" + "golang.org/x/mod/modfile" "golang.org/x/mod/module" + "golang.org/x/mod/semver" ) // buildList is the list of modules to use for building packages. @@ -226,6 +229,33 @@ func ReloadBuildList() []module.Version { return capVersionSlice(buildList) } +// CheckTidyVersion reports an error to stderr if the Go version indicated by +// the go.mod file is not supported by this version of the 'go' command. +// +// If allowError is false, such an error terminates the program. +func CheckTidyVersion(ctx context.Context, allowError bool) { + LoadModFile(ctx) + if index.goVersionV == "" { + return + } + + tags := build.Default.ReleaseTags + maxGo := tags[len(tags)-1] + if !strings.HasPrefix(maxGo, "go") || !modfile.GoVersionRE.MatchString(maxGo[2:]) { + base.Fatalf("go: unrecognized go version %q", maxGo) + } + max := maxGo[2:] + + if semver.Compare(index.goVersionV, "v"+max) > 0 { + have := index.goVersionV[1:] + if allowError { + fmt.Fprintf(os.Stderr, "go mod tidy: go.mod file indicates go %s, but maximum supported version is %s\n", have, max) + } else { + base.Fatalf("go mod tidy: go.mod file indicates go %s, but maximum supported version is %s\n", have, max) + } + } +} + // TidyBuildList trims the build list to the minimal requirements needed to // retain the same versions of all packages from the preceding call to // LoadPackages. |