Status

This project is now archived since go1.20 is out and allows usage of errors.Join

migrating is as simple as switching multierror.Append to errors.Join

multierror

a simple package for handling horizontal errors as opposed to veritical (fmt.Errorf %w error wrapping)

Usage example from goreinstall:

func getGoBinaryInfo(ctx context.Context, path string) (info *buildinfo.BuildInfo, err error) {
  ...
  defer func() {
    if err2 := f.Close(); err2 != nil {
      err = multierror.Append(err, fmt.Errorf("file could not be closed due to error (%w)", err2))
    }
  }()
  ...
}