//go:build !plan9 package flock import ( "errors" "github.com/gofrs/flock" ) var ( CouldntAcquire = errors.New("Couldn't acquire flock (is another Ergo running?)") ) func TryAcquireFlock(path string) (fl Flocker, err error) { f := flock.New(path) success, err := f.TryLock() if err != nil { return nil, err } else if !success { return nil, CouldntAcquire } return f, nil }