gotools/go/packages/external.go

type DriverRequest …

type DriverResponse …

type driver …

// findExternalDriver returns the file path of a tool that supplies
// the build system package structure, or "" if not found.
// If GOPACKAGESDRIVER is set in the environment findExternalTool returns its
// value, otherwise it searches for a binary named gopackagesdriver on the PATH.
func findExternalDriver(cfg *Config) driver { … }

// slicesClip removes unused capacity from the slice, returning s[:len(s):len(s)].
// TODO(adonovan): use go1.21 slices.Clip.
func slicesClip[S ~[]E, E any](s S) S { … }