The Go Landlock library restricts the current processes' ability to use files, using Linux 5.13's Landlock feature. (Package documentation)
For a more low-level interface, please see the landlock/syscall package.
This package used to be located at github.com/gnoack/golandlock.
Please update your import paths to point to
github.com/landlock-lsm/go-landlock/landlock.