$ cue help login
WARNING: THIS COMMAND IS EXPERIMENTAL.

Log into a CUE registry via the OAuth 2.0 Device Authorization Grant.
Without an argument, CUE_REGISTRY is used if it points to a single registry.

Once the authorization is successful, a token is stored in a logins.json file
inside $CUE_CONFIG_DIR; see 'cue help environment'.

Usage:
  cue login [registry] [flags]

Global Flags:
  -E, --all-errors   print all available errors
  -i, --ignore       proceed in the presence of errors
  -s, --simplify     simplify output
      --strict       report errors for lossy mappings
      --trace        trace computation
  -v, --verbose      print information about progress