nix-super/src/nix/nix-help.txt

nix [OPTIONS...] [ARGUMENTS...]

Operations:

  --realise / -r: realise a Nix expression
  --delete / -d: delete paths from the Nix store
  --add / -A: copy a path to the Nix store
  --query / -q: query information

  --successor: register a successor expression
  --substitute: register a substitute expression

  --dump: dump a path as a Nix archive
  --restore: restore a path from a Nix archive

  --init: initialise the Nix database
  --verify: verify Nix structures

  --version: output version information
  --help: display help

Query flags:

  --list / -l: query the output paths (roots) of a Nix expression (default)
  --requisites / -R: print all paths necessary to realise expression
  --predecessors: print predecessors of a Nix expression
  --graph: print a dot graph rooted at given ids

Options:

  --verbose / -v: verbose operation (may be repeated)
  --keep-failed / -K: keep temporary directories of failed builds