diff options
Diffstat (limited to 'nix-repl.cc')
| -rw-r--r-- | nix-repl.cc | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/nix-repl.cc b/nix-repl.cc index 1077f5d8f616..1b098405fc82 100644 --- a/nix-repl.cc +++ b/nix-repl.cc @@ -59,8 +59,35 @@ struct NixRepl void printHelp() { - std::cout << "Usage: nix-repl [--help|--version]"; - std::cout << std::endl; + cout << "Usage: nix-repl [--help] [--version] [-I path] paths...\n" + << "\n" + << "nix-repl is a simple read-eval-print loop (REPL) for the Nix package manager.\n" + << "\n" + << "Options:\n" + << " --help\n" + << " Prints out a summary of the command syntax and exits.\n" + << "\n" + << " --version\n" + << " Prints out the Nix version number on standard output and exits.\n" + << "\n" + << " -I path\n" + << " Add a path to the Nix expression search path. This option may be given\n" + << " multiple times. See the NIX_PATH environment variable for information on\n" + << " the semantics of the Nix search path. Paths added through -I take\n" + << " precedence over NIX_PATH.\n" + << "\n" + << " paths...\n" + << " A list of paths to files containing Nix expressions which nix-repl will\n" + << " load and add to its scope.\n" + << "\n" + << " A path surrounded in < and > will be looked up in the Nix expression search\n" + << " path, as in the Nix language itself.\n" + << "\n" + << " If an element of paths starts with http:// or https://, it is interpreted\n" + << " as the URL of a tarball that will be downloaded and unpacked to a temporary\n" + << " location. The tarball must include a single top-level directory containing\n" + << " at least a file named default.nix.\n" + << flush; } |