Problem

I can't see if there's a difference between the nix-daemon and nix daemon command.
The current documentation of both looks quite similar, but it doesn't seem both accept the same flags.
E.g. I can pass --stdio to nix-daemon, but not to nix daemon.

$ # Just waits for connections, or user interrupt
$ nix-daemon --stdin

$ nix daemon --stdio
error: unrecognised flag '--stdio'
Try 'nix --help' for more information.

Proposal

Clarify which flags both command accept, and what their intended use-cases are.

Checklist

• checked latest Nix manual (source)
• checked open documentation issues and pull requests for possible duplicates

Priorities

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Ref #7128