man nix eval doesn't output the proper nix eval manpage

[quatquatt]

Describe the bug

When running the command man nix eval, only the manpage for the nix command comes up. When exiting the nix manpage, it says No manual entry for eval. The proper manpage does pop up for other nix3 commands, such as man nix develop, and man nix build.

There is an existing nix eval manpage, which pops up when running nix eval --help. I think the page just isn't visible to man for some reason.

nix-env --version output
nix-env (Nix) 2.24.8
Additional context

I also reproduced this on 2.18.8.

Priorities

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