`nupm install --help` shows all submodule help

[NotTheDr01ds]

Might be related to #100, and probably an upstream (Nushell) bug of some sort.

Description

The install help, when accessed via nupm install --help shows help for install, publish, search, etc.

help nupm install shows nu::parser::not_found.

When using std help, it returns std::help::item_not_found on a clean (--no-config-file) launch or:

nupm install --help
Retrieve the theme settings

... which is probably coming from nu-themes.

Steps to reproduce

overlay use nupm --prefix
nupm install --help

Version

0.98.0 Linux and NUPM 0.2.0

[amtoine]

arf, properly defining help for Nushell modules can be painful...

[lyuha]

Nushell 0.101.0 with nupm a39fcce maybe solve this issue.