Special subcommand/options for specific argument value

[OwOchle]

I'm trying to have options only available if one of the positionnal is a certain value.
Example:

javin install java --java-version 21     # All good no problem
javin install gradle --java-version 21 # Error because target is not java, it's gradle

Is there an easy way to do that with Clap other than checking afterwards?

[epage]

So I'm assuming java / gradle is mean to be a positional argument. It sounds like you are wanting to declare a conflict between some argument values and flags.

We have some behavior that allows checks like that (e.g. requires_if) but we don't have one for conflicts. I'm hesitant to expand the API to cover all of the forms of validation people request and am instead looking for ways to make this more flexible. This is being explored in #3476.

[OwOchle]

Alright, I'll keep an eye out for this.