cargoDoctest

[9999years]

Is your feature request related to a problem? Please describe.

cargo-nextest doesn't support doctests yet (nextest-rs/nextest#16), so you need a separate derivation to run cargo test --doc.

However, cargoTest overwrites the pnameSuffix in the input, so I can't name the derivation my-package-doctest instead of my-package-test, and it's confusing to have that and my-package-nextest being built in tandem.

Describe the solution you'd like
A cargoDoctest function as a shortcut for this behavior.

Describe alternatives you've considered
The ability to override mkCargoDerivation would be nice, but that's a bigger lift.