Arbitrary cargo build arguments

[mightyiam]

Is there a way to pass arbitrary cargo build arguments, such as --deny-warnings, please?

[yusdacra]

You can use testFlags or buildFlags to pass arbitrary arguments to cargo, just use those under mkDerivation in drvConfig and depsDrvConfig

[mightyiam]

Thank you. testFlags doesn't seem to exist. buildFlags doesn't seem to apply.

Where are these defined, please?

[yusdacra]

Sorry, I mixed up some of the options, you have to define rust-crane.testFlags and rust-crane.buildFlags under drvConfig and depsDrvConfig. The drvConfig are passed to dream2nix as is basically, and in dream2nix it's configured through rust-crane.

[mightyiam]

And I apologize. There's no such cargo argument --deny-warnings. There's cargo clippy -- --deny warnings. And there's RUSTFLAGS="--deny warnings" which seems to affect most cargo commands, but not cargo doc. For that, one needs RUSTDOCFLAGS with the same value. So, I will mark this an answered.