This repo showcases an unfortunate interaction with feature unification and -Zbindeps.

A common dependency (featuredep) is depended upon from two crates. First, bindep, which does not enable feature foo, and second, incorporator, which does. incorporator also depends on bindep as a bin dependency.

When bindep is built without specifying a target, foo is enabled for it. When it is built for any target in particular, same or different, the features are separated as normal.

You can see for yourself:

cargo run -p check-host-target
cargo run -p check-diff-target
cargo run -p check-explicit-target

check-diff-target is only implemented for x64 Windows or Linux, and cannot be used with WSL1.

unrelated is added just for more feature unification noise, so this repo can be used to look at future changes.