One nice thing about cargo is that it builds all your code together, which means you can pass a unified set of flags to everything. The feature of building ever

One nice thing about cargo is that it builds all your code together, which means you can pass a unified set of flags to everything. The feature of building everything all the time as a whole has a bunch of downsides, many which are mentioned elsewhere, but the specific problem of not being able to build dependencies the way you want isn't one.