feature foo needs feature bar

[LuckyTurtleDev]

I have a feature foo which required also feature bar to be enabled.
It looks like this can not be tested with cargo-all-feautures currently.

At the moment you can skip all combination of feature

skip_feature_sets = [
    ["foo", "bar"],
]

But I can not do something like this:

skip_feature_sets = [
    ["foo", "!bar"],
]

Alternative a new deps field can be added:

[[deps]]
  feature = "foo"
  needs = ["bar"]

[demmerichs]

You can do this already by specifying this dependency in the feature section of Cargo.toml, e.g.

[features]
foo = ["bar"]
bar = []

In the construction of the feature set matrix, this dependency is currently not taken into account (see discussion in #25), and the sets [foo] and [foo, bar] will both be tested even though the activated features in both cases are the same because of the feature dependency that cargo resolves before actually testing/building.

If you want this dependency not for your crate, but only for the testing matrix, then this is currently not possible, but I am working on a PR that will add more flexibility of restricting the feature matrix.

[demmerichs]

I created now the PR #50, which would allow to specify this dependency only for the purpose of testing:

[package.metadata.cargo-all-features]
rules = [
    "bar => foo"
]

See README in that PR for more details on this feature.