alexcrichton opened PR #4293 from namespace-features
to main
:
Cargo recently added the ability to have an optional dependency without
implicitly introducing a new named feature on a crate. This is triggered
with some new directives in the[features]
section, specifically:
The
dep:foo
syntax means thatfoo
is activated but no implicit
feature should be added namedfoo
.Additionally
foo?/bar
means that thebar
feature offoo
is only
activated iffoo
is otherwise activated elsewhere, for example a
conditional activation.These two features can help avoid extra feature names showing up that we
don't want (e.g. currently thewasmtime
crate has arayon
feature)
and additionally can help avoid runtime dependencies in niche cases for
us (e.g. activatingall-arch
but disablingcranelift
would
previously pull-in cranelift but no longer will).<!--
Please ensure that the following steps are all taken care of before submitting
the PR.
[ ] This has been discussed in issue #..., or if not, please tell us why
here.[ ] A short description of what this does, why it is needed; if the
description becomes long, the matter should probably be discussed in an issue
first.[ ] This PR contains test cases, if meaningful.
- [ ] A reviewer from the core maintainer team has been assigned for this PR.
If you don't know who could review this, please indicate so. The list of
suggested reviewers on the right can help you.Please ensure all communication adheres to the code of conduct.
-->
alexcrichton has marked PR #4293 as ready for review.
fitzgen submitted PR review.
alexcrichton merged PR #4293.
Last updated: Nov 22 2024 at 16:03 UTC