bring metadata from bevy

Cargo.toml

@@ -53,6 +53,16 @@ unsafe_code = "deny"
 unsafe_op_in_unsafe_fn = "warn"
 unused_qualifications = "warn"
 
+[package.metadata.docs.rs]
+# This cfg is needed so that #[doc(fake_variadic)] is correctly propagated for
+# impls for re-exported traits. See https://github.com/rust-lang/cargo/issues/8811
+# for details on why this is needed. Since dependencies don't expect to be built
+# with `--cfg docsrs` (and thus fail to compile), we use a different cfg.
+rustc-args = ["--cfg", "docsrs_dep"]
+rustdoc-args = ["-Zunstable-options", "--generate-link-to-definition"]
+all-features = true
+cargo-args = ["-Zunstable-options", "-Zrustdoc-scrape-examples"]
+
 # Examples
 
 [[example]]