Fix the patch_tool annotation. (#2404)
It was documented incorrectly as a list, but the parameter is actually
an Option<String> in the rust code
(https://github.com/bazelbuild/rules_rust/blob/a1e9f9600cd22ecfdd08fc4a7572ccbdeba97395/crate_universe/src/metadata/metadata_annotation.rs#L152)
diff --git a/crate_universe/extension.bzl b/crate_universe/extension.bzl
index da65051..46bb70c 100644
--- a/crate_universe/extension.bzl
+++ b/crate_universe/extension.bzl
@@ -279,7 +279,7 @@
default = "auto",
),
patch_args = attr.string_list(doc = "The `patch_args` attribute of a Bazel repository rule. See [http_archive.patch_args](https://docs.bazel.build/versions/main/repo/http.html#http_archive-patch_args)"),
- patch_tool = attr.string_list(doc = "The `patch_tool` attribute of a Bazel repository rule. See [http_archive.patch_tool](https://docs.bazel.build/versions/main/repo/http.html#http_archive-patch_tool)"),
+ patch_tool = attr.string(doc = "The `patch_tool` attribute of a Bazel repository rule. See [http_archive.patch_tool](https://docs.bazel.build/versions/main/repo/http.html#http_archive-patch_tool)"),
patches = attr.label_list(doc = "The `patches` attribute of a Bazel repository rule. See [http_archive.patches](https://docs.bazel.build/versions/main/repo/http.html#http_archive-patches)"),
proc_macro_deps = _relative_label_list(doc = "A list of labels to add to a crate's `rust_library::proc_macro_deps` attribute."),
rustc_env = attr.string_dict(doc = "Additional variables to set on a crate's `rust_library::rustc_env` attribute."),
diff --git a/crate_universe/private/crate.bzl b/crate_universe/private/crate.bzl
index 349b0df..9d1b5a9 100644
--- a/crate_universe/private/crate.bzl
+++ b/crate_universe/private/crate.bzl
@@ -154,7 +154,7 @@
`cargo_build_script` targets for the current crate.
patch_args (list, optional): The `patch_args` attribute of a Bazel repository rule. See
[http_archive.patch_args](https://docs.bazel.build/versions/main/repo/http.html#http_archive-patch_args)
- patch_tool (list, optional): The `patch_tool` attribute of a Bazel repository rule. See
+ patch_tool (string, optional): The `patch_tool` attribute of a Bazel repository rule. See
[http_archive.patch_tool](https://docs.bazel.build/versions/main/repo/http.html#http_archive-patch_tool)
patches (list, optional): The `patches` attribute of a Bazel repository rule. See
[http_archive.patches](https://docs.bazel.build/versions/main/repo/http.html#http_archive-patches)
