Squashed 'third_party/rules_rust/' content from commit bf59038ca

git-subtree-dir: third_party/rules_rust
git-subtree-split: bf59038cac11798cbaef9f3bf965bad8182b97fa
Signed-off-by: Brian Silverman <bsilver16384@gmail.com>
Change-Id: I5a20e403203d670df467ea97dde9a4ac40339a8d
diff --git a/rust/platform/os/BUILD.bazel b/rust/platform/os/BUILD.bazel
new file mode 100644
index 0000000..7692abe
--- /dev/null
+++ b/rust/platform/os/BUILD.bazel
@@ -0,0 +1,11 @@
+constraint_value(
+    name = "unknown",
+    constraint_setting = "@platforms//os",
+    visibility = ["//visibility:public"],
+)
+
+constraint_value(
+    name = "wasi",
+    constraint_setting = "@platforms//os",
+    visibility = ["//visibility:public"],
+)