Migrate rules_rust for incompatible_use_platforms_repo_for_constraints

bazelbuild/bazel#8622

docs/index.md

@@ -745,10 +745,10 @@ rust_proto_toolchain(
 toolchain(
     name="rust_proto",
     exec_compatible_with = [
-        "@bazel_tools//platforms:cpuX",
+        "@platforms//cpu:cpuX",
     ],
     target_compatible_with = [
-        "@bazel_tools//platforms:cpuX",
+        "@platforms//cpu:cpuX",
     ],
     toolchain = ":rust_proto_impl",
 )
@@ -1125,10 +1125,10 @@ rust_toolchain(
 toolchain(
   name = "rust_cpuX",
   exec_compatible_with = [
-    "@bazel_tools//platforms:cpuX",
+    "@platforms//cpu:cpuX",
   ],
   target_compatible_with = [
-    "@bazel_tools//platforms:cpuX",
+    "@platforms//cpu:cpuX",
   ],
   toolchain = ":rust_cpuX_impl",
 )

proto/toolchain.bzl

@@ -177,10 +177,10 @@ rust_proto_toolchain(
 toolchain(
     name="rust_proto",
     exec_compatible_with = [
-        "@bazel_tools//platforms:cpuX",
+        "@platforms//cpu:cpuX",
     ],
     target_compatible_with = [
-        "@bazel_tools//platforms:cpuX",
+        "@platforms//cpu:cpuX",
     ],
     toolchain = ":rust_proto_impl",
 )

rust/platform/platform.bzl

@@ -14,13 +14,13 @@ _SUPPORTED_T1_PLATFORM_TRIPLES = [
     "x86_64-pc-windows-gnu",
     "x86_64-unknown-linux-gnu",
     # N.B. These "alternative" envs are not supported, as bazel cannot distinguish between them
-    # and others using existing @bazel_tools//platforms config_values
+    # and others using existing @platforms// config_values
     #
     #"i686-pc-windows-msvc",
     #"x86_64-pc-windows-msvc",
 ]
 
-# Some T2 Platforms are supported, provided we have mappings to @bazel_tools//platforms entries.
+# Some T2 Platforms are supported, provided we have mappings to @platforms// entries.
 # See @io_bazel_rules_rust//rust/platform:triple_mappings.bzl for the complete list.
 _SUPPORTED_T2_PLATFORM_TRIPLES = [
     "aarch64-apple-ios",

rust/platform/triple_mappings.bzl

@@ -1,4 +1,4 @@
-# CPUs that map to a "@bazel_tools//platforms entry
+# CPUs that map to a "@platforms//cpu entry
 _CPU_ARCH_TO_BUILTIN_PLAT_SUFFIX = {
     "x86_64": "x86_64",
     "powerpc": "ppc",
@@ -19,7 +19,7 @@ _CPU_ARCH_TO_BUILTIN_PLAT_SUFFIX = {
     "mipsel": None,
 }
 
-# Systems that map to a "@bazel_tools//platforms entry
+# Systems that map to a "@platforms//os entry
 _SYSTEM_TO_BUILTIN_SYS_SUFFIX = {
     "freebsd": "freebsd",
     "linux": "linux",
@@ -72,7 +72,7 @@ def cpu_arch_to_constraints(cpu_arch):
     if not plat_suffix:
         fail("CPU architecture \"{}\" is not supported by rules_rust".format(cpu_arch))
 
-    return ["@bazel_tools//platforms:{}".format(plat_suffix)]
+    return ["@platforms//cpu:{}".format(plat_suffix)]
 
 def vendor_to_constraints(vendor):
     # TODO(acmcarther): Review:
@@ -87,7 +87,7 @@ def system_to_constraints(system):
     if not sys_suffix:
         fail("System \"{}\" is not supported by rules_rust".format(sys_suffix))
 
-    return ["@bazel_tools//platforms:{}".format(sys_suffix)]
+    return ["@platforms//os:{}".format(sys_suffix)]
 
 def abi_to_constraints(abi):
     # TODO(acmcarther): Implement when C++ toolchain is more mature and we

rust/toolchain.bzl

@@ -96,10 +96,10 @@ rust_toolchain(
 toolchain(
   name = "rust_cpuX",
   exec_compatible_with = [
-    "@bazel_tools//platforms:cpuX",
+    "@platforms//cpu:cpuX",
   ],
   target_compatible_with = [
-    "@bazel_tools//platforms:cpuX",
+    "@platforms//cpu:cpuX",
   ],
   toolchain = ":rust_cpuX_impl",
 )