Fix fuchsia triple

Author: UebelAndre

rust/platform/platform.bzl

@@ -107,3 +107,15 @@ def declare_config_settings():
             ":nto",
         ],
     )
+
+    native.alias(
+        name = "aarch64-fuchsia",
+        actual = "aarch64-unknown-fuchsia",
+        deprecation = "Use `@rules_rust//rust/platform:aarch64-unknown-fuchsia` instead.",
+    )
+
+    native.alias(
+        name = "x86_64-fuchsia",
+        actual = "x86_64-unknown-fuchsia",
+        deprecation = "Use `@rules_rust//rust/platform:x86_64-unknown-fuchsia` instead.",
+    )

rust/platform/triple.bzl

@@ -24,16 +24,16 @@ def triple(triple):
     if triple in ("wasm32-wasi", "wasm32-wasip1"):
         return struct(
             arch = triple.split("-")[0],
-            system = triple.split("-")[1],
             vendor = triple.split("-")[1],
+            system = triple.split("-")[1],
             abi = None,
             str = triple,
         )
     elif triple in ("aarch64-fuchsia", "x86_64-fuchsia"):
         return struct(
             arch = triple.split("-")[0],
+            vendor = "unknown",
             system = "fuchsia",
-            vendor = "fuchsia",
             abi = None,
             str = triple,
         )

rust/platform/triple_mappings.bzl

@@ -44,7 +44,7 @@ SUPPORTED_T1_PLATFORM_TRIPLES = {
 SUPPORTED_T2_PLATFORM_TRIPLES = {
     "aarch64-apple-ios": _support(std = True, host_tools = False),
     "aarch64-apple-ios-sim": _support(std = True, host_tools = False),
-    "aarch64-fuchsia": _support(std = True, host_tools = False),
+    "aarch64-unknown-fuchsia": _support(std = True, host_tools = False),
     "aarch64-linux-android": _support(std = True, host_tools = False),
     "aarch64-pc-windows-msvc": _support(std = True, host_tools = True),
     "arm-unknown-linux-gnueabi": _support(std = True, host_tools = True),
@@ -61,7 +61,7 @@ SUPPORTED_T2_PLATFORM_TRIPLES = {
     "wasm32-unknown-unknown": _support(std = True, host_tools = False),
     "wasm32-wasi": _support(std = True, host_tools = False),
     "x86_64-apple-ios": _support(std = True, host_tools = False),
-    "x86_64-fuchsia": _support(std = True, host_tools = False),
+    "x86_64-unknown-fuchsia": _support(std = True, host_tools = False),
     "x86_64-linux-android": _support(std = True, host_tools = False),
     "x86_64-unknown-freebsd": _support(std = True, host_tools = True),
     "x86_64-unknown-none": _support(std = True, host_tools = False),

test/unit/platform_triple/platform_triple_test.bzl

@@ -120,14 +120,14 @@ def _construct_known_triples_test_impl(ctx):
     env = unittest.begin(ctx)
 
     _assert_parts(env, triple("aarch64-apple-darwin"), "aarch64", "apple", "darwin", None)
-    _assert_parts(env, triple("aarch64-fuchsia"), "aarch64", "fuchsia", "fuchsia", None)
+    _assert_parts(env, triple("aarch64-fuchsia"), "aarch64", "unknown", "fuchsia", None)
     _assert_parts(env, triple("aarch64-unknown-linux-musl"), "aarch64", "unknown", "linux", "musl")
     _assert_parts(env, triple("thumbv7em-none-eabi"), "thumbv7em", None, "none", "eabi")
     _assert_parts(env, triple("thumbv8m.main-none-eabi"), "thumbv8m.main", None, "none", "eabi")
     _assert_parts(env, triple("wasm32-unknown-unknown"), "wasm32", "unknown", "unknown", None)
     _assert_parts(env, triple("wasm32-wasi"), "wasm32", "wasi", "wasi", None)
     _assert_parts(env, triple("wasm32-wasip1"), "wasm32", "wasip1", "wasip1", None)
-    _assert_parts(env, triple("x86_64-fuchsia"), "x86_64", "fuchsia", "fuchsia", None)
+    _assert_parts(env, triple("x86_64-fuchsia"), "x86_64", "unknown", "fuchsia", None)
 
     return unittest.end(env)