Initial commit I guess

toolchains/BUCK

@@ -0,0 +1,20 @@
+load("@prelude//toolchains:cxx.bzl", "system_cxx_toolchain")
+load("@prelude//toolchains:python.bzl", "system_python_bootstrap_toolchain")
+
+# Ugh.
+system_cxx_toolchain(
+    name = "cxx",
+    visibility = ["PUBLIC"],
+
+    compiler = "gcc",
+    compiler_type = "gcc",
+    cxx_compiler = "g++",
+    rc_compiler = None,
+    cvtres_compiler = None,
+    linker = "g++",
+)
+
+system_python_bootstrap_toolchain(
+    name = "python_bootstrap",
+    visibility = ["PUBLIC"],
+)

toolchains/tools.bzl

@@ -0,0 +1,25 @@
+load("@prelude//cxx:cxx_toolchain_types.bzl", "LinkerType")
+load("@prelude//toolchains:cxx.bzl", "CxxToolsInfo")
+
+def _path_gcc_tools_impl(_ctx) -> list[Provider]:
+    return [
+        DefaultInfo(),
+        CxxToolsInfo(
+            compiler = "gcc",
+            compiler_type = "gcc",
+            cxx_compiler = "g++",
+            asm_compiler = "gcc",
+            asm_compiler_type = "gcc",
+            rc_compiler = None,
+            cvtres_compiler = None,
+            archiver = "ar",
+            archiver_type = "gnu",
+            linker = "g++",
+            linker_type = LinkerType("gnu"),
+        ),
+    ]
+
+path_gcc_tools = rule(
+    impl = _path_gcc_tools_impl,
+    attrs = {},
+)