From 5f214c6e238da508b40ea63617c406c4f33ffbff Mon Sep 17 00:00:00 2001
From: Alexander Lyon <arlyon@me.com>
Date: Mon, 3 Oct 2022 11:57:26 +0100
Subject: [PATCH] Add and use python bootstrap toolchain

---
 examples/prelude/.buckconfig             |  5 +++++
 examples/prelude/toolchain/BUILD         |  6 +++---
 examples/prelude/toolchain/toolchain.bzl | 16 ++++++++++++++++
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/examples/prelude/.buckconfig b/examples/prelude/.buckconfig
index 12c9d6c1d1b8..83a5a0223443 100644
--- a/examples/prelude/.buckconfig
+++ b/examples/prelude/.buckconfig
@@ -5,3 +5,8 @@ name=BUILD
 prelude = ./prelude
 toolchains = ./toolchains
 root = .
+platform = no
+buck = no
+fbcode = no
+fbsource = no
+ovr_config = no
diff --git a/examples/prelude/toolchain/BUILD b/examples/prelude/toolchain/BUILD
index 65c914112a8a..8919cf18c923 100644
--- a/examples/prelude/toolchain/BUILD
+++ b/examples/prelude/toolchain/BUILD
@@ -1,5 +1,5 @@
 load(":cxx_hacks.bzl", "cxx_hacks")
-load(":toolchain.bzl", "cxx_toolchain", "python_toolchain")
+load(":toolchain.bzl", "cxx_toolchain", "python_toolchain", "python_bootstrap_toolchain")
 
 # Required to support the $(cxx-header-tree) macro
 cxx_hacks(
@@ -21,7 +21,7 @@ python_toolchain(
 # the bootstrap toolchain is used
 # to poentially initialize other
 # toolchains
-python_toolchain(
+python_bootstrap_toolchain(
     name="python_bootstrap",
     visibility=["PUBLIC"],
-)
\ No newline at end of file
+)
diff --git a/examples/prelude/toolchain/toolchain.bzl b/examples/prelude/toolchain/toolchain.bzl
index 9c254ff62a29..740b1a36613e 100644
--- a/examples/prelude/toolchain/toolchain.bzl
+++ b/examples/prelude/toolchain/toolchain.bzl
@@ -20,6 +20,10 @@ load(
     "PythonPlatformInfo",
     "PythonToolchainInfo",
 )
+load(
+    "@prelude//python_bootstrap:python_bootstrap.bzl",
+    "PythonBootstrapToolchainInfo",
+)
 
 DEFAULT_MAKE_COMP_DB = "prelude//cxx/tools:make_comp_db"
 DEFAULT_MAKE_PEX_INPLACE = "prelude//python/tools:make_pex_inplace"
@@ -130,3 +134,15 @@ python_toolchain = rule(
     },
     is_toolchain_rule = True,
 )
+
+def _python_bootstrap_toolchain(ctx):
+    return [
+        DefaultInfo(),
+        PythonBootstrapToolchainInfo(interpreter="python")
+    ]
+
+python_bootstrap_toolchain = rule(
+    impl = _python_bootstrap_toolchain,
+    attrs = {},
+    is_toolchain_rule = True,
+)