don't fork with windows

recipe/meta.yaml

@@ -9,7 +9,8 @@ source:
   sha256: 39f33cbfa7408fad08c01a46fa4d7c50b6b17b37f1d0a5bc7efbdd8128dab4ec
   patches:
     # backport huggingface/tokenizers#650
-    - patches/0001-Upgrade-pyo3-to-0.15.patch  # [build_platform != target_platform]
+    - patches/0001-Upgrade-pyo3-to-0.15.patch                      # [build_platform != target_platform]
+    - patches/0002-don-t-try-to-use-fork-context-on-windows.patch  # [win]
 
 build:
   number: 1

recipe/patches/0001-Upgrade-pyo3-to-0.15.patch

@@ -1,7 +1,7 @@
 From 3ee2156e974f2299b2dbd879d40050b9f2e50500 Mon Sep 17 00:00:00 2001
 From: messense <[email protected]>
 Date: Wed, 10 Mar 2021 10:45:50 +0800
-Subject: [PATCH] Upgrade pyo3 to 0.15
+Subject: [PATCH 1/2] Upgrade pyo3 to 0.15
 
 Rebased-By: H. Vetinari <[email protected]>
 ---

recipe/patches/0002-don-t-try-to-use-fork-context-on-windows.patch

@@ -0,0 +1,25 @@
+From 94425df68f5c232b7ac2edd9f7a368a628916e1c Mon Sep 17 00:00:00 2001
+From: "H. Vetinari" <[email protected]>
+Date: Mon, 21 Mar 2022 21:02:14 +1100
+Subject: [PATCH 2/2] don't try to use fork context on windows
+
+---
+ bindings/python/tests/utils.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/bindings/python/tests/utils.py b/bindings/python/tests/utils.py
+index b2b028d..40a4722 100644
+--- a/bindings/python/tests/utils.py
++++ b/bindings/python/tests/utils.py
+@@ -99,7 +99,7 @@ def doc_pipeline_bert_tokenizer(data_dir):
+
+
+ # On MacOS Python 3.8+ the default was modified to `spawn`, we need `fork` in tests.
+-mp.set_start_method("fork")
++# mp.set_start_method("fork")
+
+
+ def multiprocessing_with_parallelism(tokenizer, enabled: bool):
+-- 
+2.35.1.windows.2
+