Patch libsaw.py to add find_library

This appears to be needed for Windows

recipes/jigsawpy/0001-add-find-library.patch

@@ -0,0 +1,33 @@
+From e0176c73d9e4cb5ead10c075123bc54385ebd148 Mon Sep 17 00:00:00 2001
+From: Xylar Asay-Davis <xylarstorm@gmail.com>
+Date: Fri, 14 Feb 2020 14:06:19 -0700
+Subject: [PATCH] Add call to find_library for Windows
+
+This seems to be necessary, at least for conda-forge CI.
+---
+ jigsawpy/libsaw.py | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/jigsawpy/libsaw.py b/jigsawpy/libsaw.py
+index 278ee7c..94b80ae 100644
+--- a/jigsawpy/libsaw.py
++++ b/jigsawpy/libsaw.py
+@@ -1,5 +1,6 @@
+
+ import ctypes as ct
++import ctypes.util
+ import numpy as np
+ import inspect
+ import platform
+@@ -61,7 +62,7 @@ if (JLIBNAME == Path()):
+ if (JLIBNAME == Path()):
+ #---------------------------- search machine path for binary
+     if   (platform.system() == WIN):
+-        JLIBNAME = Path("jigsaw.dll")
++        JLIBNAME = ctypes.util.find_library("jigsaw.dll")
+
+     elif (platform.system() == LNX):
+         JLIBNAME = Path("libjigsaw.so")
+-- 
+2.23.0
+

recipes/jigsawpy/meta.yaml

@@ -8,6 +8,8 @@ package:
 source:
   url: https://github.com/dengwirda/jigsaw-python/archive/v{{ version }}.tar.gz
   sha256: 36901576cee361d8ee0d2977e9022626b37801f47aebd234f8a008c74557e711
+  patches:
+    - 0001-add-find-library.patch
 
 build:
   noarch: python