disable libmagic on windows; probably closes #276

README.md

@@ -2226,6 +2226,7 @@ force-enable features with known issues on your OS/env  by setting any of the fo
 | env-var                  | what it does |
 | ------------------------ | ------------ |
 | `PRTY_FORCE_MP`          | force-enable multiprocessing (real multithreading) on MacOS and other broken platforms |
+| `PRTY_FORCE_MAGIC`       | use [magic](https://pypi.org/project/python-magic/) on Windows (you will segfault) |
 
 
 # packages

copyparty/util.py

@@ -155,7 +155,9 @@ except:
     HAVE_PSUTIL = False
 
 try:
-    if os.environ.get("PRTY_NO_MAGIC"):
+    if os.environ.get("PRTY_NO_MAGIC") or (
+        ANYWIN and not os.environ.get("PRTY_FORCE_MAGIC")
+    ):
         raise Exception()
 
     import magic