Stop using xxhash on windows #916

setup.py

@@ -99,8 +99,6 @@
           'fasteners',
           'pyyaml',
           'pygments',
-          # faster hashlib
-          'xxhash',
           # for DAG, some version requires pydot, some requires pydotplus
           'networkx',
           'pydot',
@@ -200,6 +198,8 @@
 #vim-syntax.func = sos.install:install_vim_syntax
     extras_require = {
         ':sys_platform=="win32"': ['colorama'],
+          # faster hashlib
+        ':sys_platform!="win32"': ['xxhash'],
         'dot':      ['graphviz'],
     }
 )

src/sos/targets.py

@@ -21,7 +21,6 @@
 #
 import os
 import sys
-import xxhash
 import shlex
 import shutil
 import fasteners
@@ -30,6 +29,10 @@
 from shlex import quote
 import subprocess
 from pathlib import Path, WindowsPath, PosixPath
+try:
+    from xxhash import xxh64 as hash_md5
+except ImportError:
+    from hashlib import md5 as hash_md5
 
 from collections.abc import Sequence, Iterable
 
@@ -65,7 +68,7 @@ def __init__(self, signature):
 #
 def textMD5(text):
     '''Get md5 of a piece of text'''
-    m = xxhash.xxh64()
+    m = hash_md5()
     if isinstance(text, str):
         m.update(text.encode())
     else:
@@ -79,7 +82,7 @@ def fileMD5(filename, partial=True):
     when dealing with large bioinformat ics datasets. '''
     filesize = os.path.getsize(filename)
     # calculate md5 for specified file
-    md5 = xxhash.xxh64()
+    md5 = hash_md5()
     block_size = 2**20  # buffer of 1M
     try:
         # 2**24 = 16M