tests: fix #1754

dvc/__init__.py

@@ -57,6 +57,7 @@ if os.path.exists(os.path.join(HOMEPATH, "setup.py")):
     if (
         os.getenv("APPVEYOR_REPO_TAG", "").lower() != "true"
         and os.getenv("TRAVIS_TAG", "") == ""
+        and os.getenv("DVC_TEST", "").lower() != "true"
     ):
         __version__ = _update_version_file()
     else:  # pragma: no cover

tests/test_install.py

@@ -1,10 +1,15 @@
 import os
+import sys
+import unittest
 
 from dvc.main import main
 
 from tests.basic_env import TestDvc
 
 
+@unittest.skipIf(
+    sys.platform == "win32", "Git hooks aren't supported on Windows"
+)
 class TestInstall(TestDvc):
     def test(self):
         ret = main(["install"])