Use pyterminalsize for terminal sizing

pre_commit/output.py

@@ -1,29 +1,14 @@
 from __future__ import unicode_literals
 
-import os
-import subprocess
 import sys
 
-from backports.shutil_get_terminal_size import get_terminal_size
+from pyterminalsize import get_terminal_size
 
 from pre_commit import color
 from pre_commit import five
 
 
-def _get_cols_from_tput():  # pragma: no cover (fallback)
-    if not os.environ.get('TERM'):
-        return 80
-    else:
-        return int(
-            subprocess.Popen(
-                ('tput', 'cols'), stdout=subprocess.PIPE,
-            ).communicate()[0] or
-            # Default in the case of no terminal
-            80
-        )
-
-
-COLS = get_terminal_size((0, 0)).columns or _get_cols_from_tput()
+COLS = get_terminal_size((80, 0)).columns
 
 
 def get_hook_message(

setup.py

@@ -41,11 +41,11 @@ setup(
     install_requires=[
         'argparse',
         'aspy.yaml',
-        'backports.shutil_get_terminal_size',
         'cached-property',
         'jsonschema',
         'nodeenv>=0.11.1',
         'ordereddict',
+        'pyterminalsize',
         'pyyaml',
         'virtualenv',
     ],