diff -r 897726622877 -r 6a70cf94d1b5 mercurial/profiling.py
--- a/mercurial/profiling.py	Sun Jan 15 16:33:15 2017 +0900
+++ b/mercurial/profiling.py	Sun Jan 15 13:17:05 2017 +0530
@@ -12,8 +12,8 @@
 
 from .i18n import _
 from . import (
+    encoding,
     error,
-    pycompat,
     util,
 )
 
@@ -120,7 +120,7 @@
     Profiling is active when the context manager is active. When the context
     manager exits, profiling results will be written to the configured output.
     """
-    profiler = pycompat.osgetenv('HGPROF')
+    profiler = encoding.environ.get('HGPROF')
     if profiler is None:
         profiler = ui.config('profiling', 'type', default='stat')
     if profiler not in ('ls', 'stat', 'flame'):