--- a/tests/hghave	Sun May 01 15:21:57 2011 +0200
+++ b/tests/hghave	Sun May 01 15:22:30 2011 +0200
@@ -172,6 +172,11 @@
     finally:
         os.rmdir(d)
 
+def has_pyflakes():
+    return matchoutput('echo "import re" 2>&1 | pyflakes',
+                       r"<stdin>:1: 're' imported but unused",
+                       True)
+
 def has_pygments():
     try:
         import pygments
@@ -210,6 +215,7 @@
     "mtn": (has_mtn, "monotone client (> 0.31)"),
     "outer-repo": (has_outer_repo, "outer repo"),
     "p4": (has_p4, "Perforce server and client"),
+    "pyflakes": (has_pyflakes, "Pyflakes python linter"),
     "pygments": (has_pygments, "Pygments source highlighting library"),
     "ssl": (has_ssl, "python >= 2.6 ssl module and python OpenSSL"),
     "svn": (has_svn, "subversion client and admin tools"),