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-rw-r--r--tox/_config.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/tox/_config.py b/tox/_config.py
index a778b11..ee450d8 100644
--- a/tox/_config.py
+++ b/tox/_config.py
@@ -106,7 +106,8 @@ def prepare_parse(pkgname):
help="set indexserver url (if URL is of form name=url set the "
"url for the 'name' indexserver, specifically)")
parser.add_argument("--pre", action="store_true", dest="pre",
- help="pass --pre option to install_command")
+ help="install pre-releases and development versions of dependencies. "
+ "This will pass the --pre option to install_command (pip by default).")
parser.add_argument("-r", "--recreate", action="store_true",
dest="recreate",
help="force recreation of virtual environments")