From 174e84e0ce297c38aa11f6618c7d0dad7f1a5acf Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Thu, 2 Feb 2017 11:01:37 -0500
Subject: In bootstrap, defer installation of dependencies if unneeded. Ref
 #958.

---
 bootstrap.py | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

(limited to 'bootstrap.py')

diff --git a/bootstrap.py b/bootstrap.py
index 2ca678ff..ad9b067e 100644
--- a/bootstrap.py
+++ b/bootstrap.py
@@ -7,7 +7,6 @@ egg-info command to flesh out the egg-info directory.
 
 from __future__ import unicode_literals
 
-import argparse
 import os
 import io
 import re
@@ -92,16 +91,12 @@ def install_deps():
 
 
 def main():
-    parser = argparse.ArgumentParser(description='bootstrap setuptools')
-    parser.add_argument(
-        '--skip-dep-install', action='store_true',
-        help=("Do not attempt to install setuptools dependencies. These "
-              "should be provided in the environment in another manner."))
-    args = parser.parse_args()
     ensure_egg_info()
-    if args.skip_dep_install:
+    try:
+        # first assume dependencies are present
         run_egg_info()
-    else:
+    except Exception:
+        # but if that fails, try again with dependencies just in time
         with install_deps():
             run_egg_info()
 
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