From 5cbb2ada2e22f95b1dd0cd8ed14643a8cb3766cd Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Wed, 19 Aug 2015 19:58:12 +0100
Subject: Calculate prelude and postlude early

---
 setuptools/command/easy_install.py | 33 +++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)

(limited to 'setuptools/command/easy_install.py')

diff --git a/setuptools/command/easy_install.py b/setuptools/command/easy_install.py
index 0e912156..b6b0cffd 100755
--- a/setuptools/command/easy_install.py
+++ b/setuptools/command/easy_install.py
@@ -1547,25 +1547,26 @@ class PthDistributions(Environment):
 
         self.dirty = False
 
-    def _wrap_lines(self, lines):
-        yield self._inline("""
-            import sys
-            sys.__plen = len(sys.path)
-            """)
+    @classmethod
+    def _wrap_lines(cls, lines):
+        yield cls.prelude
         for line in lines:
             yield line
-        yield self._inline("""
-            import sys
-            new = sys.path[sys.__plen:]
-            del sys.path[sys.__plen:]
-            p = getattr(sys, '__egginsert', 0)
-            sys.path[p:p] = new
-            sys.__egginsert = p + len(new)
-            """)
+        yield cls.postlude
 
-    @staticmethod
-    def _inline(text):
-        return textwrap.dedent(text).strip().replace('\n', '; ')
+    _inline = lambda text: textwrap.dedent(text).strip().replace('\n', '; ')
+    prelude = _inline("""
+        import sys
+        sys.__plen = len(sys.path)
+        """)
+    postlude = _inline("""
+        import sys
+        new = sys.path[sys.__plen:]
+        del sys.path[sys.__plen:]
+        p = getattr(sys, '__egginsert', 0)
+        sys.path[p:p] = new
+        sys.__egginsert = p + len(new)
+        """)
 
     def add(self, dist):
         """Add `dist` to the distribution map"""
-- 
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