Allow most commands to work with an existing .egg-info directory w/a '-'

in it, but warn about it and refuse to run "develop" until the existing
directory is renamed.  This should allow older source distributions and
checkouts to keep working with 0.6a9.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041857

setuptools/command/develop.py

@@ -2,6 +2,7 @@ from setuptools.command.easy_install import easy_install
 from distutils.util import convert_path
 from pkg_resources import Distribution, PathMetadata, normalize_path
 from distutils import log
+from distutils.errors import *
 import sys, os
 
 class develop(easy_install):
@@ -38,11 +39,14 @@ class develop(easy_install):
 
 
 
-
     def finalize_options(self):
         ei = self.get_finalized_command("egg_info")
-        self.args = [ei.egg_name]
-        
+        if ei.broken_egg_info:
+            raise DistutilsError(
+            "Please rename %r to %r before using 'develop'"
+            % (ei.egg_info, ei.broken_egg_info)
+            )
+        self.args = [ei.egg_name]       
         easy_install.finalize_options(self)
         self.egg_link = os.path.join(self.install_dir, ei.egg_name+'.egg-link')
         self.egg_base = ei.egg_base
@@ -76,10 +80,6 @@ class develop(easy_install):
 
 
 
-
-
-
-
     def uninstall_link(self):
         if os.path.exists(self.egg_link):
             log.info("Removing %s (link to %s)", self.egg_link, self.egg_base)

setuptools/command/egg_info.py

@@ -37,7 +37,7 @@ class egg_info(Command):
         self.tag_build = None
         self.tag_svn_revision = 0
         self.tag_date = 0
-
+        self.broken_egg_info = False
 
     def finalize_options (self):
         self.egg_name = safe_name(self.distribution.get_name())
@@ -61,6 +61,7 @@ class egg_info(Command):
         self.egg_info = self.egg_name.replace('-','_')+'.egg-info'
         if self.egg_base != os.curdir:
             self.egg_info = os.path.join(self.egg_base, self.egg_info)
+        if '-' in self.egg_name: self.check_broken_egg_info()
 
         # Set package version for the benefit of dumber commands
         # (e.g. sdist, bdist_wininst, etc.)
@@ -79,7 +80,6 @@ class egg_info(Command):
 
 
 
-
     def write_or_delete_file(self, what, filename, data):
         """Write `data` to `filename` or delete if empty
 
@@ -170,6 +170,20 @@ class egg_info(Command):
         mm.run()
         self.filelist = mm.filelist
 
+    def check_broken_egg_info(self):
+        bei = self.egg_name+'.egg-info'
+        if self.egg_base != os.curdir:
+            bei = os.path.join(self.egg_base, bei)
+        if os.path.exists(bei):
+            log.warn(
+                "-"*78+'\n'
+                "Note: Your current .egg-info directory has a '-' in its name;"
+                '\nthis will not work correctly with "setup.py develop".\n\n'
+                'Please rename %s to %s to correct this problem.\n'+'-'*78,
+                bei, self.egg_info
+            )
+            self.broken_egg_info = self.egg_info
+            self.egg_info = bei     # make it work for now
 
 class FileList(FileList):
     """File list that accepts only existing, platform-independent paths"""
@@ -185,19 +199,6 @@ class FileList(FileList):
 
 
 
-
-
-
-
-
-
-
-
-
-
-
-
-
 
 
 
@@ -206,7 +207,7 @@ class FileList(FileList):
 class manifest_maker(sdist):
 
     template = "MANIFEST.in"
-    
+
     def initialize_options (self):
         self.use_defaults = 1
         self.prune = 1
@@ -300,7 +301,7 @@ def write_pkg_info(cmd, basename, filename):
 
         safe = getattr(cmd.distribution,'zip_safe',None)
         import bdist_egg; bdist_egg.write_safety_flag(cmd.egg_info, safe)
-    
+
 def warn_depends_obsolete(cmd, basename, filename):
     if os.path.exists(filename):
         log.warn(