Fix problem with Windows console scripts conflicting with module names,

thereby confusing the import process.  Scripts are now generated with a
suffix of the form '-script.py' to avoid conflicts.  (The .exe's are still
generated without the '-script' part, so you don't have to type it.)
Thanks to Matthew R. Scott for reporting the problem.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041261

EasyInstall.txt

@@ -780,6 +780,9 @@ Known Issues
 0.6a6
  * Added ``--no-deps`` option.
 
+ * Improved Windows ``.exe`` script wrappers so that the script can have the
+   same name as a module without confusing Python.
+
 0.6a3
  * Improved error message when trying to use old ways of running
    ``easy_install``.  Removed the ability to run via ``python -m`` or by

launcher.c

@@ -12,8 +12,8 @@
 
     To build/rebuild with mingw32, do this in the setuptools project directory:
 
-        gcc -DGUI=0           -mno-cygwin -O -s -o setuptools/cli.exe launcher.c
-        gcc -DGUI=1 -mwindows -mno-cygwin -O -s -o setuptools/gui.exe launcher.c
+       gcc -DGUI=0           -mno-cygwin -O -s -o setuptools/cli.exe launcher.c
+       gcc -DGUI=1 -mwindows -mno-cygwin -O -s -o setuptools/gui.exe launcher.c
 
     It links to msvcrt.dll, but this shouldn't be a problem since it doesn't
     actually run Python in the same process.  Note that using 'exec' instead
@@ -55,7 +55,8 @@ int run(int argc, char **argv, int is_gui) {
     end = script + strlen(script);
     while( end>script && *end != '.')
         *end-- = '\0';
-    strcat(script, (GUI ? "pyw" : "py"));
+    *end-- = '\0';
+    strcat(script, (GUI ? "-script.pyw" : "-script.py"));
 
     /* figure out the target python executable */
 
@@ -74,7 +75,6 @@ int run(int argc, char **argv, int is_gui) {
 
     *ptr = '\0';
     while (ptr>python && isspace(*ptr)) *ptr-- = '\0';  /* strip trailing sp */
-
     if (strncmp(python, "#!", 2)) {
         /* default to python.exe if no #! header */
         strcpy(python, "#!python.exe");

setuptools/command/easy_install.py

@@ -102,13 +102,13 @@ class easy_install(Command):
 
     def delete_blockers(self, blockers):
         for filename in blockers:
-            log.info("Deleting %s", filename)
-            if not self.dry_run:
-                if os.path.isdir(filename) and not os.path.islink(filename):
-                    shutil.rmtree(filename)
-                else:
-                    os.unlink(filename)
-
+            if os.path.exists(filename) or os.path.islink(filename):
+                log.info("Deleting %s", filename)
+                if not self.dry_run:
+                    if os.path.isdir(filename) and not os.path.islink(filename):
+                        shutil.rmtree(filename)
+                    else:
+                        os.unlink(filename)
 
 
 
@@ -464,18 +464,21 @@ class easy_install(Command):
             "   load_entry_point(%(spec)r, %(group)r, %(name)r)()\n"
             ")\n"
         ) % locals()
-
         if sys.platform=='win32':
             # On Windows, add a .py extension and an .exe launcher
             if group=='gui_scripts':
-                ext, launcher = '.pyw', 'gui.exe'
+                ext, launcher = '-script.pyw', 'gui.exe'
+                old = ['.pyw']
                 new_header = re.sub('(?i)python.exe','pythonw.exe',header)
             else:
-                ext, launcher = '.py',  'cli.exe'
+                ext, launcher = '-script.py', 'cli.exe'
+                old = ['.py','.pyc','.pyo']
                 new_header = re.sub('(?i)pythonw.exe','pythonw.exe',header)
-
             if os.path.exists(new_header[2:-1]):
                 header = new_header
+            
+            self.delete_blockers(   # clean up old .py/.pyw w/o a script
+                [os.path.join(self.script_dir,name+x) for x in old])
 
             self.write_script(name+ext, header+script_text)
             self.write_script(
@@ -487,9 +490,6 @@ class easy_install(Command):
             # write the stub with no extension.
             self.write_script(name, header+script_text)
 
-
-
-
     def install_script(self, dist, script_name, script_text, dev_path=None):
         """Generate a legacy script wrapper and install it"""
         spec = str(dist.as_requirement())