easy_install broken on Windows

[tom-genp@…]

Gives error "trac-0.10b1.win32.exe is not a valid distutils Windows .exe".

C:> easy_install trac
Searching for trac
Reading http://www.python.org/pypi/trac/
Reading http://projects.edgewall.com/trac
Reading http://projects.edgewall.com/trac/wiki/TracDownload
Reading http://www.python.org/pypi/trac/0.9
Best match: trac 0.10b1
Downloading ftp://ftp.edgewall.com/pub/trac/trac-0.10b1.win32.exe
Processing trac-0.10b1.win32.exe
error: c:\docume~1\tom\locals~1\temp\easy_install-7kyhmf\trac-0.10b1.win32.exe is not a valid distutils Windows .exe

[Matthew Good]

Try upgrading setuptools:

easy_install -U setuptools

If it still doesn't work I believe this is a bug in setuptools, since the Trac installer is generated by distutils.

[Matthew Good]

I've confirmed this on the setuptools trunk. There seems to be an error in how setuptools is locating the config information which was fixed for me with the following patch:

setuptools/command/easy_install.py

@@ -1249 +1249 @@
         if tag not in (0x1234567A, 0x1234567B):
             return None     # not a valid tag
 
-        f.seek(prepended-(12+cfglen+bmlen))
+        f.seek(prepended-(12+cfglen))
         cfg = ConfigParser.RawConfigParser({'version':'','target_version':''})
         try:
             cfg.readfp(StringIO.StringIO(f.read(cfglen).split(chr(0),1)[0]))

However, I don't know if this will break support for easy_install with other distutils installers. I've reporting the issue on the distutils mailing list for feedback.

[Matthew Good]

Well, even with that patch easy_install still doesn't work with the Windows installer, or any of the Trac source downloads. It bypasses the Trac installer's generation of the "siteconfig.py" file needed to locate the Trac resources, so for now installing Trac with easy_install does not seem to be an option.

Trac 0.11 will support setuptools for installation, so I think you'll have to wait until then to "easy_install trac".