IDLE fails to start when using a recent Python 2.3 snapshot 
because it tries to write files in the Python.framework, which is not 
writeable by normal users. 

A traceback:

IOError: [Errno 13] Permission denied: '/Library/Frameworks/
Python.framework/Versions/2.3/Mac/Tools/IDE/Widgets.rsrc.
df.rsrc'
Traceback (most recent call last):
  File "./Mac/Tools/IDE/PythonIDE.py", line 35, in ?
  File "./Mac/Tools/IDE/PythonIDE.py", line 23, in init
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/macresource.py"
, line 64, in need
    refno = open_pathname(pathname)
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/macresource.py"
, line 92, in open_pathname
    pathname = _decode(pathname)
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/macresource.py"
, line 104, in _decode
    applesingle.decode(pathname, newpathname, resonly=1)
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/applesingle.py"
, line 74, in decode
    fp = open(output, 'wb')
IOError: [Errno 13] Permission denied: '/Library/Frameworks/
Python.framework/Versions/2.3/Mac/Tools/IDE/Widgets.rsrc.
df.rsrc'
Traceback (most recent call last):
  File "./Mac/Tools/IDE/PythonIDE.py", line 35, in ?
  File "./Mac/Tools/IDE/PythonIDE.py", line 23, in init
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/macresource.py"
, line 64, in need
    refno = open_pathname(pathname)
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/macresource.py"
, line 92, in open_pathname
    pathname = _decode(pathname)
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/macresource.py"
, line 104, in _decode
    applesingle.decode(pathname, newpathname, resonly=1)
  File "/Library/Frameworks/Python.framework/Versions/2.3/Mac/
Lib/applesingle.py"
, line 74, in decode
    fp = open(output, 'wb')


Initial reaction from Jack:

Ah! That's an interesting problem...

Here's what's going on, maybe someone here has good ideas on 
how to solve it.

The ".rsrc" files in the CVS tree aren't actually resource files: 
they're resource files encoded as AppleSingle. This is the way 
MacCVS manages to store two-fork files on a CVS server that is 
blissfully unaware of this Apple-ism. The macresourced module is 
aware that a .rsrc file can be either a bona-fide resource file or an 
AppleSingle file. In the latter case it decodes the file and caches 
the result as a ".rsrc.df.rsrc" file, with the resources in the data 
fork. But: if you can't write the directory where the .rsrc resides 
this fails.

Storing the files as datafork-based .rsrc files in CVS will make life 
miserable for me when building on OS9.

Checking the files out with MacCVS will make the standard unix 
tarball distribution non-functional on OSX.

Hmm, I could probably pre-convert the files while installing, similar 
to the precompilation step for .pyc and .pyo files....

Could you file a sourceforge bug report for this, please, so I won't 
forget?

Logged In: YES 
user_id=45365

Fixed in Mac/OSX/Makefile rev 1.21. We also repcompile the .py files now.