Description:

"Sqlite3" library provided by the pypy package fails to load. It does work with the original binaries downloaded from pypy.org. The log below shows the pypy.org binary version first, followed by the one from the package:

--------------------------------------------------------------------
jupiter:~/Downloads/pypy-2.0-beta2
% bin/pypy
Python 2.7.3 (3eef596df459, Apr 06 2013, 09:53:06)
[PyPy 2.0.0-beta2 with GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
And now for something completely different: ``denial is rarely a good debugging
technique''
>>>> import sqlite3
>>>>

jupiter:~/Downloads/pypy-2.0-beta2
% pypy
Python 2.7.3 (c13457babbfb, Apr 22 2013, 15:33:52)
[PyPy 2.0.0-beta2 with GCC 4.8.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
And now for something completely different: ``snow! snow! (ter)''
>>>> import sqlite3
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/opt/pypy/lib-python/2.7/sqlite3/__init__.py", line 24, in <module>
from dbapi2 import *
File "/opt/pypy/lib-python/2.7/sqlite3/dbapi2.py", line 27, in <module>
from _sqlite3 import *
File "/opt/pypy/lib_pypy/_sqlite3.py", line 273, in <module>
""", libraries=['sqlite3']
File "/opt/pypy/lib_pypy/cffi/api.py", line 311, in verify
lib = self.verifier.load_library()
File "/opt/pypy/lib_pypy/cffi/verifier.py", line 68, in load_library
self.compile_module()
File "/opt/pypy/lib_pypy/cffi/verifier.py", line 55, in compile_module
self._write_source()
File "/opt/pypy/lib_pypy/cffi/verifier.py", line 128, in _write_source
file = open(self.sourcefilename, 'w')
IOError: [Errno 2] No such file or directory: '/opt/pypy/lib_pypy/__pycache__/_cffi__g453d66ecx62c16045.c'
>>>>
--------------------------------------------------------------------

Additional info:
* confirmed on my machine with the current version (2.0beta2.63547-1) and 2.0beta2 (previous release)
* removing and reinstalling pypy didn't help
* the system is up to date

Steps to reproduce:
1. Start pypy to get to the REPL
2. Type "import sqlite3"