Cannot run on PyPy

Cannot run on PyPy.
--------------------------
Installation looks good.

(pypy)[root@l ~]# pip install couchbase
Downloading/unpacking couchbase
Downloading couchbase-1.0.0.tar.gz (140kB): 140kB downloaded
Running setup.py egg_info for package couchbase

Installing collected packages: couchbase
Running setup.py install for couchbase
building 'couchbase._libcouchbase' extension
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/argument.c -o build/temp.linux-x86_64-2.7/src/argument.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/exceptions.c -o build/temp.linux-x86_64-2.7/src/exceptions.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/ext.c -o build/temp.linux-x86_64-2.7/src/ext.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/result.c -o build/temp.linux-x86_64-2.7/src/result.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/opresult.c -o build/temp.linux-x86_64-2.7/src/opresult.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/callbacks.c -o build/temp.linux-x86_64-2.7/src/callbacks.o
src/callbacks.c: In function 'get_common_objects':
src/callbacks.c:148: warning: implicit declaration of function 'PyErr_WarnExplicit'
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/convert.c -o build/temp.linux-x86_64-2.7/src/convert.o
src/convert.c: In function 'encode_common':
src/convert.c:100: warning: implicit declaration of function 'PyByteArray_Check'
src/convert.c:146: warning: implicit declaration of function 'PyByteArray_AS_STRING'
src/convert.c:146: warning: assignment makes pointer from integer without a cast
src/convert.c:147: warning: implicit declaration of function 'PyByteArray_GET_SIZE'
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/connection.c -o build/temp.linux-x86_64-2.7/src/connection.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/store.c -o build/temp.linux-x86_64-2.7/src/store.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/constants.c -o build/temp.linux-x86_64-2.7/src/constants.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/multiresult.c -o build/temp.linux-x86_64-2.7/src/multiresult.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/miscops.c -o build/temp.linux-x86_64-2.7/src/miscops.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/typeutil.c -o build/temp.linux-x86_64-2.7/src/typeutil.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/oputil.c -o build/temp.linux-x86_64-2.7/src/oputil.o
src/oputil.c: In function 'pycbc_oputil_check_sequence':
src/oputil.c:198: warning: implicit declaration of function 'PyByteArray_Check'
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/get.c -o build/temp.linux-x86_64-2.7/src/get.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/arithmetic.c -o build/temp.linux-x86_64-2.7/src/arithmetic.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/http.c -o build/temp.linux-x86_64-2.7/src/http.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/htresult.c -o build/temp.linux-x86_64-2.7/src/htresult.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/ctranscoder.c -o build/temp.linux-x86_64-2.7/src/ctranscoder.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/observe.c -o build/temp.linux-x86_64-2.7/src/observe.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/viewrow/viewrow.c -o build/temp.linux-x86_64-2.7/src/viewrow/viewrow.o
cc -O2 -fPIC -Wimplicit -I/var/pypy/include -c src/contrib/jsonsl/jsonsl.c -o build/temp.linux-x86_64-2.7/src/contrib/jsonsl/jsonsl.o
cc -shared build/temp.linux-x86_64-2.7/src/argument.o build/temp.linux-x86_64-2.7/src/exceptions.o build/temp.linux-x86_64-2.7/src/ext.o build/temp.linux-x86_64-2.7/src/result.o build/temp.linux-x86_64-2.7/src/opresult.o build/temp.linux-x86_64-2.7/src/callbacks.o build/temp.linux-x86_64-2.7/src/convert.o build/temp.linux-x86_64-2.7/src/connection.o build/temp.linux-x86_64-2.7/src/store.o build/temp.linux-x86_64-2.7/src/constants.o build/temp.linux-x86_64-2.7/src/multiresult.o build/temp.linux-x86_64-2.7/src/miscops.o build/temp.linux-x86_64-2.7/src/typeutil.o build/temp.linux-x86_64-2.7/src/oputil.o build/temp.linux-x86_64-2.7/src/get.o build/temp.linux-x86_64-2.7/src/arithmetic.o build/temp.linux-x86_64-2.7/src/http.o build/temp.linux-x86_64-2.7/src/htresult.o build/temp.linux-x86_64-2.7/src/ctranscoder.o build/temp.linux-x86_64-2.7/src/observe.o build/temp.linux-x86_64-2.7/src/viewrow/viewrow.o build/temp.linux-x86_64-2.7/src/contrib/jsonsl/jsonsl.o -lcouchbase -o build/lib.linux-x86_64-2.7/couchbase/_libcouchbase.pypy-20.so

Successfully installed couchbase
Cleaning up...
-------------------------

It fails on Library import.

ImportError: unable to load extension module '/var/pypy/site-packages/couchbase/_libcouchbase.pypy-20.so': /var/pypy/site-packages/couchbase/_libcouchbase.pypy-20.so: undefined symbol: PyErr_WarnExplicit

-----------------------

It runs well on Python 2.7 (without PyPy) on same machine.