Edward, I am trying to build updated relax-py packaging for fink using the 1.3.4 release on x86_64 fink with python2.6. Although your web page indicates that the binaries available are built against python 2.5 and 2.6, I am seeing build failures when I try here with scons 1.2.0... /sw/bin/python2.6 /sw/bin/scons scons: Reading SConscript files ... scons: done reading SConscript files. scons: Building targets ... ########################### # Compiling the C modules # ########################### Building the relaxation curve fitting module 'maths_fns/relax_fit.so' gcc -o maths_fns/c_chi2.os -c -I/sw/include/python2.6 -I/sw/lib/python2.6/site-packages/numpy/core/include -fPIC maths_fns/c_chi2.c gcc -o maths_fns/exponential.os -c -I/sw/include/python2.6 -I/sw/lib/python2.6/site-packages/numpy/core/include -fPIC maths_fns/exponential.c gcc -o maths_fns/relax_fit.os -c -I/sw/include/python2.6 -I/sw/lib/python2.6/site-packages/numpy/core/include -fPIC maths_fns/relax_fit.c gcc -o maths_fns/relax_fit.so -bundle -bundle_loader /sw/bin/python2.6 -dynamic maths_fns/c_chi2.os maths_fns/exponential.os maths_fns/relax_fit.os Undefined symbols: "_PyArg_ParseTupleAndKeywords", referenced from: _setup in relax_fit.os "_PyErr_Print", referenced from: _initrelax_fit in relax_fit.os "_Py_InitModule4_64", referenced from: _initrelax_fit in relax_fit.os "_PyArg_ParseTuple", referenced from: _func in relax_fit.os _dfunc in relax_fit.os "_PyExc_RuntimeError", referenced from: __import_array in exponential.os __import_array in exponential.os __import_array in exponential.os __import_array in relax_fit.os __import_array in relax_fit.os __import_array in relax_fit.os "_PyList_New", referenced from: _back_calc_I in relax_fit.os "__Py_NoneStruct", referenced from: _setup in relax_fit.os _setup in relax_fit.os _setup in relax_fit.os "_PyExc_ImportError", referenced from: _initrelax_fit in relax_fit.os "_PyCObject_AsVoidPtr", referenced from: __import_array in exponential.os __import_array in relax_fit.os "_PyCObject_Type", referenced from: __import_array in exponential.os __import_array in relax_fit.os "_PyImport_ImportModule", referenced from: __import_array in exponential.os __import_array in relax_fit.os "_PyErr_SetString", referenced from: _initrelax_fit in relax_fit.os "_PyErr_Format", referenced from: __import_array in exponential.os __import_array in exponential.os __import_array in exponential.os __import_array in relax_fit.os __import_array in relax_fit.os __import_array in relax_fit.os "_PyList_SetItem", referenced from: _back_calc_I in relax_fit.os "_PyObject_GetAttrString", referenced from: __import_array in exponential.os __import_array in relax_fit.os "_Py_BuildValue", referenced from: _func in relax_fit.os _d2func in relax_fit.os _back_calc_I in relax_fit.os ld: symbol(s) not found Is the 1.3.4 release really python2.6 compatible or do I need additional patches? Thanks in advance for any information. Jack ps I am updating the minfx-py package to the newer 1.0.2 release of course for the python 2.6 compatibility changes.