Being a newbie to this list, I recognize that the answer to this might be "why would you do that?". But surely it can't be worse than that. Briefly put, I want to install numpy and scipy in jython (reasons below). Running 'cd <jython distro>; jython setup.py install' runs into errors. But installing he same distro under python works fine. So the underlying question is: is there a way to install numpy under jython? Here's how I got here. The reason I would like this under jython is wrapped up in Netbeans, Octave, Matlab and Windows 7. I've been using Netbeans under linux for years for c++ and a bit of Java, and the editing environment with cross referencing and syntax-directed editing is quite good. Netbeans only presents python debugging via jython, which makes sense. Most of the work I am doing is with matrix algebra and I started with Octave, but while Octave is excellent for operating on matrices, it is not good for file format manipulations, hence for some operations I'd like to turn to python, and if I edit under Netbeans, the debugging requires that I install numpy under jython. At work I use a machine running fedora 16 .... but... I travel a bit and my travel machine is a laptop running windows 7. Therefore, Windows 7 + Netbeans + numpy + debugging ==> jython + numpy + scipy. Here's the install problems, which occur under numpy-1.7.0b1 and 1.6.2. The first install error is in numpy\distutils\exec_command.py, line 585, where it throws an exception because the java exec tests are unlimited. So I comment out those two lines, and rerun the setup.py. The next errors are notes about features not being available because other packages are also unavailable. I don't think this is really getting in the way, although I could be wrong. The libraries mentioned as missing are: * libraries mkl,vml,guide * libraries ptf77blas,ptcblas,atlas * libraries lapack_atlas So setup gets as far as this: running install running build running config_cc unifing config_cc, config, build_clib, build_ext, build commands --compiler options running config_fc unifing config_fc, config, build_clib, build_ext, build commands --fcompiler options running build_src build_src building py_modules sources creating build creating build\src.java1.6.0_33-2.5 creating build\src.java1.6.0_33-2.5\numpy creating build\src.java1.6.0_33-2.5\numpy\distutils building library "npymath" sources No module named jythoncompiler in numpy.distutils; trying from distutils customize GnuFCompiler Could not locate executable g77 Could not locate executable f77 don't know how to compile Fortran code on platform 'java' Some of these messages make it look as if the config wants to use the cygwin gnu compilers, which are ok, but under windows are not nearly as good as mingw gnu compiler or better yet, the visual studio 2010 compiler. I have both, but I don't see a way to steer the numpy setup to use them. The next error is fatal File "...\numpy-1.7.0b1\numpy\distutils\ccompiler.py", line 111, in CCompiler_object_filenames if ext not in self.src_extensions: TypeError: 'NoneType' object is not iterable This one looks as if it does not know what .o or .a or .obj files are. Fixing this one looks like hours of digging through the code. Is there a simpler solution? Thanks in advance, Todd