Windows by default does not allow to run a posix shell. Here a different path is required. First change into the directory gsl_dist. Copy the file gsl_site_example.py and edit it to reflect your installation of GSL and SWIG if you want to run it yourself. The pygsl windows binaries distributed over http://sourceforge.net/projects/pygsl/ are built using the mingw32 compiler.
rm -r
"python install path"/lib/python
"version"/site-packages/pygsl
cvs -d:pserver:anonymous@cvs.pygsl.sourceforge.net:/cvsroot/pygsl login #Hit return for no password. cvs -z3 -d:pserver:anonymous@cvs.pygsl.sourceforge.net:/cvsroot/pygsl co pygsl