(git)hopa:~deb/scikit-learn[master]git
$> make cython          
python build_tools/cythonize.py sklearn
python: can't open file 'build_tools/cythonize.py': [Errno 2] No such file or directory
Makefile:52: recipe for target 'cython' failed
make: *** [cython] Error 2

$> git describe
0.4-20532-g9d57e75

$> git describe --tags
0.17-branching-1893-g9d57e75