[Numpy-discussion] Cython requirement?

[Benjamin Root]

When did Cython become a build requirement? I remember discussing the use
of Cython a while back, and IIRC the agreement was that both the cython
code and the generated C files would be included in version control so that
cython wouldn't be a build requirement, only a developer requirement when
modifying those files.

I just did a git clean -fxd and rebase to current master, and I am getting
a message indicating that I need Cython 0.19 to build numpy (I haven't
updated cython in ages on this particular machine).

ben at tigger:~/Programs/numpy$ python setup.py install --user
Running from numpy source directory.
Cythonizing sources
Processing numpy/random/mtrand/mtrand.pyx
Traceback (most recent call last):
  File "/home/ben/Programs/numpy/tools/cythonize.py", line 199, in <module>
    main()
  File "/home/ben/Programs/numpy/tools/cythonize.py", line 195, in main
    find_process_files(root_dir)
  File "/home/ben/Programs/numpy/tools/cythonize.py", line 187, in
find_process_files
    process(cur_dir, fromfile, tofile, function, hash_db)
  File "/home/ben/Programs/numpy/tools/cythonize.py", line 161, in process
    processor_function(fromfile, tofile)
  File "/home/ben/Programs/numpy/tools/cythonize.py", line 59, in
process_pyx
    raise Exception('Building %s requires Cython >= 0.19' % VENDOR)
Exception: Building NumPy requires Cython >= 0.19
Traceback (most recent call last):
  File "setup.py", line 251, in <module>
    setup_package()
  File "setup.py", line 239, in setup_package
    generate_cython()
  File "setup.py", line 191, in generate_cython
    raise RuntimeError("Running cythonize failed!")
RuntimeError: Running cythonize failed!

Ben Root
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