ENH: package not installable in editable mode

[mathurinm]

Hi @tbjohns
pip install . works fine, but pip install -e . fails:

  Running setup.py develop for blitzml
    ERROR: Complete output from command /home/mathurin/anaconda3/bin/python -c 'import setuptools, tokenize;__file__='"'"'/home/mathurin/workspace/BlitzML/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' develop --no-deps:
    ERROR: running develop
    running egg_info
    writing blitzml.egg-info/PKG-INFO
    writing dependency_links to blitzml.egg-info/dependency_links.txt
    writing top-level names to blitzml.egg-info/top_level.txt
    reading manifest file 'blitzml.egg-info/SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    writing manifest file 'blitzml.egg-info/SOURCES.txt'
    running build_ext
    error: can't copy 'build/lib.linux-x86_64-3.6/blitzml.libblitzml.so': doesn't exist or not a regular file
    ----------------------------------------

Is there an easy way to make this work ?