[REVIEW] pip does not copy subpackages

[xwang862]

Hi @hema-ted, I am naively following the recommended installation method. After I successfully installed pyzfs with pip install ., I encountered the following error when I tried to run the program:

% pyzfs --wfcfmt qbox --filename /Users/xwang/Programs/pyzfs/pyzfs/examples/o2_qbox_xml/o2.xml
Traceback (most recent call last):
  File "/Users/xwang/anaconda3/bin/pyzfs", line 5, in <module>
    from pyzfs.run import main
  File "/Users/xwang/anaconda3/lib/python3.6/site-packages/pyzfs/run.py", line 8, in <module>
    from .common.misc import parse_sys_argv
ModuleNotFoundError: No module named 'pyzfs.common'

From what I know, pip install . copies your local packages to site-packages and install from there. But it only copies those folders that are explicitly specified in the packages argument of setup(). Since packages=["pyzfs"], the subpackages of pyzfs were not copied.

Of course one can avoid my mistake by add the pyzfs source folder to PYTHONPATH. Or, you can save this step by either:

• change your packages to include explicitly the subpackages like pyzfs.common, pyzfs.common.wfc, etc., or
• use packages=find_packages() in setup(). This will automatically include all folders that contain the __init__.py file. And this will be especially useful if your program becomes large.

[hema-ted]

Hi @xwang862,

Thanks for your comment. In commit 8914384 I used find_packages in setup.py, as you suggested. Now it seems like the code will work by directly executing "pip install ."