does conda packaging best practice include egg files and .pth files?

[David S]

I'm maintaining a multi-user conda environment, and I'm looking at adding a conda package whose build script does

python setup.py install

it looks like the package just creates two files

package.pth

package*.egg

in my environments site-packages area. 

The .pth file looks benign, it just lists the egg file, that is no other PYTHONPATH manip via site.py's processing of it (like conda-verify flags easy_install.pth files that can collide with one another, but I guess it doesn't complain about egg files in general), however I've got the sense that egg files and .pth files are not a "best practice" for conda, with the exception of using .pth for develop versions.

Is this wrong? If switching to

python setup.py install --single-version-externally-managed

is a best practice for conda packaging, I'm sure the author would appreciate knowing. 

For example, does conda-forge have stricter rules before accepting packages? Like, no egg files? I don't have enough knowledge of egg files to evaluate, but my feeling is they are problematic, I'd rather see the python package in its own directory.

best,

David

[Michael Sarahan]

Yes, having eggs and pth files is discouraged.  Authors of recipes at conda-forge are strongly encouraged to use

python setup.py install --single-version-externally-managed --record=record.txt

to avoid the egg.  This is necessary for any package that uses setuptools in setup.py for its setup function.

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[Chris Barker - NOAA Federal]

You can also use pip:

pip install ./

It will call setuptools with all the right flags.

It'll also work for raw distutils packages.

-CHB

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