On travis: ImportError: No module named download

[robnagler]

If you look at the previous build, it's got the same version of pip, but it doesn't get this error:

$ python --version
Python 2.7.14
$ pip --version
pip 9.0.1 from /home/travis/virtualenv/python2.7.14/lib/python2.7/site-packages (python 2.7)
install.1
$ pip install setuptools==32.1.3
$ python setup.py pkdeploy
Traceback (most recent call last):
  File "setup.py", line 7, in <module>
    from pykern.pksetup import setup
  File "/home/travis/build/radiasoft/pykern/pykern/pksetup.py", line 51, in <module>
    import pip.download
ImportError: No module named download

[slacAWallace]

I had a very similar issue, which prevented installation of sirepo.

Traceback (most recent call last): File "setup.py", line 7, in <module> from pykern.pksetup import setup File "/home/vagrant/src/radiasoft/codes/pykern-20180517.171435/pykern/pykern/pksetup.py", line 51, in <module> import pip.download ImportError: No module named download 2018-05-17T17:14:30Z install_main Unexpected error; Install failed.

[robnagler]

Looks like the moved pip.download to pip._internal.download. From the Release Notes:

Move all of pip's APIs into the pip._internal package, properly reflecting the fact that pip does not currently have any public APIs. (#4696, #4700)

We use pip to parse requirements.txt so we'll change that to whatever is recommended.

[robnagler]

@slacAWallace Please try the last step again. Thanks.

[slacAWallace]

Yes that seemed to do the trick. Install was successful. Thanks!