Mapproxy build does not work any more

[cnouguier]

It seems to be linked to a new release of pyproj

Collecting pyproj
  Downloading https://files.pythonhosted.org/packages/7f/d9/62db3608c734fdd02cb5113a89f377a8b012d14beaee6525afc029b590d4/pyproj-2.1.2.tar.gz (492kB)
  Installing build dependencies: started
  Installing build dependencies: still running...
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'error'
  Complete output from command /usr/local/bin/python /usr/local/lib/python3.5/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmpy96_da6f:
  ERROR: Minimum supported proj version is 6.0.0, installed version is 5.2.0.

[cnouguier]

Still not working even if we specify a previous version of pyproj.

[cnouguier]

For now it seems to work with MapProxy 1.10.4.
Fixed the dependencies version

[danielklim]

Compiling proj4 from source fixed this problem for me.

[cnouguier]

Thanks @danielklim
We finally fixed the version of pyproj in the dockerfile: https://github.com/kalisio/kargo/blob/master/build/mapproxy/dockerfile#L23