pythonPackages.basemap: Python interpreter cannot import basemap

[knedlsepp]

Issue description

I'm trying to run a nix-shell with several python packages. One of them is basemap.
I cannot successfully import basemap however.
Oddly enough it works when using ipython as REPL.

Steps to reproduce

nix-shell -p pythonPackages.basemap  --pure --run "python -c 'import mpl_toolkits.basemap'"

outputs: ImportError: No module named basemap

However if we use ipython it works:

nix-shell -p pythonPackages.basemap pythonPackages.ipython --pure --run "ipython -c 'import mpl_toolkits.basemap'"

Technical details

• System: openSUSE13
• Nix version: 1.11.6
• Nixpkgs version: "17.09pre104446.09c91f5"

[FRidh]

That's a funny one. The following does function:

nix-shell -p 'python.withPackages(ps: with ps; [basemap])'  --pure --run "python -c 'import mpl_toolkits.basemap'"

Also, when I fix the expression to build a wheel like we normally do I can import it as well. Seems like that's the proper fix :)