An internal error has occurred when ipython not installed

[oscarbenjamin]

I get this error from spin ipython when ipython is not installed:

$ spin ipython
...
 $ ipython --ignore-cwd

Traceback (most recent call last):
  File "<frozen os>", line 611, in execvp
  File "<frozen os>", line 653, in _execvpe
  File "<frozen os>", line 644, in _execvpe
FileNotFoundError: [Errno 2] No such file or directory

An internal error has occurred. Please file a bug report at

  https://github.com/scientific-python/spin

including the above traceback and the following information:

  spin: 0.13, package: python-flint

Aborting.

Obviously it can't run ipython if I don't have ipython installed but the error message could be improved to at least mention ipython rather than suggesting to open a bug report here.

[stefanv]

Thanks for the report. See #271.