Bug#861741: src:sympy: Relax the Recommends dependency chain

[Ghislain Antony Vaillant]

Package: src:sympy
Severity: normal

Dear Maintainer,

The spyder IDE recommends the installation of sympy, but is yet to be
enabled in the Debian packages. Adding python[,3]-sympy to Recommends
makes the installation jump from a couple 100MB to 2GB, which is
uncomfortably high.  

Indeed, the chain of Recommends would transitively pulls a significant
number of packages, some of which should probably be downgraded to
Suggests to help reduce the installation size of spyder[,3], such as:

- The documentation package: python-sympy-doc,
- The isympy[,3] console scripts,
- The texlive stuff and dvipng.

What are your thoughts?

Cheers,
Ghis


-- System Information:
Debian Release: 9.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64
 (x86_64)

Kernel: Linux 4.9.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)