spreadsheet-widget is a new dependency which is not available in macports and debian

[Friedrich Beckmann]

Hi Jeremy,

with this commit 

http://git.savannah.gnu.org/cgit/pspp.git/commit/?id=17ca35e4ca8abf4ba0c0ae82920b985fa17648cf

John introduced a new dependency to his gtk3 spreadsheet widget https://www.gnu.org/software/ssw/

I guess there is currently no port of this in macports. There is also no package in debian.

Regards

Friedrich