And who do we need to pay for that? 

 sparrow already has ubuntu/debian builds 

 you mean a .deb in some repository so you can apt get it? 

 Yes thats right.

https://github.com/sparrowwallet/sparrow/issues/372 

 @craigraw has already worked on this topic

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1024547 

 Good find, I didn't know Craig took that on already. 

 but it seems debian package repo is not maintainer friendly