Maybe we should check cassowary

https://croisant.net/blog/2016-02-24-ui-layout-constraints-part-1/#ui-constraints

2017-10-27 19:13 GMT+02:00 Stephane Ducasse <stepharo.self@gmail.com>:
Hi

I was wondering if there is a layout that we can use to propose
alternate placing layout
for widgets in spec?

Like

attached to�� the left 10pixels rubber band box or fixed size box
10pixels attached to the right.


Stef