There's a proper tsort library now and prototypes are already in the current VyOS.

Not sure if still relevant after these years, as hardware has progressed to larger RAM sizes, but Debian x32 port doesn't seem to be very active anymore.

Closing this. Further shrinking is not priority now
we can comeback to this later if there will be proper business case

I dont think this is resolved.

Now that there's libvyosconfig, the issue is more complicated, so the original ideas don't really apply in unmodified form.

We've all done quite a bit of shrinking since the point when this task was created.

@MrXermon Let's say someone is setting up BGP peering and wants to control import or export of prefixes using prefixlist. With your suggestion, how would you deny certain prefixes and accept all others? Can JunOS solve this directly with prefixlist without using route-map?