Polari has undeclared dependency on gjs 1.53.90
Originally reported here
Polari 3.30.0 won't compile against gjs 1.52 because of the debugger console feature introduced in 36c881b8
Debian and Ubuntu 18.10 haven't switched to gjs 1.54 yet because of the mozjs60 transition. (If I am reading correctly, Fedora 29 hasn't switched yet either.)
So at a minimum, I think it would be useful if that dependency would be listed in meson.build.
But I would prefer for Polari 3.30.x to still build with gjs 1.52. gjs 1.54 is mozjs60 only and it looks like the intent in meson.build is to support both mozjs52 and mozjs60 for now.