- finalAttrs design pattern
- reorder input set
- remove `null`-ities
- strictDeps
- set openalSupport as true by default
- remove `enableParallelBuilding = true` (since it is true by default in
cmake+ninja)
- use ninja instead of relying on default make
- move luajit and boost pins to top-level
- use lib.get* functions
- use `cmakeBuildDir`
- get rid of nested with in meta
