Is there any tooling to break up a C build into independent derivations?
I wanted to look into building Emacs with more granularity but without relying on impure caching.
This is relevant: Advice wanted: writing a build system in Nix - #2 by Infinisil
Work on the tool @infinisil refers to in that thread has not continued yet, because we got the opportunity to do some serious yak shaving first. But the one by @sternenseemann follows the same pattern.