In part to substitute issues with time with issues with checksums, I am
writing a build tool for Inferno loosely inspired by djb's redo.  I think
it deals nicely with some of the problems of make/mk tools: it handles
multiple outputs, treats shell variables as /env files for dependencies,
and uses the Inferno shell calling small programs, instead of a
domain-specific shell-like language in a build description file.

https://github.com/catenate/credo