To install it on emacs 29 paste this into a scratch buffer and evaluate it:
(package-vc-install
'(minimpc :url "https://codeberg.org/nmtake/minimpc.el.git"))
And put this in your init.el:
(require 'minimpc)
You don't need Vertico or Orderless. I'm using emacs' built-in completion--it works fine.