Nix, Common Lisp, Emacs and literate programming.
My passion project is cl-nix-lite, a Common Lisp package scope for Nix, without Quicklisp.
I also maintain tomono, a multi-to-monorepository merge tool. It’s written entirely as a Literate Program.
My work is released under the AGPLv3. I am always willing to grant special commercial licenses, for a donation to me or the FSF.