build a nix derivation of the form file.drv build recipe

readme.md

• https://www.google.com/search?q=nix+instantiate+drv+file
• https://nixos.org/guides/nix-pills/06-our-first-derivation.html

i.e.

nix derivation show .#nixOnDroidConfigurations.sams9.config.home-manager.config.custom.programs.emacs-novelist.finalPackage
nix derivation show "/nix/store/pfcmg5gwl3mqiyb4zppwrkzm790mkp2a-emacs-ox-odt-9.2.2.drv"
nix-store -r /nix/store/pfcmg5gwl3mqiyb4zppwrkzm790mkp2a-emacs-ox-odt-9.2.2.drv