… and then today I realized that if I’m managing not only my personal systems with full nix config repo checkouts, but also servers and nucs and whatnot that only get nixos-rebuild --target-host deploys, I would prefer the full wrapper including -u {init.lua} (ending back at @fzakaria 's post)
So I added an initLuaFile option that does exactly that. Basically extending @viperML 's neovim wrapper from scratch to make that part optional.