can I use this in neovim? Something like fzf.vim
> Store-based systems, however, are static in nature, with all dependencies being resolved at build time.
I think the author is saying that the shared libraries (.so) are available at build time on store-based systems and never change. Thus, the dynamic linker can speed up symbol resolution by doing the symbol resolution at build time and sticking the result in output binary. This is distinct from static linking which sticks the entire library (.a) into the output binary.
Maybe I'm holding it wrong, but I almost never get useful error messages from Nix (NixOS and NixOps). Almost every error is deep within some module with no trace to the option I set. Just nix barfing its 300-line eval traceback where my own code doesn't even appear.