There is a hack to patch only essential component of a system without rebuilding all dependent pkgs : https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-su

There is a hack to patch only essential component of a system without rebuilding all dependent pkgs : https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/replace-dependency.nix https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-supp... .