d89deddd5d
This adds basically an indirection to systemPackages to automatically install an interface for flatpak for their respective environments. e.g if I enable pantheon and flatpak you'll get appcenter, and on gnome you'll see gnome-software. https://github.com/NixOS/nixpkgs/issues/99648#issuecomment-706691174
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.