{ config, pkgs, ... }: { # FIXME: This is unnecessary when https://github.com/NixOS/nixpkgs/pull/262462 is merged system.fsPackages = [pkgs.bindfs]; fileSystems = let mkRoSymBind = path: { device = path; fsType = "fuse.bindfs"; options = ["ro" "resolve-symlinks" "x-gvfs-hide"]; }; aggregatedFonts = pkgs.buildEnv { name = "system-fonts"; paths = config.fonts.packages; pathsToLink = ["/share/fonts"]; }; in { "/usr/share/icons" = mkRoSymBind "/run/current-system/sw/share/icons"; "/usr/share/fonts" = mkRoSymBind (aggregatedFonts + "/share/fonts"); }; services.flatpak.enable = true; }