{ config, pkgs, lib, ... }: { config = lib.mkMerge [ (lib.mkIf (lib.any (fs: fs == "unionfs-fuse") config.boot.initrd.supportedFilesystems) { boot.initrd.kernelModules = [ "fuse" ]; boot.initrd.extraUtilsCommands = '' cp -v ${pkgs.fuse}/lib/libfuse* $out/lib cp -v ${pkgs.unionfs-fuse}/bin/unionfs $out/bin ''; boot.initrd.postDeviceCommands = '' # Hacky!!! fuse hard-codes the path to mount mkdir -p /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-${pkgs.utillinux.name}/bin ln -s $(which mount) /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-${pkgs.utillinux.name}/bin ln -s $(which umount) /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-${pkgs.utillinux.name}/bin ''; }) (lib.mkIf (lib.any (fs: fs == "unionfs-fuse") config.boot.supportedFilesystems) { system.fsPackages = [ pkgs.unionfs-fuse ]; }) ]; }