Support for deadnix pre-commit check

hosts/myself/default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, lib, ... }:
+{ lib, ... }:
 {
   imports = [
     ./ceph.nix

hosts/myself/hardware-configuration.nix

@@ -1,7 +1,7 @@
 # Do not modify this file!	It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.	Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{ config, lib, modulesPath, ... }:
 
 {
   imports =

hosts/myself/matrix.nix

@@ -1,7 +1,5 @@
-{ config, pkgs, inputs, lib, ... }:
+{ pkgs, ... }:
 let
-  domain = "thehellings.com";
-  fqdn = "matrix.${domain}";
   conn = "postgresql:///dendrite?sslmode=disable&host=/run/postgresql";
 in
 {
@@ -10,7 +8,7 @@ in
   greg.containers.matrix = {
     tailscale = true;
     subnet = "204";
-    builder = { pkgs, config, ... }: {
+    builder = { config, ... }: {
       networking.firewall.allowedTCPPorts = [ config.services.dendrite.httpPort ];
 
       # Environment secrets