diff --git a/flake.nix b/flake.nix
index 8d4ed81e..4eb63b98 100644
--- a/flake.nix
+++ b/flake.nix
@@ -244,7 +244,7 @@
         inherit system;
 
         modules = [
-          ({ config, ... }: {
+          ({ ... }: {
             _module.args = {
               inherit hostRegistry inputs zentralwerk;
             };
diff --git a/hosts/bind/default.nix b/hosts/bind/default.nix
index 06aa7800..14c394cb 100644
--- a/hosts/bind/default.nix
+++ b/hosts/bind/default.nix
@@ -1,4 +1,4 @@
-{ zentralwerk, config, hostRegistry, lib, pkgs, ... }:
+{ zentralwerk, config, lib, pkgs, ... }:
 let
   systemctl = "${pkgs.systemd}/bin/systemctl";
   deployCommand = "${systemctl} start deploy-c3d2-dns";
diff --git a/hosts/gitea/default.nix b/hosts/gitea/default.nix
index 790d37a1..42b36d24 100644
--- a/hosts/gitea/default.nix
+++ b/hosts/gitea/default.nix
@@ -1,4 +1,4 @@
-{ config, pkgs, lib, zentralwerk, ... }:
+{ config, pkgs, lib, ... }:
 
 {
   c3d2.deployment.server = "server10";
diff --git a/hosts/hedgedoc/default.nix b/hosts/hedgedoc/default.nix
index 2717f4d6..e90b9a17 100644
--- a/hosts/hedgedoc/default.nix
+++ b/hosts/hedgedoc/default.nix
@@ -1,4 +1,4 @@
-{ config, pkgs, zentralwerk, ... }:
+{ config, pkgs, ... }:
 
 {
   c3d2.deployment.server = "server10";
diff --git a/hosts/hydra/default.nix b/hosts/hydra/default.nix
index aa5a2e81..1e90451a 100644
--- a/hosts/hydra/default.nix
+++ b/hosts/hydra/default.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, zentralwerk, ... }:
+{ config, lib, ... }:
 
 let
   cachePort = 5000;
diff --git a/hosts/hydra/hardware-configuration.nix b/hosts/hydra/hardware-configuration.nix
index 4ae7718c..3e134373 100644
--- a/hosts/hydra/hardware-configuration.nix
+++ b/hosts/hydra/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 =
diff --git a/hosts/jabber/default.nix b/hosts/jabber/default.nix
index 09db9a74..6c1d482e 100644
--- a/hosts/jabber/default.nix
+++ b/hosts/jabber/default.nix
@@ -4,9 +4,7 @@ let
   domain = "jabber.c3d2.de";
   publicIPv4 = "81.201.149.152";
 
-  inherit (pkgs.jabber-secrets)
-    c3d2DynDns
-    coturnUser coturnPassword;
+  inherit (pkgs.jabber-secrets) coturnUser coturnPassword;
   prosodyFirewall = pkgs.writeText "antispam.pfw" ''
     %ZONE spam: creep.im, default.rs, sj.ms, anonym.im, xmpp.jp, safetyjabber.com, im.hot-chilli.net, jabb3r.org, draugr.de, laba.im, xmpp.sh, jabber.bitactive.com, 404.city, jabber.cd, jabber.jc-otto.de, jabster.pl, jabber.no, anoxinon.me, ubuntu-jabber.net, anonarchy.im, jabber.freenet.de, exploit.im, 616.pub, omemo.im, rsocks.net, chatwith.xyz, jabber.cz, jabbim.cz, blabber.im, jabber.root.cz, jabb.im, jabber.infos.ru, jabbim.pl, jabbim.com, linuxlovers.at, jabbim.ru, jabber.sk, njs.netlab.cz, jabba.biz
 
diff --git a/hosts/mailtngbert/default.nix b/hosts/mailtngbert/default.nix
index 19e5115d..957056f9 100644
--- a/hosts/mailtngbert/default.nix
+++ b/hosts/mailtngbert/default.nix
@@ -1,4 +1,4 @@
-{ zentralwerk, config, pkgs, lib, ... }:
+{ config, pkgs, lib, ... }:
 
 let
   domain = "mailtngbert.c3d2.de";
diff --git a/hosts/mastodon/default.nix b/hosts/mastodon/default.nix
index 9135f95e..7ffa36da 100644
--- a/hosts/mastodon/default.nix
+++ b/hosts/mastodon/default.nix
@@ -1,4 +1,4 @@
-{ zentralwerk, config, lib, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 {
   c3d2.hq.statistics.enable = true;
   c3d2.deployment.server = "server10";
diff --git a/hosts/nfsroot/tftp.nix b/hosts/nfsroot/tftp.nix
index 7c04a781..742c5e56 100644
--- a/hosts/nfsroot/tftp.nix
+++ b/hosts/nfsroot/tftp.nix
@@ -1,4 +1,4 @@
-{ tftproots, hostRegistry, lib, pkgs, ... }:
+{ tftproots, pkgs, ... }:
 
 {
   networking.firewall.enable = false;
diff --git a/hosts/rc3ticker/default.nix b/hosts/rc3ticker/default.nix
index e99b1eba..db658b96 100644
--- a/hosts/rc3ticker/default.nix
+++ b/hosts/rc3ticker/default.nix
@@ -1,4 +1,4 @@
-{ zentralwerk, config, ... }:
+{ config, ... }:
 
 {
   deployment = {
diff --git a/hosts/sdrweb/default.nix b/hosts/sdrweb/default.nix
index 60fdcff4..3144389e 100644
--- a/hosts/sdrweb/default.nix
+++ b/hosts/sdrweb/default.nix
@@ -1,4 +1,4 @@
-{ config, hostRegistry, pkgs, ... }:
+{ hostRegistry, pkgs, ... }:
 {
   deployment = {
     mem = 4096;
diff --git a/hosts/server10/default.nix b/hosts/server10/default.nix
index 0ef9d371..8db5327b 100644
--- a/hosts/server10/default.nix
+++ b/hosts/server10/default.nix
@@ -1,4 +1,4 @@
-{ config, ... }:
+{ ... }:
 
 {
   imports = [
diff --git a/overlays/bmxd.nix b/overlays/bmxd.nix
index 4bec93ed..e585cc97 100644
--- a/overlays/bmxd.nix
+++ b/overlays/bmxd.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, writeScript, runtimeShell }:
+{ stdenv, fetchgit }:
 
 stdenv.mkDerivation {
   pname = "bmxd";