diff --git a/modules/prometheus/alert-rules.nix b/modules/prometheus/alert-rules.nix
index 45613883..23f66ab5 100644
--- a/modules/prometheus/alert-rules.nix
+++ b/modules/prometheus/alert-rules.nix
@@ -52,11 +52,9 @@ lib.mapAttrsToList
     # };
 
     filesystem_full_80percent = {
-      condition = ''
-        100 - ((node_filesystem_avail_bytes{fstype!="rootfs",mountpoint="/"} * 100) / node_filesystem_size_bytes{fstype!="rootfs",mountpoint="/"}) > 80'';
+      condition = ''100 - ((node_filesystem_avail_bytes{fstype!="rootfs",mountpoint="/"} * 100) / node_filesystem_size_bytes{fstype!="rootfs",mountpoint="/"}) > 80'';
       time = "10m";
-      description =
-        "{{$labels.instance}} device {{$labels.device}} on {{$labels.mountpoint}} got less than 20% space left on its filesystem.";
+      description = "{{$labels.instance}} device {{$labels.device}} on {{$labels.mountpoint}} got less than 20% space left on its filesystem.";
     };
 
     # filesystem_inodes_full = {
@@ -105,17 +103,14 @@ lib.mapAttrsToList
     # };
 
     swap_using_20percent = {
-      condition =
-        "node_memory_SwapTotal_bytes - (node_memory_SwapCached_bytes + node_memory_SwapFree_bytes) > node_memory_SwapTotal_bytes * 0.2";
+      condition = "node_memory_SwapTotal_bytes - (node_memory_SwapCached_bytes + node_memory_SwapFree_bytes) > node_memory_SwapTotal_bytes * 0.2";
       time = "30m";
-      description =
-        "{{$labels.instance}} is using 20% of its swap space for at least 30 minutes.";
+      description = "{{$labels.instance}} is using 20% of its swap space for at least 30 minutes.";
     };
 
     systemd_service_failed = {
       condition = ''node_systemd_unit_state{state="failed"} == 1'';
-      description =
-        "{{$labels.instance}} failed to (re)start service {{$labels.name}}.";
+      description = "{{$labels.instance}} failed to (re)start service {{$labels.name}}.";
     };
 
     restic_backup_too_old = {
@@ -134,19 +129,15 @@ lib.mapAttrsToList
     # };
 
     ram_using_90percent = {
-      condition =
-        "node_memory_Buffers_bytes + node_memory_MemFree_bytes + node_memory_Cached_bytes < node_memory_MemTotal_bytes * 0.1";
+      condition = "node_memory_Buffers_bytes + node_memory_MemFree_bytes + node_memory_Cached_bytes < node_memory_MemTotal_bytes * 0.1";
       time = "1h";
-      description =
-        "{{$labels.instance}} is using at least 90% of its RAM for at least 1 hour.";
+      description = "{{$labels.instance}} is using at least 90% of its RAM for at least 1 hour.";
     };
 
     cpu_using_90percent = {
-      condition = ''
-        100 - (avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[5m])) * 100) >= 90'';
+      condition = ''100 - (avg by (instance) (irate(node_cpu_seconds_total{mode="idle"}[5m])) * 100) >= 90'';
       time = "10m";
-      description =
-        "{{$labels.instance}} is running with cpu usage > 90% for at least 10 minutes: {{$value}}";
+      description = "{{$labels.instance}} is running with cpu usage > 90% for at least 10 minutes: {{$value}}";
     };
 
     reboot = {
@@ -156,18 +147,16 @@ lib.mapAttrsToList
 
     uptime = {
       condition = "(time() - node_boot_time_seconds ) / (60*60*24) > 30";
-      description =
-        "Uptime monster: {{$labels.instance}} has been up for more than 30 days.";
+      description = "Uptime monster: {{$labels.instance}} has been up for more than 30 days.";
     };
 
     flake_nixpkgs_outdated = {
-      condition = ''
-        (time() - flake_input_last_modified{input="nixpkgs"}) / (60*60*24) > 30'';
-      description =
-        "Nixpkgs outdated: Nixpkgs on {{$labels.instance}} has not been updated in 30 days";
+      condition = ''(time() - flake_input_last_modified{input="nixpkgs"}) / (60*60*24) > 30'';
+      description = "Nixpkgs outdated: Nixpkgs on {{$labels.instance}} has not been updated in 30 days";
     };
 
-    /* ping = {
+    /*
+      ping = {
       condition = "ping_result_code{type!='mobile'} != 0";
       description = "{{$labels.url}}: ping from {{$labels.instance}} has failed!";
       };
@@ -178,12 +167,11 @@ lib.mapAttrsToList
       };
     */
     http_status = {
-      condition = ''
-        probe_http_status_code{instance!~"https://megaclan3000.de"} != 200'';
-      description =
-        "http request failed from {{$labels.instance}}: {{$labels.result}}!";
+      condition = ''probe_http_status_code{instance!~"https://megaclan3000.de"} != 200'';
+      description = "http request failed from {{$labels.instance}}: {{$labels.result}}!";
     };
-    /* http_match_failed = {
+    /*
+      http_match_failed = {
       condition = "http_response_response_string_match == 0";
       description = "{{$labels.server}} : http body not as expected; status code: {{$labels.status_code}}!";
       };
@@ -206,8 +194,7 @@ lib.mapAttrsToList
     */
     cert_expiry = {
       condition = "(probe_ssl_earliest_cert_expiry - time())/(3600*24) < 30";
-      description =
-        "{{$labels.instance}}: The TLS certificate will expire in less than 30 days: {{$value}}s";
+      description = "{{$labels.instance}}: The TLS certificate will expire in less than 30 days: {{$value}}s";
     };
 
     # ignore devices that disabled S.M.A.R.T (example if attached via USB)
@@ -223,7 +210,8 @@ lib.mapAttrsToList
       description = "{{$labels.instance}}: OOM kill detected";
     };
 
-    /* unusual_disk_read_latency = {
+    /*
+      unusual_disk_read_latency = {
       condition =
       "rate(diskio_read_time[1m]) / rate(diskio_reads[1m]) > 0.1 and rate(diskio_reads[1m]) > 0";
       description = ''
@@ -242,8 +230,7 @@ lib.mapAttrsToList
 
     host_memory_under_memory_pressure = {
       condition = "rate(node_vmstat_pgmajfault[1m]) > 1000";
-      description =
-        "{{$labels.instance}}: The node is under heavy memory pressure. High rate of major page faults: {{$value}}";
+      description = "{{$labels.instance}}: The node is under heavy memory pressure. High rate of major page faults: {{$value}}";
     };
 
     # ext4_errors = {
diff --git a/modules/prometheus/default.nix b/modules/prometheus/default.nix
index a402f35d..04a9e384 100644
--- a/modules/prometheus/default.nix
+++ b/modules/prometheus/default.nix
@@ -84,15 +84,19 @@
     ];
 
     ruleFiles = [
-      (pkgs.writeText "prometheus-rules.yml" (builtins.toJSON {
-        groups = [{
-          name = "alerting-rules";
-          rules = import ./alert-rules.nix { inherit lib; };
-        }];
-      }))
+      (pkgs.writeText "prometheus-rules.yml" (
+        builtins.toJSON {
+          groups = [
+            {
+              name = "alerting-rules";
+              rules = import ./alert-rules.nix { inherit lib; };
+            }
+          ];
+        }
+      ))
     ];
 
-    alertmanagers = [{ static_configs = [{ targets = [ "localhost:9093" ]; }]; }];
+    alertmanagers = [ { static_configs = [ { targets = [ "localhost:9093" ]; } ]; } ];
 
     alertmanager = {
       enable = true;
@@ -109,22 +113,26 @@
           repeat_interval = "24h";
         };
 
-        receivers = [{
-          name = "all";
-          # Email config documentation: https://prometheus.io/docs/alerting/latest/configuration/#email_config
-          email_configs = [{
-            send_resolved = true;
-            to = "TODO";
-            from = "alerts@pub.solar";
-            smarthost = "TODO";
-            auth_username = "TODO";
-            auth_password_file = "${config.age.secrets.nachtigall-alertmanager-smtp-password.path}";
-            require_tls = true;
-          }];
-          # TODO:
-          # For matrix notifications, look into: https://github.com/pinpox/matrix-hook and add a webhook
-          #   webhook_configs = [ { url = "http://127.0.0.1:11000/alert"; } ];
-        }];
+        receivers = [
+          {
+            name = "all";
+            # Email config documentation: https://prometheus.io/docs/alerting/latest/configuration/#email_config
+            email_configs = [
+              {
+                send_resolved = true;
+                to = "TODO";
+                from = "alerts@pub.solar";
+                smarthost = "TODO";
+                auth_username = "TODO";
+                auth_password_file = "${config.age.secrets.nachtigall-alertmanager-smtp-password.path}";
+                require_tls = true;
+              }
+            ];
+            # TODO:
+            # For matrix notifications, look into: https://github.com/pinpox/matrix-hook and add a webhook
+            #   webhook_configs = [ { url = "http://127.0.0.1:11000/alert"; } ];
+          }
+        ];
       };
     };
   };