diff --git a/flake.nix b/flake.nix
index 85e08db..84c656f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,9 +11,11 @@
           ./modules/openssh.nix
         ];
       };
-    in {
+    in
+    {
       devShell.x86_64-linux = pkgs.mkShell {
         buildInputs = with pkgs; [
+          nixpkgs-fmt
           terraform_0_14
           sops
         ];
@@ -22,7 +24,7 @@
       nixosConfigurations = {
         db1 = nixpkgs.lib.nixosSystem {
           system = "x86_64-linux";
-          modules = common.modules ++[
+          modules = common.modules ++ [
             ./modules/postgresql.nix
             ({
               environment.systemPackages = with pkgs; [
@@ -36,7 +38,7 @@
         };
         backend1 = nixpkgs.lib.nixosSystem {
           system = "x86_64-linux";
-          modules = common.modules ++[
+          modules = common.modules ++ [
             ./modules/murmur.nix
             ./modules/synapse.nix
             ({
diff --git a/modules/openssh.nix b/modules/openssh.nix
index f051e94..b4a0de4 100644
--- a/modules/openssh.nix
+++ b/modules/openssh.nix
@@ -2,6 +2,6 @@
 {
   services.openssh.enable = true;
   users.users.root.openssh.authorizedKeys.keyFiles = [
-     ../ssh_keys/phfroidmont-desktop.pub
+    ../ssh_keys/phfroidmont-desktop.pub
   ];
 }
diff --git a/modules/postgresql.nix b/modules/postgresql.nix
index b35c36d..4f5f809 100644
--- a/modules/postgresql.nix
+++ b/modules/postgresql.nix
@@ -10,4 +10,4 @@
     '';
   };
   users.users.postgres.extraGroups = [ "keys" ];
-}
\ No newline at end of file
+}
diff --git a/modules/synapse.nix b/modules/synapse.nix
index 95f56ad..271a0e9 100644
--- a/modules/synapse.nix
+++ b/modules/synapse.nix
@@ -3,8 +3,10 @@ let
   fqdn =
     let
       join = hostName: domain: hostName + lib.optionalString (domain != null) ".${domain}";
-    in join "matrix" config.networking.domain;
-in {
+    in
+    join "matrix" config.networking.domain;
+in
+{
   security.acme.email = "letsencrypt.account@banditlair.com";
   security.acme.acceptTerms = true;
 
@@ -30,18 +32,20 @@ in {
             # use 443 instead of the default 8448 port to unite
             # the client-server and server-server port for simplicity
             server = { "m.server" = "${fqdn}:443"; };
-          in ''
+          in
+          ''
             add_header Content-Type application/json;
             return 200 '${builtins.toJSON server}';
           '';
         locations."= /.well-known/matrix/client".extraConfig =
           let
             client = {
-              "m.homeserver" =  { "base_url" = "https://${fqdn}"; };
-              "m.identity_server" =  { "base_url" = "https://vector.im"; };
+              "m.homeserver" = { "base_url" = "https://${fqdn}"; };
+              "m.identity_server" = { "base_url" = "https://vector.im"; };
             };
-          # ACAO required to allow element-web on any URL to request this json file
-          in ''
+            # ACAO required to allow element-web on any URL to request this json file
+          in
+          ''
             add_header Content-Type application/json;
             add_header Access-Control-Allow-Origin *;
             return 200 '${builtins.toJSON client}';