nixos: services: use 'postgresql.target'

This is now the more correct dependency to use in service definitions,
to guarantee read-write access with users and permissions.

modules/nixos/services/drone/server/default.nix

@@ -6,8 +6,8 @@ in
   config = lib.mkIf cfg.enable {
     systemd.services.drone-server = {
       wantedBy = [ "multi-user.target" ];
-      after = [ "postgresql.service" ];
-      requires = [ "postgresql.service" ];
+      after = [ "postgresql.target" ];
+      requires = [ "postgresql.target" ];
       serviceConfig = {
         EnvironmentFile = [
           cfg.secretFile

modules/nixos/services/tandoor-recipes/default.nix

@@ -49,8 +49,8 @@ in
 
     systemd.services = {
       tandoor-recipes = {
-        after = [ "postgresql.service" ];
-        requires = [ "postgresql.service" ];
+        after = [ "postgresql.target" ];
+        requires = [ "postgresql.target" ];
 
         serviceConfig = {
           EnvironmentFile = cfg.secretKeyFile;

modules/nixos/services/woodpecker/server/default.nix

@@ -24,8 +24,8 @@ in
     };
 
     systemd.services.woodpecker-server = {
-      after = [ "postgresql.service" ];
-      requires = [ "postgresql.service" ];
+      after = [ "postgresql.target" ];
+      requires = [ "postgresql.target" ];
 
       serviceConfig = {
         # Set username for DB access