feat: big refactor

hosts/APPA/services/postgresql.nix

@@ -0,0 +1,19 @@
+{ config, ... }:
+{
+
+  services.postgresql = {
+    enable = true;
+    ensureDatabases = [ config.services.gitea.user ];
+
+    # type   database  DBuser  auth-method  mapping
+    authentication = ''
+      local  gitea     all     ident        map=gitea-users
+    '';
+
+    # name         sysuser  dbuser
+    identMap = ''
+      gitea-users  gitea    gitea
+    '';
+  };
+
+}