[NixOS] Add postgres configuration

nixos/configuration.nix

@@ -24,6 +24,7 @@
     ./nixified.ai.nix
     ./options.nix
     ./plasma.nix
+    ./postgres.nix
     ./secrets.nix
     ./ssh.nix
     ./syncthing.nix

nixos/machines/ryzen-shine.nix

@@ -13,6 +13,7 @@
     port = 3090;
   };
   modules.gitea-runner.enable = true;
+  modules.postgres.enable = true;
 
   boot.loader.systemd-boot.configurationLimit = 5;
 

nixos/postgres.nix

@@ -0,0 +1,19 @@
+{ pkgs, config, makeEnable, ... }:
+makeEnable config "modules.postgres" false {
+  services.postgresql = {
+    enable = true;
+    package = pkgs.postgresql_15;
+    ensureDatabases = [ "railbird" "public" ];
+    authentication = pkgs.lib.mkOverride 10 ''
+      #type database  DBuser  CIDR-ADDRESS auth-method
+      local all       all                  trust
+      host  all       all  0.0.0.0/0       trust
+      host  all       all  ::1/128         trust
+    '';
+  };
+  services.pgadmin = {
+    enable = true;
+    initialEmail = "IvanMalison@gmail.com";
+    initialPasswordFile = (builtins.toFile "password" "This is the content of the file.");
+  };
+}