initial commit

services/postgresql/default.nix

@@ -0,0 +1,6 @@
+{
+  imports = [
+    ./options.nix
+    ./service.nix
+  ];
+}

services/postgresql/options.nix

@@ -0,0 +1,14 @@
+{ lib, ... }:
+with lib;
+{
+  options.machine.postgresql = {
+    enable = mkEnableOption "Postgresql";
+    port = mkOption {
+      type = types.port;
+      default = 5432;
+      description = ''
+        The port on which PostgreSQL listens.
+      '';
+    };
+  };
+}

services/postgresql/service.nix

@@ -0,0 +1,29 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  inherit (config.machine.postgresql)
+    port
+    enable
+    ;
+in
+with lib; mkIf enable {
+  services.postgresql = {
+    inherit enable;
+    settings = {
+      inherit port;
+    };
+    ensureDatabases = [ ];
+    enableTCPIP = true;
+    authentication = mkOverride 10 ''
+      #type database DBuser origin-address auth-method
+      local all      all                   trust
+      host  all      all    127.0.0.1/32   trust
+      host  all      all    ::1/128        trust
+      host  all      all    0.0.0.0/0      md5
+    '';
+  };
+}