Update configuration files

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

drupal-nix-flake/tools/nix/dev-shells.nix

@@ -0,0 +1,31 @@
+{ inputs, ... }:
+
+{
+  imports = [ inputs.devshell.flakeModule ];
+
+  perSystem =
+    { pkgs, ... }:
+    {
+      devshells.default =
+        with pkgs;
+        let
+          php = pkgs.php83.buildEnv {
+            extraConfig = ''
+              memory_limit = 128M
+            '';
+          };
+
+          phpPackages = pkgs.php83Packages;
+        in
+        {
+          packages = [
+            mariadb
+            php
+            phpPackages.composer
+            phpactor
+            pv
+            yamlfmt
+          ];
+        };
+    };
+}

drupal-nix-flake/tools/nix/process-compose.nix

@@ -0,0 +1,40 @@
+{ inputs, ... }:
+
+{
+  imports = [ inputs.process-compose.flakeModule ];
+
+  perSystem =
+    { pkgs, ... }:
+    let
+      databasePort = 3306;
+      httpPort = 8888;
+    in
+    {
+      process-compose."default" = {
+        imports = [
+          inputs.services.processComposeModules.default
+        ];
+
+        services = {
+          mysql."mysql" = {
+            enable = true;
+
+            initialDatabases = [
+              { name = "drupal_nix_flake_example"; }
+            ];
+
+            settings.mysqld.port = toString databasePort;
+          };
+        };
+
+        settings.processes.php = {
+          command = pkgs.writeShellApplication {
+            name = "drush-server";
+            text = "vendor/bin/drush runserver ${toString httpPort}";
+          };
+
+          depends_on."mysql".condition = "process_healthy";
+        };
+      };
+    };
+}

drupal-nix-flake/tools/nix/systems.nix

@@ -0,0 +1,5 @@
+{ inputs, ... }:
+
+{
+  systems = import inputs.systems;
+}