chore: refactor system modules

system/dev/default.nix

@@ -0,0 +1,3 @@
+{
+  imports = [./docker.nix];
+}

system/dev/docker.nix

@@ -0,0 +1,32 @@
+{
+  lib,
+  config,
+  ...
+}:
+with lib; let
+  cfg = config.system.dev.docker;
+in {
+  options.system.dev.docker = {
+    enable = mkEnableOption "Enable Docker";
+    podman.enable = mkEnableOption "Enable Podman rather than Docker";
+    nvidia.enable = mkEnableOption "Activate Nvidia support";
+    autoprune.enable = mkEnableOption "Enable autoprune";
+  };
+
+  config = {
+    virtualisation = {
+      docker = mkIf (cfg.enable && !cfg.podman.enable) {
+        enable = true;
+        enableNvidia = cfg.nvidia.enable;
+        autoPrune.enable = cfg.autoprune.enable;
+      };
+      podman = mkIf cfg.podman.enable {
+        enable = true;
+        dockerCompat = cfg.enable;
+        enableNvidia = cfg.nvidia.enable;
+        dockerSocket.enable = cfg.enable;
+        autoPrune.enable = cfg.autoprune.enable;
+      };
+    };
+  };
+}