diff --git a/modules/base.py b/modules/base.py
new file mode 100644
index 0000000..d9b4631
--- /dev/null
+++ b/modules/base.py
@@ -0,0 +1,46 @@
+from decman import File, Module
+from decman.plugins.aur import packages as aur_packages
+from decman.plugins.pacman import packages as pacman_packages
+
+
+class BaseModule(Module):
+    def __init__(self):
+        super().__init__("base")
+
+    def files(self):
+        return {
+            "/etc/pacman.d/mirrorlist": File(
+                source_file="./system/etc/pacman.d/mirrorlist",
+            ),
+            "/etc/sudoers.d/10-wheel": File(
+                source_file="./system/etc/sudoers.d/10-wheel",
+                permissions=0o440,
+            ),
+        }
+
+    @pacman_packages
+    def pacman_packages(self) -> set[str]:
+        return {
+            "base-devel",
+            "bat",
+            "bun",
+            "curl",
+            "fd",
+            "git",
+            "mise",
+            "neovim",
+            "nodejs",
+            "ripgrep",
+            "sudo",
+            "trash-cli",
+            "vim",
+            "wget",
+            "zoxide",
+        }
+
+    @aur_packages
+    def aur_packages(self) -> set[str]:
+        return {
+            "decman",
+            "yay",
+        }
diff --git a/source.py b/source.py
index 2843be2..26afb8c 100644
--- a/source.py
+++ b/source.py
@@ -10,8 +10,8 @@ Arch Linux 声明式系统配置 — decman
 import os
 
 import decman
-from decman import File
 
+import modules.base
 import modules.docker
 import modules.locale
 import modules.zsh
@@ -24,46 +24,11 @@ assert decman.systemd is not None
 USERNAME = os.environ.get("SUDO_USER")
 if not USERNAME:
     raise decman.SourceError("请使用 sudo decman 运行")
-HOME = f"/home/{USERNAME}"
-
-# ── 系统文件（/etc/）──────────────────────────────────────────
-decman.files["/etc/pacman.d/mirrorlist"] = File(
-    source_file="./system/etc/pacman.d/mirrorlist",
-)
-
-decman.files["/etc/sudoers.d/10-wheel"] = File(
-    source_file="./system/etc/sudoers.d/10-wheel",
-    permissions=0o440,
-)
 
 # ── Modules ──────────────────────────────────────────────────
 decman.modules += [
+    modules.base.BaseModule(),
     modules.locale.LocaleModule(),
     modules.docker.DockerModule(),
     modules.zsh.ZshModule(USERNAME),
 ]
-
-# ── Pacman 包（官方仓库）──────────────────────────────────────
-decman.pacman.packages |= {
-    "base-devel",
-    "bat",
-    "bun",
-    "curl",
-    "fd",
-    "git",
-    "mise",
-    "neovim",
-    "nodejs",
-    "ripgrep",
-    "sudo",
-    "trash-cli",
-    "vim",
-    "wget",
-    "zoxide",
-}
-
-# ── AUR 包 ────────────────────────────────────────────────────
-decman.aur.packages |= {
-    "decman",
-    "yay",
-}