From a899d5b15968ca90c33ecc335d80321a1f8be612 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Leonardo=20Eug=C3=AAnio?= <lelgenio@disroot.org>
Date: Thu, 27 Mar 2025 01:07:27 -0300
Subject: [PATCH] home: add automatic home-manager cleanup service

---
 user/home-manager.nix | 28 ++++++++++++++++++++++++++++
 user/home.nix         |  3 +--
 2 files changed, 29 insertions(+), 2 deletions(-)
 create mode 100644 user/home-manager.nix

diff --git a/user/home-manager.nix b/user/home-manager.nix
new file mode 100644
index 0000000..9c8452a
--- /dev/null
+++ b/user/home-manager.nix
@@ -0,0 +1,28 @@
+{ pkgs, lib, ... }:
+{
+  programs.home-manager.enable = true;
+
+  systemd.user.services.home-manager-expire = {
+    Unit = {
+      Description = "Remove old home-manager generations";
+    };
+    Service = {
+      Type = "oneshot";
+      ExecStart = pkgs.writeShellScript "home-manager-expire" ''
+        ${lib.getExe pkgs.home-manager} expire-generations 7d
+      '';
+    };
+  };
+  systemd.user.timers.home-manager-expire = {
+    Unit = {
+      Description = "Remove old home-manager generations";
+    };
+    Timer = {
+      OnCalendar = "daily";
+      Unit = "home-manager-expire.service";
+    };
+    Install = {
+      WantedBy = [ "timers.target" ];
+    };
+  };
+}
diff --git a/user/home.nix b/user/home.nix
index 271ceee..31e3871 100644
--- a/user/home.nix
+++ b/user/home.nix
@@ -9,6 +9,7 @@
 {
   imports = [
     ./dummy.nix
+    ./home-manager.nix
     ./waybar
     ./helix.nix
     ./kakoune
@@ -58,8 +59,6 @@
   home.username = "lelgenio";
   home.homeDirectory = "/home/lelgenio";
 
-  # Let Home Manager install and manage itself.
-  programs.home-manager.enable = true;
   home.packages = with pkgs; [
     terminal