diff --git a/home/roles/base-darwin/default.nix b/home/roles/base-darwin/default.nix
index 1b89696..cc2503d 100644
--- a/home/roles/base-darwin/default.nix
+++ b/home/roles/base-darwin/default.nix
@@ -4,4 +4,8 @@
   imports = [
     ../aerospace
   ];
+
+  # Override to use -d instead of --delete-older-than on Darwin due to launchd bug
+  # https://github.com/nix-community/home-manager/issues/7211
+  nix.gc.options = "-d";
 }
diff --git a/home/roles/base/default.nix b/home/roles/base/default.nix
index d529a8d..31adcae 100644
--- a/home/roles/base/default.nix
+++ b/home/roles/base/default.nix
@@ -24,6 +24,17 @@ in
       tree
     ];
 
+    # Automatic garbage collection for user profile (home-manager generations).
+    # This complements system-level gc which only cleans system generations.
+    # - Linux: Uses --delete-older-than to keep 10-day rollback window
+    # - Darwin: Overridden to use -d in base-darwin role to avoid launchd bug
+    #   (https://github.com/nix-community/home-manager/issues/7211)
+    nix.gc = {
+      automatic = true;
+      randomizedDelaySec = mkIf pkgs.stdenv.isLinux "14m";
+      options = "--delete-older-than 10d";
+    };
+
     # Essential programs everyone needs
     programs.bash = {
       enable = true;