1 files changed, 7 insertions, 2 deletions

diff --git a/custom/btrfs-snapshots.nix b/custom/btrfs-snapshots.nix
index 31ff6df9..2722afc3 100644
--- a/custom/btrfs-snapshots.nix
+++ b/custom/btrfs-snapshots.nix
@@ -10,7 +10,7 @@ in {
   options = {
 
     services.btrfs-snapshots = {
-      enable = mkEnableOption "btrfs snapshot unit";   
+      enable = mkEnableOption "a systemd unit for btrfs snapshots";   
 
       mountPoint = mkOption {
         type = types.path;
@@ -26,6 +26,11 @@ in {
         type = types.bool;
         default = true;
       };
+
+      persist = mkOption {
+        type = types.bool;
+        default = false;
+      };
     };
 
   };
@@ -38,7 +43,7 @@ in {
 
       unitConfig = {
         AssertPathIsDirectory = cfg.mountPoint;
-        StopWhenUnneeded = true;
+        StopWhenUnneeded = !persist;
       };
 
       serviceConfig = with pkgs; {