home/neovim: add half-finished swapfile remover

home/home.nix

@@ -17,7 +17,7 @@ in {
     ./programs/git
     ./programs/gpg
     ./programs/less.nix
-    ./programs/neovim.nix
+    ./programs/neovim
     ./programs/nix-index
     ./programs/tealdeer
     ./programs/tmux.nix

home/programs/neovim/auto-clean-swapfiles.nix

@@ -0,0 +1,56 @@
+{ config, pkgs, lib, ... }:
+let
+  daysBeforeDeletion = 2;
+in
+{
+  config = {
+    systemd.user.services.clean-neovim-swap-files = {
+      Unit = {
+        Description = "Clean old swap files for neovim";
+      };
+
+      Service = {
+        Type = "oneshot";
+        CPUSchedulingPolicy = "idle";
+        IOSchedulingClass = "idle";
+        ExecStart = lib.getExe (pkgs.writeShellApplication {
+          name = "clean-neovim-swap-files";
+          runtimeInputs = with pkgs; [ findutils ];
+          text = ''
+            echo "Cleaning old swap files for neovim"
+
+            OLD_SWAPFILES=$(find "${config.xdg.stateHome}/nvim/swap" -type f -name '*.swp' -mtime +${toString daysBeforeDeletion})
+
+            if [ -z "$OLD_SWAPFILES" ]; then
+              echo "No old swap files found"
+              exit 0
+            fi
+
+            for swapfile in $OLD_SWAPFILES; do
+              echo "Removing $swapfile"
+              rm -- "$swapfile"
+            done
+
+            echo "Done"
+          '';
+        });
+      };
+    };
+
+    systemd.user.timers.clean-neovim-swap-files = {
+      Unit = {
+        Description = "Clean old swap files for neovim";
+      };
+
+      Timer = {
+        Unit = "clean-neovim-swap-files.service";
+        OnCalendar = "daily";
+        Persistent = true;
+      };
+
+      Install = {
+        WantedBy = [ "timers.target" ];
+      };
+    };
+  };
+}

home/programs/neovim/default.nix

@@ -1,5 +1,9 @@
 { pkgs, home, ... }:
 {
+  imports = [
+    ./auto-clean-swapfiles.nix
+  ];
+
   programs.neovim = {
     enable = true;