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

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Nix

{ config, pkgs, lib, ... }:
let
daysBeforeDeletion = 2;
cfg = config.programs.neovim.auto-clean-swapfiles;
in
{
options.programs.neovim.auto-clean-swapfiles = {
enable = lib.mkEnableOption "automatic cleanup of neovim swapfiles";
daysBeforeDeletion = lib.mkOption {
type = lib.types.ints.positive;
default = 2;
example = 7;
description = "How long many days old the swapfile should be before it gets cleaned up";
};
onCalendar = lib.mkOption {
type = lib.types.str;
default = "daily";
example = "weekly";
# TODO: link to systemd manpage for format.
description = "How often to run the cleanup.";
};
};
config = lib.mkIf cfg.enable {
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 +${toString cfg.daysBeforeDeletion})
if [ -z "$OLD_SWAPFILES" ]; then
echo "No old swap files found"
exit 0
fi
for swapfile in $OLD_SWAPFILES; do
echo "Removing $swapfile"
rm -- "$swapfile" || echo "Could not remove $swapfile, is it still in use?"
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 = cfg.onCalendar;
Persistent = true;
};
Install = {
WantedBy = [ "timers.target" ];
};
};
};
}