{
  pkgs,
  ...
}: let
  ledgerDirectory = "/home/kfm/sync/src/ledger";
  hora = pkgs.callPackage ../packages/hora.nix { timeLedger = "${ledgerDirectory}/time.timeclock"; };
in {
  environment.systemPackages = let
    git = "${pkgs.git}/bin/git -C ${ledgerDirectory}";
  in [
    hora
    pkgs.hledger
    (pkgs.writers.writeDashBin "hledger-git" ''
      if [ "$1" = entry ]; then
        ${pkgs.hledger}/bin/hledger balance -V > "${ledgerDirectory}/balance.txt"
        ${git} add balance.txt
        ${git} commit --all --message="$(date -Im)"
      else
        ${git} $*
      fi
    '')
    (pkgs.writers.writeDashBin "hledger-edit" ''
      $EDITOR ${ledgerDirectory}/current.journal
    '')
  ];
}