{
  lib,
  runCommand,
  writeShellScriptBin,
}:
{
  name,
  prefix ? "10-all-",
  dirs ? [
    "service"
    "mount"
    "socket"
    "timer"
    "target"
  ],

  dropinText ? null,
  extraCommands ? "",
  ...
}@args:

runCommand "${name}-dropin"
  (
    lib.removeAttrs args [
      "name"
    ]
    // {
      inherit dirs dropinText extraCommands;
    }
  )
  ''
    set -euo pipefail
    root=$out/lib/systemd/system
    for dir in $dirs ; do
      mkdir -p "$root/$dir".d
      printf "%s" "$dropinText" > "$root/$dir.d/${prefix}${name}.conf"
    done
    runHook extraCommands
  ''