{
  lib,
  fetchzip,
  runCommand,
}:

# The Vale style packages named in `.vale.ini`, fetched at build time and
# laid out as Vale expects a `StylesPath`: `<out>/<Package>/<rule>.yml`.
# Each is the release asset `vale sync` would download, pinned to a tag and
# hash so a lint run makes no network request and every caller sees the
# same rules. Bumping a style means changing its `tag` and `hash` here.
let
  styles = {
    Microsoft = {
      tag = "v0.15.1";
      hash = "sha256-NqH69LL8aKMqyoo5qWi/hFAkYA4WL7OCfTpPwR907vU=";
    };
    alex = {
      tag = "v0.2.3";
      hash = "sha256-YvNfhjCg437wDMxnOqu9xTKq82KZfQt9HvCpoDfwsL4=";
    };
    write-good = {
      tag = "v0.4.1";
      hash = "sha256-XhvZtirGg9Vl/i73HMyZpK2iSoQoXv8OS7ckryveIdU=";
    };
  };

  fetch =
    name:
    { tag, hash }:
    fetchzip {
      url = "https://github.com/vale-cli/${name}/releases/download/${tag}/${name}.zip";
      inherit hash;
      stripRoot = false;
    };
in
runCommand "vale-styles" { } ''
  mkdir -p $out
  ${lib.concatStrings (lib.mapAttrsToList (name: s: "ln -s ${fetch name s} $out/${name}\n") styles)}
''