webpack-cli: 5.1.4 -> 6.0.1

- `zig_0_9` and `zig_0_10` have been removed, you should upgrade to `zig_0_13` (also available as just `zig`), `zig_0_12` or `zig_0_11` instead.

- `webpack-cli` was updated to major version 6, which has breaking changes from the previous version 5.1.4. See the [upstream release notes](https://github.com/webpack/webpack-cli/releases/tag/webpack-cli%406.0.0) for details on these changes.

- `programs.less.lessopen` is now null by default. To restore the previous behaviour, set it to `''|${lib.getExe' pkgs.lesspipe "lesspipe.sh"} %s''`.

- `hardware.pulseaudio` has been renamed to `services.pulseaudio`.  The deprecated option names will continue to work, but causes a warning.

stdenv.mkDerivation (finalAttrs: {

  pname = "webpack-cli";

  version = "5.1.4";

  version = "6.0.1";

  src = fetchFromGitHub {

    owner = "webpack";

    repo = "webpack-cli";

    tag = "webpack-cli@${finalAttrs.version}";

    hash = "sha256-OjehyUw54n7/CKbDTVFCtcUp88tJCLUlBCJBQRXoyZM=";

    hash = "sha256-teQWaWWt3rKHEVbj3twt8WQXQO9HuzIBNuvFUfRmxqY=";

  };

  yarnKeepDevDeps = true;

  yarnOfflineCache = fetchYarnDeps {

    yarnLock = finalAttrs.src + "/yarn.lock";

    hash = "sha256-+SntrxvFoReQXqyFqnCRCx3nftzcNioQCw6IHe8GztI=";

    hash = "sha256-iYyH1/ZyNKq4MqMcCl7y5WvDnuGnRY0sj8hHsQhe7z4=";

  };

  nativeBuildInputs = [

    cd packages/webpack-cli

  '';

  # Removes dangling symlinks that are created as part of the `yarn pack` process.

  # They are not needed at runtime, so it's safe to remove them.

  postInstall = ''

    rm -rf $out/lib/node_modules/webpack-cli/node_modules/{.bin,webpack-cli,create-new-webpack-app,@webpack-cli}

  '';

  postFixup = ''

    mv $out/bin/webpack-cli $out/bin/webpack

  '';