suggestions

[Artturin]

• lint for configureFlags which are not lists
  ex.
  configureFlags = "--with-lua=yes";
  should be
  configureFlags = [ "--with-lua=yes" ];
  more examples https://github.com/NixOS/nixpkgs/pull/44423/files
  for stdenv: Deprecate string configureFlags NixOS/nixpkgs#45886

• lint a single file, currently only whole dirs can be linted
  will be needed for ci usage

$ nix run github:siraben/nix-lint -- ./pkgs/top-level/all-packages.nix
✔ What anti-pattern do you want to debug? ·
Error: ENOTDIR: not a directory, scandir './pkgs/top-level/all-packages.nix'
    at readdirSync (node:fs:1392:3)
    at /nix/store/mka1y2a48sdq8gw254ibxdyllcj1pkzb-nix-lint/libexec/nix-lint/deps/nix-lint/built/index.js:84:34
    at step (/nix/store/mka1y2a48sdq8gw254ibxdyllcj1pkzb-nix-lint/libexec/nix-lint/deps/nix-lint/built/index.js:34:23)
    at Object.next (/nix/store/mka1y2a48sdq8gw254ibxdyllcj1pkzb-nix-lint/libexec/nix-lint/deps/nix-lint/built/index.js:15:53)
    at /nix/store/mka1y2a48sdq8gw254ibxdyllcj1pkzb-nix-lint/libexec/nix-lint/deps/nix-lint/built/index.js:9:71
    at new Promise (<anonymous>)
    at __awaiter (/nix/store/mka1y2a48sdq8gw254ibxdyllcj1pkzb-nix-lint/libexec/nix-lint/deps/nix-lint/built/index.js:5:12)
    at recurseDir (/nix/store/mka1y2a48sdq8gw254ibxdyllcj1pkzb-nix-lint/libexec/nix-lint/deps/nix-lint/built/index.js:82:12)
    at /nix/store/mka1y2a48sdq8gw254ibxdyllcj1pkzb-nix-lint/libexec/nix-lint/deps/nix-lint/built/index.js:152:86
    at Array.map (<anonymous>) {
  errno: -20,
  syscall: 'scandir',
  code: 'ENOTDIR',
  path: './pkgs/top-level/all-packages.nix'
}