This isn't working for me (pkgs.haskell.lib.compose.disableCabalFlag "hlint" pkgs.haskell-language-server)

LATITUDE-NIXOS hs/aoc25 » nix-shell                                                                         127 ↵
fetching path input 'path:/nix/store/3w2nr2aq2gp76nb6lh1alx6h10mwvp5d-source'
building '/nix/store/mlbpkxipyf763cm4hcanls6wp3mm5vb1-cabal2nix-aoc25.drv'...
error:
       … while evaluating an expression to select 'drvPath' on it
         at «internal»:1:552:
       … while evaluating strict
         at «internal»:1:552:
       (stack trace truncated; use '--show-trace' to show the full trace)

       error: function 'anonymous lambda' called with unexpected argument 'mkDerivation'
       at /nix/store/3w2nr2aq2gp76nb6lh1alx6h10mwvp5d-source/pkgs/development/tools/haskell/haskell-language-server/withWrapper.nix:1:1:
            1| {
             | ^
            2|   lib,

       note: trace involved the following derivations:
       derivation 'aoc-shell'

maralorn: One last issue:
It doesn't actually look like I have the HLS for 9.12 in this dev environment.
I'm getting this error from the Emacs LSP mode:

haskell-language-server exe candidates: ["haskell-language-server-9.12.2","haskell-language-server"]
Failed to find a HLS version for GHC 9.12.2
Executable names we failed to find: haskell-language-server-9.12.2, haskell-language-server

Using this shell.nix:

{ pkgs ? import <nixpkgs> {} }:
let
  src = pkgs.nix-gitignore.gitignoreSource [] ./.;
  myPkg = pkgs.haskell.packages.ghc912.callCabal2nix "aoc25" src {};
in
pkgs.stdenv.mkDerivation {
  name = "aoc-shell";

  buildInputs = [
    myPkg.env.nativeBuildInputs

    pkgs.cabal-install
    pkgs.haskell-language-server
    pkgs.hlint
    pkgs.ormolu
  ];
}