# Claude Code at the exact version Claude Desktop is built against: the app's
# Code tab runs it. Unpatched, the app downloads this same file at run time
# into ~/.config/Claude/claude-code, where NixOS can't run it; default.nix
# points the app here instead.
#
# To update (after changing the app's version): the app's pin is in its
# app.asar, in the JSON with "baseUrl":"https://downloads.claude.ai/claude-code-releases".
# Take "version" and platforms."linux-x64".checksum from it:
#   asar extract .../resources/app.asar /tmp/app
#   grep -o '{"version":"[0-9.]*","manifest".\{0,1500\}' /tmp/app/.vite/build/*.js
# The app's build fails with a message if the two versions disagree.
{
  lib,
  stdenv,
  fetchurl,
  zstd,
  autoPatchelfHook,
}:

stdenv.mkDerivation (finalAttrs: {
  pname = "claude-code-for-desktop";
  version = "2.1.299";

  src = fetchurl {
    url = "https://downloads.claude.ai/claude-code-releases/${finalAttrs.version}/linux-x64/claude.zst";
    sha256 = "20ca25213130255bacdcae3ed5df3fc99e1d8e86cdf46e9188b7ff9c1b478fa4";
  };

  nativeBuildInputs = [
    zstd
    autoPatchelfHook
  ];

  dontUnpack = true;
  # The program's JavaScript is appended to the executable; strip would cut it.
  dontStrip = true;

  installPhase = ''
    runHook preInstall
    install -d $out/bin
    zstd -d $src -o $out/bin/claude
    chmod 755 $out/bin/claude
    runHook postInstall
  '';

  doInstallCheck = true;
  installCheckPhase = ''
    HOME=$TMPDIR $out/bin/claude --version | grep -F ${finalAttrs.version}
  '';

  meta = {
    description = "Claude Code, the version Claude Desktop's Code tab runs";
    homepage = "https://claude.com/claude-code";
    license = lib.licenses.unfree;
    mainProgram = "claude";
    platforms = [ "x86_64-linux" ];
    sourceProvenance = [ lib.sourceTypes.binaryNativeCode ];
  };
})