{ lib
, stdenv
, fetchurl
, patchelf
, glibc
}:

let
  version = "2.1.19";

  srcs = {
    aarch64-darwin = {
      url = "https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/${version}/darwin-arm64/claude";
      sha256 = "d386ac8f6d1479f85d31f369421c824135c10249c32087017d05a5f428852c41";
    };
    x86_64-darwin = {
      url = "https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/${version}/darwin-x64/claude";
      sha256 = "be266b3a952f483d8358ad141e2afe661170386506f479ead992319e4fdc38ac";
    };
    x86_64-linux = {
      url = "https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/${version}/linux-x64/claude";
      sha256 = "4e2a1c73871ecf3b133376b57ded03333a7a6387f2d2a3a6279bb90a07f7a944";
    };
    aarch64-linux = {
      url = "https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/${version}/linux-arm64/claude";
      sha256 = "8c4b61b24ca760d6f7aa2f19727163d122e9fd0c3ce91f106a21b6918a7b1bbb";
    };
  };

  src = srcs.${stdenv.hostPlatform.system} or (throw "Unsupported system: ${stdenv.hostPlatform.system}");

in stdenv.mkDerivation {
  pname = "claude-code";
  inherit version;

  src = fetchurl {
    inherit (src) url sha256;
  };

  dontUnpack = true;
  dontBuild = true;
  # Bun standalone binaries have JS code appended after the ELF sections
  # stripping/patching would remove or corrupt this appended data
  dontStrip = true;
  dontPatchELF = true;

  # Don't use autoPatchelfHook - it rewrites the ELF and strips the appended
  # bun bundle (the JS code is appended after the ELF sections)
  nativeBuildInputs = lib.optionals stdenv.isLinux [ patchelf ];

  installPhase = ''
    runHook preInstall

    install -Dm755 $src $out/bin/claude

    runHook postInstall
  '';

  # Manually patch the interpreter for bun standalone binaries
  # patchelf --set-interpreter modifies in-place without rewriting the entire ELF,
  # preserving the appended JS bundle that bun needs at runtime
  postFixup = lib.optionalString stdenv.isLinux ''
    interpreter="${glibc}/lib/${if stdenv.hostPlatform.system == "aarch64-linux" then "ld-linux-aarch64.so.1" else "ld-linux-x86-64.so.2"}"
    patchelf --set-interpreter "$interpreter" $out/bin/claude
  '';

  meta = with lib; {
    description = "Terminal-based AI coding assistant from Anthropic";
    homepage = "https://www.anthropic.com/claude-code";
    license = licenses.unfree;
    maintainers = [ ];
    platforms = [ "aarch64-darwin" "x86_64-darwin" "x86_64-linux" "aarch64-linux" ];
    mainProgram = "claude";
  };
}