anchor.diff:      runHook postInstall
     '';
   
  -  # A few tests fail on aarch64
  -  doCheck = !stdenv.isAarch64;
  +  # A few tests fail on aarch64-linux
  +  doCheck = !(stdenv.isLinux && stdenv.isAarch64);
   
     meta = with lib; {
       description = "A tool to extract files from visual novel archives";
  
positive.code: { lib, stdenv, fetchFromGitHub, cmake, makeWrapper, boost, libpng, libiconv
  , libjpeg, zlib, openssl, libwebp, catch }:
  
  stdenv.mkDerivation rec {
    pname = "arc_unpacker";
  
negative.code:     sha256 = "1xxrc9nww0rla3yh10z6glv05ax4rynwwbd0cdvkp7gyqzrv97xp";
    };
  
    nativeBuildInputs = [ cmake makeWrapper catch2 ];
    buildInputs = [ boost libpng libjpeg zlib openssl libwebp ]
      ++ lib.optionals stdenv.isDarwin [ libiconv ];
  
    postPatch = ''
      cp ${catch2}/include/catch2/catch.hpp tests/test_support/catch.h
    '';
  
    checkPhase = ''
  