anchor.diff:        ++ lib.optionals (!is20) [ curl perl ]
         ++ lib.optionals fromGit [ autoreconfHook autoconf-archive bison flex libxml2 libxslt docbook5 docbook5_xsl ];
   
  -    buildInputs = [ curl openssl sqlite xz ]
  +    buildInputs = [ curl openssl sqlite xz bzip2 ]
         ++ lib.optional (stdenv.isLinux || stdenv.isDarwin) libsodium
         ++ lib.optionals fromGit [ brotli ] # Since 1.12
         ++ lib.optional stdenv.isLinux libseccomp
  
positive.code:     separateDebugInfo = stdenv.isLinux;
  
      crossAttrs = {
        postUnpack =
          '' export CPATH="${bzip2.crossDrv}/include"
             export NIX_CROSS_LDFLAGS="-L${bzip2.crossDrv}/lib -rpath-link ${bzip2.crossDrv}/lib $NIX_CROSS_LDFLAGS"
          '';
  
        configureFlags =
          ''
            --with-store-dir=${storeDir} --localstatedir=${stateDir}
  
negative.code:           });
  
      propagatedBuildInputs = [ boehmgc ];
  
      configureFlags =
        [ "--with-store-dir=${storeDir}"
  