anchor.diff: -{ lib, fetchurl, python3Packages, lzop, postgresql, pv }:
  +{ lib, fetchFromGitHub, python3Packages, lzop, postgresql, pv }:
   
   python3Packages.buildPythonApplication rec {
     pname = "wal-e";
  
positive.code: 
    namePrefix = "";
  
    src = fetchurl {
      url = "https://github.com/wal-e/wal-e/archive/v${version}.tar.gz";
      sha256 = "5TTd7NTO73+MCJf3dHIcNojjHdoaKJ1T051iW7Kt9Ow=";
    };
  
    # needs tox
  
negative.code:   meta = {
      description = "A Postgres WAL-shipping disaster recovery and replication toolkit";
      homepage = "https://github.com/wal-e/wal-e";
      maintainers = [ ];
      license = lib.licenses.bsd3;
      platforms = lib.platforms.linux;
    };
  