anchor.diff:      sha256 = "01b2gnsq0x4fd9na8zpk6pajym55mbz64hgzawlwxdw0y6681kr5";
     });
     foundation = dontCheck super.foundation;
  -  chell = overrideCabal (doJailbreak super.chell) (_drv: {
  -    broken = false;
  -  });
     haskell-src-meta = appendPatch (dontCheck (doJailbreak super.haskell-src-meta)) (pkgs.fetchpatch {
       url = "https://gitlab.haskell.org/ghc/head.hackage/raw/master/patches/haskell-src-meta-0.8.3.patch";
       sha256 = "1asl932mibr5y057xx8v1a7n3qy87lcnclsfh8pbxq1m3iwjkxy8";
  
positive.code:   easytest_0_3 = markBroken super.easytest_0_3;
    haskell-src = markBrokenVersion "1.0.3.0" super.haskell-src;
  
    # use latest version to fix the build
    hackage-db = self.hackage-db_2_1_0;
    lens = self.lens_4_18_1;
    memory = self.memory_0_15_0;
    microlens = self.microlens_0_4_11_2;
    regex-pcre-builtin = self.regex-pcre-builtin_0_95_0_8_8_35;
    shelly = self.shelly_1_9_0;
    string-qq = self.string-qq_0_0_4;
    tls = self.tls_1_5_1;
    xmonad-contrib = self.xmonad-contrib_0_16;
  
  }
  
negative.code:     sha256 = "1v40gmnw4lqyk271wngdwz8whpfdhmza58srbkka8icwwwrck3l5";
    });
  
    # https://github.com/sol/hpack/issues/371
    hpack = appendPatch super.hpack (pkgs.fetchpatch {
      url = "https://gitlab.haskell.org/ghc/head.hackage/raw/master/patches/hpack-0.32.0.patch";
  