anchor.diff:        happy = callPackage ({ Cabal, array, base, containers, directory, filepath, mkDerivation, mtl, stdenv }:
         mkDerivation {
             pname = "happy";
  -          version = "1.19.7";
  -          sha256 = "bb312a9e63d5295cca3e94ebe32d7c094216d7d9dafee3edb45c847b45126f9b";
  -          revision = "1";
  -          editedCabalFile = "1w0sm3qn1icxiiif6355pr6cwd9bqfh56g8qc5hycagcnms8hip1";
  +          version = "1.19.8";
  +          sha256 = "4df739965d559e48a9b0044fa6140241c07e8f3c794c6c0a6323024fd7f0d3a0";
             isLibrary = false;
             isExecutable = true;
             setupHaskellDepends = [
  
positive.code:           description = "Cardano SL - the SSC class";
            license = stdenv.lib.licenses.mit;
          }) {};
        cardano-sl-tools = callPackage ({ Chart, Chart-diagrams, Glob, MonadRandom, QuickCheck, aeson, ansi-wl-pprint, array, async, attoparsec, base, base58-bytestring, bytestring, canonical-json, cardano-report-server, cardano-sl, cardano-sl-core, cardano-sl-db, cardano-sl-infra, cardano-sl-lrc, cardano-sl-ssc, cardano-sl-txp, containers, cpphs, cryptonite, data-default, directory, ed25519, ether, fgl, filepath, foldl, formatting, graphviz, kademlia, lens, log-warper, mkDerivation, mtl, neat-interpolation, node-sketch, optparse-applicative, parsec, pipes, pipes-bytestring, pipes-interleave, pipes-safe, process, random, random-shuffle, safe-exceptions, serokell-util, stdenv, stm, system-filepath, tar, text, text-format, time, time-units, universum, unix-compat, unordered-containers, vector, yaml }:
        mkDerivation {
            pname = "cardano-sl-tools";
            version = "1.0.1";
  
negative.code:             graphviz
              kademlia
              lens
              lifted-async
              log-warper
              MonadRandom
              mtl
  