anchor.diff:  { mkDerivation, aeson, aeson-pretty, base, base-unicode-symbols
  -, binary, bytestring, cairo, clock, containers, dependent-sum
  -, directory, dlist, exceptions, extra, fclabels, filepath, free
  -, freer-simple, generics-sop, ghc-prim, gi-cairo, gi-gobject
  -, gi-pango, gi-pangocairo, GLFW-b, Glob, hashable, haskell-gi-base
  -, hedgehog, hspec, hxt, JuicyPixels, lambdacube-compiler
  -, lambdacube-gl, lambdacube-ir, lens, lens-sop, linear, lub
  -, metamorphic, MissingH, monadplus, MonadRandom, mono-traversable
  -, monoidal-containers, mtl, newtype-generics, OpenGL, OpenGLRaw
  -, optparse-applicative, parsers, pretty, pretty-show, primitive
  -, profunctors, proteaaudio, QuickCheck, random, ref-tf, reflex
  -, reflex-glfw, semigroupoids, semigroups, singletons, sop-core
  -, spool, stdenv, stm, tasty, tasty-discover, tasty-expected-failure
  -, tasty-hedgehog, tasty-hspec, tasty-hunit, tasty-quickcheck
  -, tasty-smallcheck, template-haskell, text, text-format, text-lens
  -, text-zipper, these, time, transformers, trifecta, type-map
  -, TypeCompose, unordered-containers, vect, vector, wl-pprint-extras
  -, wl-pprint-text
  +, binary, bytestring, cairo, clock, containers, data-default
  +, dependent-sum, directory, dlist, exceptions, extra, fclabels
  +, filepath, free, freer-simple, generics-sop, ghc-prim, gi-cairo
  +, gi-gobject, gi-pango, gi-pangocairo, GLFW-b, Glob, hashable
  +, haskell-gi-base, hedgehog, hspec, hxt, JuicyPixels
  +, lambdacube-compiler, lambdacube-gl, lambdacube-ir, lens, lens-sop
  +, linear, lub, metamorphic, MissingH, monadplus, MonadRandom
  +, mono-traversable, monoidal-containers, mtl, newtype-generics
  +, OpenGL, OpenGLRaw, optparse-applicative, parsers, pretty
  +, pretty-show, primitive, profunctors, proteaaudio, QuickCheck
  +, random, ref-tf, reflex, reflex-glfw, semigroupoids, semigroups
  +, singletons, sop-core, spool, stdenv, stm, tasty, tasty-discover
  +, tasty-expected-failure, tasty-hedgehog, tasty-hspec, tasty-hunit
  +, tasty-quickcheck, tasty-smallcheck, template-haskell, text
  +, text-format, text-lens, text-zipper, these, time, transformers
  +, trifecta, type-map, TypeCompose, unordered-containers, vect
  +, vector, wl-pprint-extras, wl-pprint-text
   }:
   mkDerivation {
     pname = "holotype";
  
positive.code:     tasty-smallcheck
    ];
    testToolDepends = [ tasty-discover ];
    doHaddock = false;
    doCheck = false;
    description = "Graph-backed visual mind assistant";
    license = stdenv.lib.licenses.agpl3;
  }
  
negative.code:   isExecutable = true;
    libraryHaskellDepends = [
      aeson aeson-pretty base base-unicode-symbols binary bytestring
      cairo clock containers data-default dependent-sum directory dlist
      exceptions extra fclabels filepath free freer-simple generics-sop
      ghc-prim gi-cairo gi-gobject gi-pango gi-pangocairo GLFW-b hashable
      haskell-gi-base hedgehog hspec hxt JuicyPixels lambdacube-compiler
      lambdacube-gl lambdacube-ir lens lens-sop linear lub metamorphic
      MissingH monadplus MonadRandom mono-traversable monoidal-containers
  