anchor.diff:      };
   
       aspellEnv = aspellWithDicts(ps: [ ps.en ps.es ]);
  -
  -    # ----------------
  -    # Haskell programs
  -    # ----------------
  -
  -    phocid = with haskellPackages; haskell.lib.doJailbreak (callPackage (fetchgit {
  -      url = "https://github.com/mjhoy/phocid";
  -      rev = "b10747693c3d67115f0ca18cdaa5f048449ea15e";
  -      sha256 = "1yr0fhm85mbc6nvc6hqgz6s5ib29c7y45ksacami3b24zrq67709";
  -    }) { });
   
       # ----------------------
       # Emacs & emacs packages
  
positive.code:       ];
      };
  
      # haskell environment
      myHaskellEnv = haskellPackages.ghcWithHoogle (p: with p; [
        cabal-install
        hlint
        QuickCheck
        hspec
        hasktags
  
        # useful libraries...
        # MonadCatchIO-transformers # Dependency problem
        # composite-base
        # composite-aeson
        servant
        servant-server
        Crypto
        # HaXml
        HandsomeSoup
        MonadRandom
        Unixutils
        Cabal_3_0_0_0
        aeson
        aeson-better-errors
        array
        base64-bytestring
        blaze-html
        bower-json
        boxes
        brittany
        bytestring
        cheapskate
        containers
        data-ordlist
        edit-distance
        extra
        filepath
        hakyll
        hscurses
        hsexif
        hspec
        hspec-core
        hxt
        io-streams
        language-javascript
        lens
        monad-logger
        mtl
        optparse-applicative
        pandoc
        parsec
        pattern-arrows
        pipes
        pipes-http
        postgresql-simple
        process
        dhall
        protolude
        readable
        regex-applicative
        regex-base
        regex-compat
        regex-posix
        regex-tdfa
        resource-pool
        safe
        scotty
        shakespeare
        singletons
        # issue building postgres-libpq
        # snaplet-postgresql-simple
        sourcemap
        split
        text
        time
        transformers
        turtle
        unordered-containers
        uuid
        vector
        wai-websockets
        websockets
        wreq
      ]);
  
      myPython3Env = python3.withPackages (p: with p; [
        virtualenv
        pip
  
negative.code:     # $ nix-build "<nixpkgs>" -A example-pkg-hello
      example-pkg-hello = callPackage ~/.dotfiles/nix/pkgs/example-pkg-hello {};
  
      nodejsEnv = with pkgs; buildEnv {
        name = "nodeEnv";
        paths = [
  