my problem building servant snap

default.nix

{ mkDerivation, aeson, attoparsec, base, base64-bytestring
, bytestring, case-insensitive, containers, digestive-functors
, directory, either, errors, exceptions, filepath, heist, hspec
, hspec-core, hspec-snap, http-api-data, http-client, http-media
, http-types, HUnit, io-streams, lens, map-syntax, mmorph, mtl
, network, network-uri, parsec, process, QuickCheck, servant
, servant-client, snap, snap-core, snap-cors, snap-server, stdenv
, string-conversions, temporary, text, time, transformers, word8
}:
mkDerivation {
  pname = "servant-snap";
  version = "0.8.2";
  src = /Users/evan/Documents/reflex/try/mod/servant-snap;
  isLibrary = true;
  isExecutable = true;
  libraryHaskellDepends = [
    aeson attoparsec base base64-bytestring bytestring case-insensitive
    containers either filepath http-api-data http-media http-types
    io-streams mmorph mtl network-uri servant snap snap-core
    snap-server string-conversions text transformers word8
  ];
  executableHaskellDepends = [
    aeson base bytestring either errors heist http-client lens
    map-syntax servant servant-client snap snap-core snap-cors
    snap-server text transformers
  ];
  testHaskellDepends = [
    aeson base base64-bytestring bytestring case-insensitive containers
    digestive-functors directory either exceptions hspec hspec-core
    hspec-snap http-types HUnit io-streams lens mtl network parsec
    process QuickCheck servant snap snap-core snap-cors snap-server
    string-conversions temporary text time transformers
  ];
  jailbreak = true;
  doCheck = false;
  homepage = "http://haskell-servant.github.io/";
  description = "A family of combinators for defining webservices APIs and serving them";
  license = stdenv.lib.licenses.bsd3;
}

myProblem.sh

nix-build --attr servant-snap release.nix 
these derivations will be built:
  /nix/store/0aw0k2pzibffd8l71hr29in5wnxmcnwa-remove-references-to.drv
  /nix/store/x07l4w1za802g2qdms3l5q5w21zfw9r7-doctest-0.13.0.drv
  /nix/store/684fwlvsrbn548pnnckdgf2z1ls1pdr0-distributive-0.5.3.drv
  /nix/store/c5g8iha0flw5nri4d6nb5rpj9chqhyj8-comonad-5.0.3.drv
  /nix/store/hxrnp8mi58x0ppkc5f9w57m7w5cz594r-bifunctors-5.5.2.drv
  /nix/store/gdpci62y8nmclvh9qna8gdhv2phxisbf-profunctors-5.2.2.drv
  /nix/store/za7s6bnrryjxhp9z91ynhkv1smb2dijq-semigroupoids-5.2.1.drv
  /nix/store/pk4qgb5861873fkkh6dm1zidws8hvcwi-free-4.12.4.drv
  /nix/store/wkdn1fkyyhbndjgf3hjr3s85kf1q5g7z-adjunctions-4.3.drv
  /nix/store/phlc5lahjk1w7j6059r4sy3h83sxc4cd-kan-extensions-5.0.2.drv
  /nix/store/0kfw3dbiid0jl7sn0vfn5sy6s1mnrldf-lens-4.15.4.drv
  /nix/store/2i3g3fgyswjfb6vaayjl4nyvcfhc7djs-blaze-markup-0.8.2.0.drv
  /nix/store/54y08sdb4qg4v7cqbn9nk65kbki487zl-blaze-html-0.9.0.1.drv
  /nix/store/9ahmv89xlfc7x6a1q85mq4dxbm3kbvv6-vault-0.3.1.0.drv
  /nix/store/xj7lz4jxjq5zdpbxcy4nwyi3pq3hg8na-http-types-0.12.1.drv
  /nix/store/d20n70391jrscvrswim9bvamq0xqj4y3-wai-3.2.1.1.drv
  /nix/store/57bsd203383lmd5b3ci1z3xf224sbzv4-aeson-pretty-0.8.5.drv
  /nix/store/hnr3fqfaigqnycyv9sdcx08852zda3x6-psqueues-0.2.5.0.drv
  /nix/store/n3nwgka99apdhd3w60a48c761flxc3ai-word8-0.1.3.drv
  /nix/store/71ai2ws4qqm0aln6yfyyy1f2y47alfq2-http2-1.6.3.drv
  /nix/store/cgn4m63cwbw9zz8yjjhiippdyd4lxzch-iproute-1.7.2.drv
  /nix/store/wgdpv4zys2gah6bm07n23r7rbv72m12d-http-date-0.0.6.1.drv
  /nix/store/ldnl84bv71aragqzw3knxd49d18ldxzr-warp-3.2.13.drv
  /nix/store/h3h812yv31hbdqb680nlvh0i041pbxqb-unix-time-0.3.8.drv
  /nix/store/iv8n5qmw1l75v4axk0dfcl5v8z7ciqzv-fast-logger-2.4.11.drv
  /nix/store/s8anvvki3pwq8cwg8bxkx511b9h5vkiv-wai-logger-2.3.1.drv
  /nix/store/mhsgm0cbbkhzhlwqz5fkbyw9qsf4dpym-wai-extra-3.0.22.0.drv
  /nix/store/0zg0qpvzl3qydi7md2j7hjczsl09w3ax-wai-app-static-3.1.6.1.drv
  /nix/store/4637254smf8v8wfcl3646wg0abgrzgvy-http-media-0.7.1.2.drv
  /nix/store/5yj7zm4wsi684bbg46xxdlrhfg1mfmjq-http-client-0.5.10.drv
  /nix/store/3vxa076xrdam8qcrrjvca1wwn54ggd6d-uri-bytestring-0.3.1.1.drv
  /nix/store/z5f002qxw58wv79hcbn4253sjw4hp28m-attoparsec-iso8601-1.0.0.0.drv
  /nix/store/an41sp9lkjva1lzljsmfcrfxghd5z5ca-http-api-data-0.3.7.2.drv
  /nix/store/5d47a4an56ljgcgfmpbh3w6achmam974-string-conversions-0.4.0.1.drv
  /nix/store/7gqxfsnbv8dxgmqhiyr2mnag23dxvf73-natural-transformation-0.4.drv
  /nix/store/h006ymq1l6sfwhhk44fs4r0m9zlx0d66-aeson-compat-0.3.7.1.drv
  /nix/store/cnllr373f6fsvzxi86r38npiqd4mxmi5-servant-0.13.drv
  /nix/store/9188rfaswbxjrprf3gqs48nhifvka6q7-servant-client-core-0.13.drv
  /nix/store/g5saga9i4jq3lqgnnxk91k5ayl379fnw-http-client-tls-0.3.5.3.drv
  /nix/store/36910q087ybw7ab267kyfr80nhp74ydn-should-not-typecheck-2.1.0.drv
  /nix/store/vh33x1ywz9csa213xci2024np7ds56zm-hspec-wai-0.9.0.drv
  /nix/store/xyxbflk4bh8n3llydj2bf3wdrgcyayy0-system-filepath-0.4.14.drv
  /nix/store/myrkil29w902lfc0ilqsngzzmmabhb7m-servant-server-0.13.drv
  /nix/store/34sq96wlvbldccsff24dhfgvzdq6wd1b-servant-client-0.13.drv
  /nix/store/4db5lyr0p38j99d7cjx70774mk2bgy3s-cryptohash-0.11.9.drv
  /nix/store/3qrm2wg38cq7m4hy4pvkw6ajgl4ycajr-pwstore-fast-2.4.4.drv
  /nix/store/48hs6q8icra33vm267zvfasmwz7y69xr-crypto-api-0.13.3.drv
  /nix/store/imxp971v1bb7ysqh7nyh9lj973r7n7ih-securemem-0.1.10.drv
  /nix/store/7yzfpl9fhjjsmr1y60pn5g6dbmyzmrk2-crypto-cipher-types-0.0.9.drv
  /nix/store/vl10xmmzx77d4wg8qv3dwi55bz299kf6-crypto-cipher-tests-0.0.11.drv
  /nix/store/4af7y4kv8pj6hj5laqhcbr3sswiq4mrw-cipher-aes-0.2.11.drv
  /nix/store/8alf1w8lfa098giwi3k6jiy1qzm13d9j-xmlhtml-0.2.5.2.drv
  /nix/store/hbmafrim1xb1kb203hvhay1vsk4jsck8-map-syntax-0.2.0.2.drv
  /nix/store/5gyq00cqljmz6cgg1a7r2c7v1a2al288-heist-1.0.1.2.drv
  /nix/store/75iqsln9sjd4rspjqciwklkwg9pn8swy-test-framework-smallcheck-0.2.drv
  /nix/store/lm8xb7j9aqrpbpw94n3z7994ahqd2qa3-readable-0.3.1.drv
  /nix/store/y80gkglgwrw5nr3lvjcrpsximx6i0qvz-zlib-bindings-0.1.1.5.drv
  /nix/store/manjzn145hjzz0yxkbkx3whhra944cwm-io-streams-1.5.0.1.drv
  /nix/store/b3a655714032dgnqbk1xqgb6ji259gv9-snap-core-1.0.3.1.drv
  /nix/store/fh9wvr6hs56fx8fvsfq8ib03kxsclgdi-io-streams-haproxy-1.0.0.2.drv
  /nix/store/mqqh17fivkh324pzmh3apb3lw0fh0n44-http-common-0.8.2.0.drv
  /nix/store/msw32f1d1zqpgxzdjvkk9fis6nzvxc0b-openssl-streams-1.2.1.3.drv
  /nix/store/q3dkw8nw0mhdxbl4v50li8bc9q6dbswk-http-streams-0.8.5.5.drv
  /nix/store/7fwph1yzrm8g6pdxn9l2y9mrjb3mfl5m-snap-server-1.0.3.3.drv
  /nix/store/lhdaz8nm2lw1dwkpq32ccgyhxgmkm5xa-crypto-random-0.0.9.drv
  /nix/store/cqcc1d376j803p8n0av16jlgyyi09isa-cprng-aes-0.6.1.drv
  /nix/store/fg0gydrzbsmiprk0gswq0la2z0dpd2d6-skein-1.0.9.4.drv
  /nix/store/d23w1qzi8cx6ld81l200pcdvwa0fmyw7-clientsession-0.9.1.2.drv
  /nix/store/gp35fzizhkxz42dh0psdzd29208na9bv-configurator-0.3.0.0.drv
  /nix/store/4hxw15wrfgwbsdicic2g5acc2p4flgs5-snap-1.1.0.0.drv
  /nix/store/58mz9mzcvvi5zh1qwyf8b2mln9mxbh75-snap-cors-1.3.0.drv
  /nix/store/ajlm1z2l7xa4ps76kzcs895a014x6zkl-either-4.5.drv
  /nix/store/xmj6z8n0qdicqr35yjmynszy9b40fhk1-errors-2.2.4.drv
  /nix/store/8plhvii2xkmq61s62p8n136dc9c9wmbn-servant-snap-0.8.2.drv
these paths will be fetched (0.07 MiB download, 0.65 MiB unpacked):
  /nix/store/pfhwv11ygfl9acv7y05x40kyrdgfa06k-connection-0.2.8
building '/nix/store/0aw0k2pzibffd8l71hr29in5wnxmcnwa-remove-references-to.drv'...
dyld: Library not loaded: /usr/lib/system/libsystem_network.dylib
  Referenced from: /nix/store/8ykfqv6jx9jvfhnc4cdygdzg0piy8253-Libsystem-osx-10.11.6/lib/libSystem.B.dylib
  Reason: image not found
builder for '/nix/store/0aw0k2pzibffd8l71hr29in5wnxmcnwa-remove-references-to.drv' failed due to signal 6 (Abort trap: 6)
cannot build derivation '/nix/store/8plhvii2xkmq61s62p8n136dc9c9wmbn-servant-snap-0.8.2.drv': 1 dependencies couldn't be built
error: build of '/nix/store/8plhvii2xkmq61s62p8n136dc9c9wmbn-servant-snap-0.8.2.drv' failed
bash-3.2$ nix-env --version
nix-env (Nix) 2.2.1
bash-3.2$ 

release.nix

{ compiler ? "default" }:
let
  pkgs = import ./pkgs.nix;
  haskellPackages = if compiler == "default"
                       then pkgs.haskellPackages
                       else pkgs.haskell.packages.${compiler};

in {
  servant-snap = haskellPackages.callPackage ./default.nix {};
}