myNixProblim.nix

###The end of my build log

Run jailbreak-cabal to lift version restrictions on build inputs.
jailbreak-cabal: dieVerbatim: user error (jailbreak-cabal: Error Parsing: file "servant-client-core.cabal" doesn't
exist. Cannot continue.
)
builder for '/nix/store/zg6zidfnyw4b391sfs4jpyxfv0y5s5hl-servant-client-core-0.16.drv' failed with exit code 1
cannot build derivation '/nix/store/pqfbzjs3s34qdfx7x05i4d7ckllqlb3d-servant-client-0.15.drv': 1 dependencies couldn't be built
building '/nix/store/qcpw4waxxk6i98d30h8hhb4gfsi36hzf-unix-time-0.4.5.drv'...
cannot build derivation '/nix/store/jvj1yvk03760s2ijypnaml2swck4qhcs-servant-snap-0.8.2.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/sjrd5r8fk8qaq85b20q4nqnymb833hjm-backend-0.1.0.0.drv': 1 dependencies couldn't be built
error: build of '/nix/store/sjrd5r8fk8qaq85b20q4nqnymb833hjm-backend-0.1.0.0.drv' failed

### My shell command

nix-build  -v --attr backend release1.nix  


### release1.nix

let
  config = {
    packageOverrides = pkgs: rec {
      haskellPackages = pkgs.haskellPackages.override {
        overrides = haskellPackagesNew: haskellPackagesOld: rec {
          common =
            haskellPackagesNew.callPackage ../common/common.nix { };
          backend =
            haskellPackagesNew.callPackage ./backend.nix { };
          groundhog =
            pkgs.haskell.lib.dontCheck
            (haskellPackagesNew.callPackage ./groundhog.nix { });
          groundhog-th=
            pkgs.haskell.lib.doJailbreak          
             (haskellPackagesNew.callPackage ./groundhog-th.nix { });
          groundhog-postgresql=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./groundhog-postgresql.nix { });
          xmlhtml=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./xmlhtml.nix { });
          heist=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./heist.nix { });
          snap-core=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./snap-core.nix { });
          snap=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./snap.nix { });
          snap-server=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./snap-server.nix { });
          ip-streams-haproxy=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./ip-streams-haproxy.nix { });
          servant=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./servant.nix { });
          servant-client-core=
            pkgs.haskell.lib.dontCheck          
             (haskellPackagesNew.callPackage ./servant-client-core.nix { });
          
          map-syntax=
            pkgs.haskell.lib.doJailbreak        
             (haskellPackagesNew.callPackage ./map-syntax.nix { });             
 
          servant-snap=
            pkgs.haskell.lib.doJailbreak        
             (haskellPackagesNew.callPackage ./servant-snap.nix { });
             
          hspec=
            pkgs.haskell.lib.doJailbreak        
             (haskellPackagesNew.callPackage ../../hspec/default.nix { });
             
 
        };
      };
    };
  };

  pkgs = import <nixpkgs> { inherit config; };

in
  {
    backend = pkgs.haskellPackages.backend;
  }

### servant-client-core.nix

{ mkDerivation, aeson, base, base-compat, base64-bytestring
, bytestring, containers, deepseq, exceptions, free, hspec
, hspec-discover, http-media, http-types, network-uri, QuickCheck
, safe, servant, stdenv, template-haskell, text, transformers
}:
mkDerivation {
  pname = "servant-client-core";
  version = "0.16";
  src = ./.;
  libraryHaskellDepends = [
    aeson base base-compat base64-bytestring bytestring containers
    deepseq exceptions free http-media http-types network-uri safe
    servant template-haskell text transformers
  ];
  testHaskellDepends = [ base base-compat deepseq hspec QuickCheck ];
  testToolDepends = [ hspec-discover ];
  jailbreak = true;
  doCheck = false;
  homepage = "http://docs.servant.dev/";
  description = "Core functionality and class for client function generation for servant APIs";
  license = stdenv.lib.licenses.bsd3;
}