Disable tests for a Haskell package in Nix.

haskell-disable-tests

for ghc802 specifically:

  nixpkgs.config.packageOverrides = pkgs:
  {
    haskell = pkgs.haskell // {
      packages = pkgs.haskell.packages // {
        ghc802 = pkgs.haskell.packages.ghc802.override {
          overrides = self: super:
            {
            ghc-syb-utils = pkgs.haskell.lib.dontCheck super.ghc-syb-utils;
          };
        };
      };
    };
  };
  
for deault haskell package set:  
  
  nixpkgs.config.packageOverrides = pkgs:
  {
    haskellPackages = pkgs.haskellPackages.override {
      overrides = self: super:
      {
        ghc-syb-utils = pkgs.haskell.lib.dontCheck super.ghc-syb-utils;
      };
    };
  };