update

shell.nix

{ nixpkgs ? import <nixpkgs> {}, compiler ? "ghc882" } :

let
  
  bootstrap = import <nixpkgs> { };

  nixpkgs = builtins.fromJSON (builtins.readFile ./nixpkgs.json);

  src = bootstrap.fetchFromGitHub {
    owner = "NixOS";
    repo  = "nixpkgs";
    inherit (nixpkgs) rev sha256;
  };

  pkgs = import src { };
  myHaskellPackages = pkgs.haskell.packages."${compiler}".override {
      overrides = self: super: rec {
        time-compat =  self.callPackage ./time-compat.nix { };
        blog = self.callPackage ./blog.nix {};
      };
  }; 
in {
  blog = myHaskellPackages.blog;
}
 

time-compat.nix

{ mkDerivation, base, base-compat, base-orphans, deepseq, fetchgit
, HUnit, QuickCheck, stdenv, tagged, tasty, tasty-hunit
, tasty-quickcheck, time
}:
mkDerivation {
  pname = "time-compat";
  version = "1.9.2.2";
  src = fetchgit {
    url = "https://github.com/andersk/time-compat.git";
    sha256 = "11y1fkndcw8bkpfx3jwpbv6i9p0v7snavy2vi76sckkk0jp0rpq5";
    rev = "d8d82905d009c44e7e8148442d76820a5d51b1df";
    fetchSubmodules = true;
  };
  libraryHaskellDepends = [ base base-orphans deepseq time ];
  testHaskellDepends = [
    base base-compat deepseq HUnit QuickCheck tagged tasty tasty-hunit
    tasty-quickcheck time
  ];
  homepage = "https://github.com/phadej/time-compat";
  description = "Compatibility package for time";
  license = stdenv.lib.licenses.bsd3;
}