with import (builtins.fetchTarball {
  # FIXME: upgrade to nixpkgs 19 when stable and stick to stable
  # versions
  name = "nixos-unstable-2018-12-08";
  url = https://github.com/nixos/nixpkgs/archive/61c3169a0e17d789c566d5b241bfe309ce4a6275.tar.gz;
  sha256 = "0qbycg7wkb71v20rchlkafrjfpbk2fnlvvbh3ai9pyfisci5wxvq";
}) {};
let
adminer = pkgs.stdenv.mkDerivation rec {
  name = "adminer-4.7.0";
  src = pkgs.fetchurl {
    url = "https://www.adminer.org/static/download/4.7.0/${name}.php";
    sha256 = "1qq2g7rbfh2vrqfm3g0bz0qs057b049n0mhabnsbd1sgnpvnc5z7";
  };
  phases = "installPhase";
  installPhase = ''
    mkdir -p $out
    cp $src $out/index.php
  '';
};

in
  {
    inherit adminer;
  }