gistfile1.txt

$ morph build morph/grid/testing/grid.nix 
Selected 2/2 hosts (name filter:-0, limits:-0):
          0: xx.xx.xx.xx (secrets: 1, health checks: 0)
          1: yy.yy.yy.yy (secrets: 2, health checks: 0)

building '/nix/store/x1j448chi48wi04qp6k4s1ac00wwyjir-source.drv'...

trying https://github.com/PrivateStorageio/ZKAPAuthorizer/archive/6cd0c32cc53a9734e2cb7c19a9ad28d479612197.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   173  100   173    0     0    856      0 --:--:-- --:--:-- --:--:--   852
100  145k    0  145k    0     0   229k      0 --:--:-- --:--:-- --:--:--  229k
unpacking source archive /build/6cd0c32cc53a9734e2cb7c19a9ad28d479612197.tar.gz
hash mismatch in fixed-output derivation '/nix/store/7m0r4r9xl53gsmpidka8ybqizrvs8jy7-source':
  wanted: sha256:0i1r75471yjj4bfi5814ihrcyjk1zdz8rzm06bngij3n70svqhsm
  got:    sha256:1cw4c0z0iy9iznp95zwsbrl0ss1ax5pqvd2hlrbyk90bdd91y81z
error: build of '/nix/store/x1j448chi48wi04qp6k4s1ac00wwyjir-source.drv' failed
(use '--show-trace' to show detailed location information)
Error while running `nix build ...`: See above.

zkapauthz-repo.nix

let
  pkgs = import <nixpkgs> {};
in
  pkgs.fetchFromGitHub {
    owner = "PrivateStorageio";
    repo = "ZKAPAuthorizer";
    rev = "6cd0c32cc53a9734e2cb7c19a9ad28d479612197";
    sha256 = "0i1r75471yjj4bfi5814ihrcyjk1zdz8rzm06bngij3n70svqhsm";
  }