nixcloud.email: evaluation error when using nginx simultaniously

[erictapen]

When using the example config, I'm getting

error: cannot coerce null to a string, at /home/justin/git/nixcloud-webservices/modules/services/reverse-proxy/default.nix:224:7
(use ‘--show-trace’ to show detailed location information)

This is a test case, reproducing the issue:

import <nixpkgs/nixos/tests/make-test.nix> ({ pkgs, ...}:

{
  name = "nixcloud-email";

  nodes = {

    server =
      { config, pkgs, lib, ... }:

      let
        ipAddress = "8.19.10.3";
        ipv6Address = "201:48:11:403::1:1";
      in {
        imports = [
          <nixcloud-webservices/modules>
        ];
        nixcloud.email= {
          enable = true;
          domains = [ "lastlog.de" "dune2.de" ];
          ipAddress = ipAddress;
          ip6Address = ipv6Address;
          hostname = "mail.lastlog.de";
          users = [
            # see https://wiki.dovecot.org/Authentication/PasswordSchemes
            { name = "js"; domain = "lastlog.de"; password = "{SHA256-CRYPT}$<<<removed by qknight>>>"; }
            { name = "foo1"; domain = "dune2.de"; password = "{PLAIN}asdfasdfasdfasdf"; }
          ];
        };
        services.nginx = {
          enable = true;
          virtualHosts = {
            "example.com" = {
              locations."/" = {
                root = "/webroot/";
              };
              forceSSL = true;
              enableACME = true;
            };
          };
        };

      };
  };

  testScript = ''
    startAll;

  '';
})

Put it in test-email.nix and call it with

nix-build test-email.nix -I nixcloud-webservices=/path/to/your/nixcloud-webservices/ -I nixpkgs=https://d3g5gsiof5omrk.cloudfront.net/nixos/17.09/nixos-17.09.3154.b47b4f3dd3c/nixexprs.tar.xz

where nixpkgs is current nixos-17.09 and nixcloud-webservices current master.

[qknight]

thanks for that bug report, needs to be fixed!

note on services.nginx usage

if you want to use services.nginx then you need to disable ACME in nixcloud.email, see:

https://nixdoc.io/nixcloud-webservices/index.html#enableacme+nixcloud

use nixcloud.webservices instead of services.nginx, see:

https://github.com/nixcloud/nixcloud-webservices/blob/master/documentation/nixcloud.webservices.md#static-file-serving-no-cgi

documentation

i'll update the documentation about how to use services.nginx with nixcloud.reverse-proxy in parallel soon.

[qknight]

@erictapen updated https://github.com/nixcloud/nixcloud-webservices/blob/master/documentation/nixcloud.reverse-proxy.md with an image to illustrate the implications

[qknight]

@erictapen fixed in 7a510de and the cause for the problem is fixed in nixpkgs by NixOS/nixpkgs@edeacd0#diff-3ac514cd8063d3114597ce7aa42b27cf