Remove use of the deprecated string type

default.nix

@@ -244,7 +244,7 @@ in
     };
 
     hierarchySeparator = mkOption {
-      type = types.string;
+      type = types.str;
       default = ".";
       description = ''
         The hierarchy separator for mailboxes used by dovecot for the namespace 'inbox'.
@@ -489,14 +489,14 @@ in
       enable = mkEnableOption "monitoring via monit";
 
       alertAddress = mkOption {
-        type = types.string;
+        type = types.str;
         description = ''
           The email address to send alerts to.
         '';
       };
 
       config = mkOption {
-        type = types.string;
+        type = types.str;
         default = ''
           set daemon 120 with start delay 60
           set mailserver
@@ -548,7 +548,7 @@ in
       enable = mkEnableOption "backup via borgbackup";
 
       repoLocation = mkOption {
-        type = types.string;
+        type = types.str;
         default = "/var/borgbackup";
         description = ''
           The location where borg saves the backups.
@@ -558,19 +558,19 @@ in
       };
 
       startAt = mkOption {
-        type = types.string;
+        type = types.str;
         default = "hourly";
         description = "When or how often the backup should run. Must be in the format described in systemd.time 7.";
       };
 
       user = mkOption {
-        type = types.string;
+        type = types.str;
         default = "virtualMail";
         description = "The user borg and its launch script is run as.";
       };
 
       group = mkOption {
-        type = types.string;
+        type = types.str;
         default = "virtualMail";
         description = "The group borg and its launch script is run as.";
       };
@@ -624,7 +624,7 @@ in
       };
 
       name = mkOption {
-        type = types.string;
+        type = types.str;
         default = "{hostname}-{user}-{now}";
         description = ''
           The name of the individual backups as used by borg.
@@ -639,19 +639,19 @@ in
       };
 
       extraArgumentsForInit = mkOption {
-        type = types.listOf types.string;
+        type = types.listOf types.str;
         default = ["--critical"];
         description = "Additional arguments to add to the borg init command line.";
       };
 
       extraArgumentsForCreate = mkOption {
-        type = types.listOf types.string;
+        type = types.listOf types.str;
         default = [ ];
         description = "Additional arguments to add to the borg create command line e.g. '--stats'.";
       };
 
       cmdPreexec = mkOption {
-        type = types.nullOr types.string;
+        type = types.nullOr types.str;
         default = null;
         description = ''
           The command to be executed before each backup operation.
@@ -662,7 +662,7 @@ in
       };
 
       cmdPostexec = mkOption {
-        type = types.nullOr types.string;
+        type = types.nullOr types.str;
         default = null;
         description = ''
           The command to be executed after each backup operation.
@@ -706,7 +706,7 @@ in
       };
 
       cmdPreexec = mkOption {
-        type = types.nullOr types.string;
+        type = types.nullOr types.str;
         default = null;
         description = ''
           The command to be executed before each backup operation. This is wrapped in a shell script to be called by rsnapshot.
@@ -714,7 +714,7 @@ in
       };
 
       cmdPostexec = mkOption {
-        type = types.nullOr types.string;
+        type = types.nullOr types.str;
         default = null;
         description = "The command to be executed after each backup operation. This is wrapped in a shell script to be called by rsnapshot.";
       };
@@ -738,7 +738,7 @@ in
       };
 
       cronIntervals = mkOption {
-        type = types.attrsOf types.string;
+        type = types.attrsOf types.str;
         default = {
                    # minute, hour, day-in-month, month, weekday (0 = sunday)
           hourly = " 0  *  *  *  *"; # Every full hour

tests/clamav/bytecode.cvd

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a6800da4e3740b611e4f8a8e835be4a867abf8009af502e5bbf038d3ad162fa8
-size 187426

tests/clamav/daily.cvd

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:da96006e191412806bac1a2cef5d48ed0ec1b46efa150cf0aa6c27e734f4c4f8
-size 49476126

tests/clamav/freshclam.conf

@@ -1 +0,0 @@
-DatabaseMirror database.clamav.net

tests/clamav/hashes.json

@@ -1,5 +0,0 @@
-{
-  "bytecode.cvd": "a6800da4e3740b611e4f8a8e835be4a867abf8009af502e5bbf038d3ad162fa8",
-  "daily.cvd": "da96006e191412806bac1a2cef5d48ed0ec1b46efa150cf0aa6c27e734f4c4f8",
-  "main.cvd": "081884225087021e718599e8458ff6c9ee3cdebed8775dd8e445fc7b589d88a6"
-}

tests/clamav/main.cvd

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:081884225087021e718599e8458ff6c9ee3cdebed8775dd8e445fc7b589d88a6
-size 117892267

tests/clamav/update-clamav-database.sh

@@ -1,15 +0,0 @@
-#!/bin/sh
-
-set -e
-
-cd "$(dirname "${0}")"
-
-rm ./*.cvd hashes.json || :
-
-freshclam --datadir=. --config-file=freshclam.conf
-(for i in ./*.cvd;
- do echo '{}' |
-     jq --arg path "$(basename "${i}")" \
-        --arg sha256sum "$(sha256sum "${i}" | awk '{ print $1; }')" \
-        '.[$path] = $sha256sum'; done) |
-  jq -s add > hashes.json

tests/extern.nix

@@ -1,414 +0,0 @@
-#  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2018  Robin Raymond
-#
-#  This program is free software: you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation, either version 3 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program. If not, see <http://www.gnu.org/licenses/>
-
-import <nixpkgs/nixos/tests/make-test.nix> {
-
-  nodes = {
-    server = { config, pkgs, ... }:
-        {
-            imports = [
-                ../default.nix
-                ./lib/config.nix
-            ];
-
-            services.rsyslogd = {
-              enable = true;
-              defaultConfig = ''
-              *.*   /dev/console
-              '';
-            };
-
-
-            mailserver = {
-              enable = true;
-              debug = true;
-              fqdn = "mail.example.com";
-              domains = [ "example.com" "example2.com" ];
-              rewriteMessageId = true;
-              dkimKeyBits = 1535;
-
-              loginAccounts = {
-                  "user1@example.com" = {
-                      hashedPassword = "$6$/z4n8AQl6K$kiOkBTWlZfBd7PvF5GsJ8PmPgdZsFGN1jPGZufxxr60PoR0oUsrvzm2oQiflyz5ir9fFJ.d/zKm/NgLXNUsNX/";
-                      aliases = [ "postmaster@example.com" ];
-                      catchAll = [ "example.com" ];
-                  };
-                  "user2@example.com" = {
-                      hashedPassword = "$6$u61JrAtuI0a$nGEEfTP5.eefxoScUGVG/Tl0alqla2aGax4oTd85v3j3xSmhv/02gNfSemv/aaMinlv9j/ZABosVKBrRvN5Qv0";
-                      aliases = [ "chuck@example.com" ];
-                  };
-                  "user@example2.com" = {
-                      hashedPassword = "$6$u61JrAtuI0a$nGEEfTP5.eefxoScUGVG/Tl0alqla2aGax4oTd85v3j3xSmhv/02gNfSemv/aaMinlv9j/ZABosVKBrRvN5Qv0";
-                  };
-                  "lowquota@example.com" = {
-                      hashedPassword = "$6$u61JrAtuI0a$nGEEfTP5.eefxoScUGVG/Tl0alqla2aGax4oTd85v3j3xSmhv/02gNfSemv/aaMinlv9j/ZABosVKBrRvN5Qv0";
-                      quota = "1B";
-                  };
-              };
-
-              extraVirtualAliases = {
-                "single-alias@example.com" = "user1@example.com";
-                "multi-alias@example.com" = [ "user1@example.com" "user2@example.com" ];
-              };
-
-              enableImap = true;
-              enableImapSsl = true;
-            };
-        };
-      client = { nodes, config, pkgs, ... }: let
-        serverIP = nodes.server.config.networking.primaryIPAddress;
-        clientIP = nodes.client.config.networking.primaryIPAddress;
-        grep-ip = pkgs.writeScriptBin "grep-ip" ''
-          #!${pkgs.stdenv.shell}
-          echo grep '${clientIP}' "$@" >&2
-          exec grep '${clientIP}' "$@"
-        '';
-        check-mail-id = pkgs.writeScriptBin "check-mail-id" ''
-          #!${pkgs.stdenv.shell}
-          echo grep '^Message-ID:.*@mail.example.com>$' "$@" >&2
-          exec grep '^Message-ID:.*@mail.example.com>$' "$@"
-        '';
-        test-imap-spam = pkgs.writeScriptBin "imap-mark-spam" ''
-          #!${pkgs.python3.interpreter}
-          import imaplib
-
-          with imaplib.IMAP4_SSL('${serverIP}') as imap:
-            imap.login('user1@example.com', 'user1')
-            imap.select()
-            status, [response] = imap.search(None, 'ALL')
-            msg_ids = response.decode("utf-8").split(' ')
-            print(msg_ids)
-            assert status == 'OK'
-            assert len(msg_ids) == 1
-
-            imap.copy(','.join(msg_ids), 'Junk')
-            for num in msg_ids:
-              imap.store(num, '+FLAGS', '\\Deleted')
-            imap.expunge()
-
-            imap.select('Junk')
-            status, [response] = imap.search(None, 'ALL')
-            msg_ids = response.decode("utf-8").split(' ')
-            print(msg_ids)
-            assert status == 'OK'
-            assert len(msg_ids) == 1
-
-            imap.close()
-        '';
-        test-imap-ham = pkgs.writeScriptBin "imap-mark-ham" ''
-          #!${pkgs.python3.interpreter}
-          import imaplib
-
-          with imaplib.IMAP4_SSL('${serverIP}') as imap:
-            imap.login('user1@example.com', 'user1')
-            imap.select('Junk')
-            status, [response] = imap.search(None, 'ALL')
-            msg_ids = response.decode("utf-8").split(' ')
-            print(msg_ids)
-            assert status == 'OK'
-            assert len(msg_ids) == 1
-
-            imap.copy(','.join(msg_ids), 'INBOX')
-            for num in msg_ids:
-              imap.store(num, '+FLAGS', '\\Deleted')
-            imap.expunge()
-
-            imap.select('INBOX')
-            status, [response] = imap.search(None, 'ALL')
-            msg_ids = response.decode("utf-8").split(' ')
-            print(msg_ids)
-            assert status == 'OK'
-            assert len(msg_ids) == 1
-
-            imap.close()
-        '';
-      in {
-        imports = [
-            ./lib/config.nix
-        ];
-        environment.systemPackages = with pkgs; [
-          fetchmail msmtp procmail findutils grep-ip check-mail-id test-imap-spam test-imap-ham
-        ];
-        environment.etc = {
-          "root/.fetchmailrc" = {
-            text = ''
-                poll ${serverIP} with proto IMAP
-                user 'user1@example.com' there with password 'user1' is 'root' here
-                mda procmail
-            '';
-            mode = "0700";
-          };
-          "root/.fetchmailRcLowQuota" = {
-            text = ''
-                poll ${serverIP} with proto IMAP
-                user 'lowquota@example.com' there with password 'user2' is 'root' here
-                mda procmail
-            '';
-            mode = "0700";
-          };
-          "root/.procmailrc" = {
-            text = "DEFAULT=$HOME/mail";
-          };
-          "root/.msmtprc" = {
-            text = ''
-              account        test
-              host           ${serverIP}
-              port           587
-              from           user2@example.com
-              user           user2@example.com
-              password       user2
-
-              account        test2
-              host           ${serverIP}
-              port           587
-              from           user@example2.com
-              user           user@example2.com
-              password       user2
-
-              account        test3
-              host           ${serverIP}
-              port           587
-              from           chuck@example.com
-              user           user2@example.com
-              password       user2
-
-              account        test4
-              host           ${serverIP}
-              port           587
-              from           postmaster@example.com
-              user           user1@example.com
-              password       user1
-
-              account        test5
-              host           ${serverIP}
-              port           587
-              from           single-alias@example.com
-              user           user1@example.com
-              password       user1
-            '';
-          };
-          "root/email1".text = ''
-            Message-ID: <12345qwerty@host.local.network>
-            From: User2 <user2@example.com>
-            To: User1 <user1@example.com>
-            Cc:
-            Bcc:
-            Subject: This is a test Email from user2 to user1
-            Reply-To:
-
-            Hello User1,
-
-            how are you doing today?
-          '';
-          "root/email2".text = ''
-            Message-ID: <232323abc@host.local.network>
-            From: User <user@example2.com>
-            To: User1 <user1@example.com>
-            Cc:
-            Bcc:
-            Subject: This is a test Email from user@example2.com to user1
-            Reply-To:
-
-            Hello User1,
-
-            how are you doing today?
-
-            XOXO User1
-          '';
-          "root/email3".text = ''
-            Message-ID: <asdfghjkl42@host.local.network>
-            From: Postmaster <postmaster@example.com>
-            To: Chuck <chuck@example.com>
-            Cc:
-            Bcc:
-            Subject: This is a test Email from postmaster\@example.com to chuck
-            Reply-To:
-
-            Hello Chuck,
-
-            I think I may have misconfigured the mail server
-            XOXO Postmaster
-          '';
-          "root/email4".text = ''
-            Message-ID: <sdfsdf@host.local.network>
-            From: Single Alias <single-alias@example.com>
-            To: User1 <user1@example.com>
-            Cc:
-            Bcc:
-            Subject: This is a test Email from single-alias\@example.com to user1
-            Reply-To:
-
-            Hello User1,
-
-            how are you doing today?
-
-            XOXO User1 aka Single Alias
-          '';
-          "root/email5".text = ''
-            Message-ID: <789asdf@host.local.network>
-            From: User2 <user2@example.com>
-            To: Multi Alias <multi-alias@example.com>
-            Cc:
-            Bcc:
-            Subject: This is a test Email from user2\@example.com to multi-alias
-            Reply-To:
-
-            Hello Multi Alias,
-
-            how are we doing today?
-
-            XOXO User1
-          '';
-        };
-      };
-    };
-
-  testScript = { nodes, ... }:
-      ''
-      startAll;
-
-      $server->waitForUnit("multi-user.target");
-      $client->waitForUnit("multi-user.target");
-
-      # TODO put this blocking into the systemd units?
-      $server->waitUntilSucceeds("timeout 1 ${nodes.server.pkgs.netcat}/bin/nc -U /run/rspamd/rspamd-milter.sock < /dev/null; [ \$? -eq 124 ]");
-
-      $client->execute("cp -p /etc/root/.* ~/");
-      $client->succeed("mkdir -p ~/mail");
-      $client->succeed("ls -la ~/ >&2");
-      $client->succeed("cat ~/.fetchmailrc >&2");
-      $client->succeed("cat ~/.procmailrc >&2");
-      $client->succeed("cat ~/.msmtprc >&2");
-
-      subtest "imap retrieving mail", sub {
-          # fetchmail returns EXIT_CODE 1 when no new mail
-          $client->succeed("fetchmail -v || [ \$? -eq 1 ] >&2");
-      };
-
-      subtest "submission port send mail", sub {
-          # send email from user2 to user1
-          $client->succeed("msmtp -a test --tls=on --tls-certcheck=off --auth=on user1\@example.com < /etc/root/email1 >&2");
-          # give the mail server some time to process the mail
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-      };
-
-      subtest "imap retrieving mail 2", sub {
-          $client->execute("rm ~/mail/*");
-          # fetchmail returns EXIT_CODE 0 when it retrieves mail
-          $client->succeed("fetchmail -v >&2");
-      };
-
-      subtest "remove sensitive information on submission port", sub {
-        $client->succeed("cat ~/mail/* >&2");
-        ## make sure our IP is _not_ in the email header
-        $client->fail("grep-ip ~/mail/*");
-        $client->succeed("check-mail-id ~/mail/*");
-      };
-
-      subtest "have correct fqdn as sender", sub {
-        $client->succeed("grep 'Received: from mail.example.com' ~/mail/*");
-      };
-
-      subtest "dkim has user-specified size", sub {
-        $server->succeed("openssl rsa -in /var/dkim/example.com.mail.key -text -noout | grep 'Private-Key: (1535 bit)'");
-      };
-
-      subtest "dkim singing, multiple domains", sub {
-          $client->execute("rm ~/mail/*");
-          # send email from user2 to user1
-          $client->succeed("msmtp -a test2 --tls=on --tls-certcheck=off --auth=on user1\@example.com < /etc/root/email2 >&2");
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-          # fetchmail returns EXIT_CODE 0 when it retrieves mail
-          $client->succeed("fetchmail -v");
-          $client->succeed("cat ~/mail/* >&2");
-          # make sure it is dkim signed
-          $client->succeed("grep DKIM ~/mail/*");
-      };
-
-      subtest "aliases", sub {
-          $client->execute("rm ~/mail/*");
-          # send email from chuck to postmaster
-          $client->succeed("msmtp -a test3 --tls=on --tls-certcheck=off --auth=on postmaster\@example.com < /etc/root/email2 >&2");
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-          # fetchmail returns EXIT_CODE 0 when it retrieves mail
-          $client->succeed("fetchmail -v");
-      };
-
-      subtest "catchAlls", sub {
-          $client->execute("rm ~/mail/*");
-          # send email from chuck to non exsitent account
-          $client->succeed("msmtp -a test3 --tls=on --tls-certcheck=off --auth=on lol\@example.com < /etc/root/email2 >&2");
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-          # fetchmail returns EXIT_CODE 0 when it retrieves mail
-          $client->succeed("fetchmail -v");
-
-          $client->execute("rm ~/mail/*");
-          # send email from user1 to chuck
-          $client->succeed("msmtp -a test4 --tls=on --tls-certcheck=off --auth=on chuck\@example.com < /etc/root/email2 >&2");
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-          # fetchmail returns EXIT_CODE 1 when no new mail
-          # if this succeeds, it means that user1 recieved the mail that was intended for chuck.
-          $client->fail("fetchmail -v");
-      };
-
-      subtest "extraVirtualAliases", sub {
-          $client->execute("rm ~/mail/*");
-          # send email from single-alias to user1
-          $client->succeed("msmtp -a test5 --tls=on --tls-certcheck=off --auth=on user1\@example.com < /etc/root/email4 >&2");
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-          # fetchmail returns EXIT_CODE 0 when it retrieves mail
-          $client->succeed("fetchmail -v");
-
-          $client->execute("rm ~/mail/*");
-          # send email from user1 to multi-alias (user{1,2}@example.com)
-          $client->succeed("msmtp -a test --tls=on --tls-certcheck=off --auth=on multi-alias\@example.com < /etc/root/email5 >&2");
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-          # fetchmail returns EXIT_CODE 0 when it retrieves mail
-          $client->succeed("fetchmail -v");
-      };
-
-      subtest "quota", sub {
-          $client->execute("rm ~/mail/*");
-          $client->execute("mv ~/.fetchmailRcLowQuota ~/.fetchmailrc");
-
-          $client->succeed("msmtp -a test3 --tls=on --tls-certcheck=off --auth=on lowquota\@example.com < /etc/root/email2 >&2");
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-          # fetchmail returns EXIT_CODE 0 when it retrieves mail
-          $client->fail("fetchmail -v");
-
-      };
-
-      subtest "imap sieve junk trainer", sub {
-          # send email from user2 to user1
-          $client->succeed("msmtp -a test --tls=on --tls-certcheck=off --auth=on user1\@example.com < /etc/root/email1 >&2");
-          # give the mail server some time to process the mail
-          $server->waitUntilFails('[ "$(postqueue -p)" != "Mail queue is empty" ]');
-
-          $client->succeed("imap-mark-spam >&2");
-          $server->waitUntilSucceeds("journalctl -u dovecot2 | grep -i sa-learn-spam.sh >&2");
-          $client->succeed("imap-mark-ham >&2");
-          $server->waitUntilSucceeds("journalctl -u dovecot2 | grep -i sa-learn-ham.sh >&2");
-      };
-
-      subtest "no warnings or errors", sub {
-          $server->fail("journalctl -u postfix | grep -i error >&2");
-          $server->fail("journalctl -u postfix | grep -i warning >&2");
-          $server->fail("journalctl -u dovecot2 | grep -i error >&2");
-          $server->fail("journalctl -u dovecot2 | grep -i warning >&2");
-      };
-
-    '';
-}

tests/intern.nix

@@ -1,53 +0,0 @@
-#  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2018  Robin Raymond
-#
-#  This program is free software: you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation, either version 3 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program. If not, see <http://www.gnu.org/licenses/>
-
-import <nixpkgs/nixos/tests/make-test.nix> {
-
-  machine =
-    { config, pkgs, ... }:
-    {
-        imports = [
-            ./../default.nix
-            ./lib/config.nix
-        ];
-
-        mailserver = {
-          enable = true;
-          fqdn = "mail.example.com";
-          domains = [ "example.com" ];
-
-          loginAccounts = {
-              "user1@example.com" = {
-                  hashedPassword = "$6$/z4n8AQl6K$kiOkBTWlZfBd7PvF5GsJ8PmPgdZsFGN1jPGZufxxr60PoR0oUsrvzm2oQiflyz5ir9fFJ.d/zKm/NgLXNUsNX/";
-              };
-          };
-
-          vmailGroupName = "vmail";
-          vmailUID = 5000;
-        };
-    };
-
-  testScript =
-    ''
-      $machine->start;
-      $machine->waitForUnit("multi-user.target");
-
-      subtest "vmail gid is set correctly", sub {
-            $machine->succeed("getent group vmail | grep 5000");
-      };
-
-    '';
-}

tests/lib/config.nix

@@ -1,11 +0,0 @@
-{
-    security.dhparams.defaultBitSize = 16; # really low for quicker tests
-
-    # For slow non-kvm tests.
-    # nixos/modules/testing/test-instrumentation.nix also sets this. I don't know if there's a better way than etc to override theirs.
-    environment.etc."systemd/system.conf.d/bigdefaulttimeout.conf".text = ''
-      [Manager]
-      # Allow extremely slow start (default for test-VMs is 5 minutes)
-      DefaultTimeoutStartSec=15min
-    '';
-}

tests/lib/pkgs.nokvm.nix

@@ -1,31 +0,0 @@
-let
-    pkgs = (import <nixpkgs> { system = builtins.currentSystem; config = {}; });
-    patchedMachinePM = pkgs.writeTextFile {
-        name = "Machine.pm.patched-to-wait-longer-for-vm";
-        text = builtins.replaceStrings ["alarm 600;"] ["alarm 1200;"] (builtins.readFile (<nixpkgs>+"/nixos/lib/test-driver/Machine.pm"));
-    };
-in
-(pkgs // {
-    qemu_test = with pkgs; stdenv.mkDerivation {
-        name = "qemu_test_no_kvm";
-        buildInputs = [ coreutils qemu_test ];
-        inherit qemu_test;
-        inherit coreutils;
-        builder = builtins.toFile "builder.sh" ''
-            PATH=$coreutils/bin:$PATH
-            mkdir -p $out/bin
-            cp $qemu_test/bin/* $out/bin/
-            ln -sf $out/bin/qemu-system-${stdenv.hostPlatform.qemuArch} $out/bin/qemu-kvm
-        '';
-    };
-    stdenv = pkgs.stdenv // {
-        mkDerivation = args: (pkgs.stdenv.mkDerivation (args // (
-            pkgs.lib.optionalAttrs (args.name == "nixos-test-driver") {
-                installPhase = args.installPhase + ''
-                    rm $libDir/Machine.pm
-                    cp ${patchedMachinePM} $libDir/Machine.pm
-                '';
-            }
-        )));
-    };
-})

tests/minimal.nix

@@ -1,31 +0,0 @@
-#  nixos-mailserver: a simple mail server
-#  Copyright (C) 2016-2018  Robin Raymond
-#
-#  This program is free software: you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation, either version 3 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program. If not, see <http://www.gnu.org/licenses/>
-
-import <nixpkgs/nixos/tests/make-test.nix> {
-
-  machine =
-    { config, pkgs, ... }:
-    {
-        imports = [
-            ./../default.nix
-        ];
-    };
-
-  testScript =
-    ''
-      $machine->waitForUnit("multi-user.target");
-    '';
-}

update.sh

@@ -1,3 +0,0 @@
-#!/usr/bin/env bash
-
-sed -i -e "s/v[0-9]\+\.[0-9]\+\.[0-9]\+/$1/g" README.md