diff --git a/nixos/modules/services/audio/mpd.nix b/nixos/modules/services/audio/mpd.nix
index 85e0a7d2ac4..5ec2e2c2623 100644
--- a/nixos/modules/services/audio/mpd.nix
+++ b/nixos/modules/services/audio/mpd.nix
@@ -49,7 +49,7 @@ in {
       };
 
       extraConfig = mkOption {
-        type = types.str;
+        type = types.lines;
         default = "";
         description = ''
           Extra directives added to to the end of MPD's configuration file,
diff --git a/nixos/modules/services/backup/bacula.nix b/nixos/modules/services/backup/bacula.nix
index ef8e5e55ede..340b0cf0723 100644
--- a/nixos/modules/services/backup/bacula.nix
+++ b/nixos/modules/services/backup/bacula.nix
@@ -340,6 +340,7 @@ in {
 
       extraConfig = mkOption {
         default = "";
+        type = types.lines;
         description = ''
           Extra configuration for Bacula Director Daemon.
         '';
diff --git a/nixos/modules/services/hardware/tlp.nix b/nixos/modules/services/hardware/tlp.nix
index 281d02a8c65..f36a9e7b459 100644
--- a/nixos/modules/services/hardware/tlp.nix
+++ b/nixos/modules/services/hardware/tlp.nix
@@ -40,7 +40,7 @@ in
       };
 
       extraConfig = mkOption {
-        type = types.str;
+        type = types.lines;
         default = "";
         description = "Additional configuration variables for TLP";
       };
diff --git a/nixos/modules/services/mail/dovecot.nix b/nixos/modules/services/mail/dovecot.nix
index e79d5dadd82..4c9df935deb 100644
--- a/nixos/modules/services/mail/dovecot.nix
+++ b/nixos/modules/services/mail/dovecot.nix
@@ -111,7 +111,7 @@ in
     };
 
     extraConfig = mkOption {
-      type = types.str;
+      type = types.lines;
       default = "";
       example = "mail_debug = yes";
       description = "Additional entries to put verbatim into Dovecot's config file.";
diff --git a/nixos/modules/services/misc/bepasty.nix b/nixos/modules/services/misc/bepasty.nix
index 5bda73ab64f..52719222db6 100644
--- a/nixos/modules/services/misc/bepasty.nix
+++ b/nixos/modules/services/misc/bepasty.nix
@@ -53,7 +53,7 @@ in
           };
 
           extraConfig = mkOption {
-            type = types.str;
+            type = types.lines;
             description = ''
               Extra configuration for bepasty server to be appended on the
               configuration.
diff --git a/nixos/modules/services/misc/octoprint.nix b/nixos/modules/services/misc/octoprint.nix
index c2b3f63be7d..516ca80a337 100644
--- a/nixos/modules/services/misc/octoprint.nix
+++ b/nixos/modules/services/misc/octoprint.nix
@@ -73,7 +73,7 @@ in
       };
 
       extraConfig = mkOption {
-        type = types.attrs;
+        type = types.lines;
         default = {};
         description = "Extra options which are added to OctoPrint's YAML configuration file.";
       };
diff --git a/nixos/modules/services/misc/redmine.nix b/nixos/modules/services/misc/redmine.nix
index 7c9483911f2..e3f1ec67cbb 100644
--- a/nixos/modules/services/misc/redmine.nix
+++ b/nixos/modules/services/misc/redmine.nix
@@ -71,7 +71,7 @@ in {
       };
 
       extraConfig = mkOption {
-        type = types.str;
+        type = types.lines;
         default = "";
         description = "Extra configuration in configuration.yml";
       };
diff --git a/nixos/modules/services/monitoring/bosun.nix b/nixos/modules/services/monitoring/bosun.nix
index 9a1e790d3ab..496838a131b 100644
--- a/nixos/modules/services/monitoring/bosun.nix
+++ b/nixos/modules/services/monitoring/bosun.nix
@@ -107,7 +107,7 @@ in {
       };
 
       extraConfig = mkOption {
-        type = types.string;
+        type = types.lines;
         default = "";
         description = ''
           Extra configuration options for Bosun. You should describe your
diff --git a/nixos/modules/services/monitoring/graphite.nix b/nixos/modules/services/monitoring/graphite.nix
index 1de3320dc42..b8be9296bc9 100644
--- a/nixos/modules/services/monitoring/graphite.nix
+++ b/nixos/modules/services/monitoring/graphite.nix
@@ -167,7 +167,7 @@ in {
             CACHE_TYPE: 'filesystem'
             CACHE_DIR: '/tmp/graphite-api-cache'
         '';
-        type = types.str;
+        type = types.lines;
       };
     };
 
diff --git a/nixos/modules/services/monitoring/munin.nix b/nixos/modules/services/monitoring/munin.nix
index aaa041ad4cd..57df16b58d9 100644
--- a/nixos/modules/services/monitoring/munin.nix
+++ b/nixos/modules/services/monitoring/munin.nix
@@ -100,6 +100,7 @@ in
 
       extraConfig = mkOption {
         default = "";
+        type = types.lines;
         description = ''
           <filename>munin-node.conf</filename> extra configuration. See
           <link xlink:href='http://munin-monitoring.org/wiki/munin-node.conf' />
diff --git a/nixos/modules/services/monitoring/zabbix-agent.nix b/nixos/modules/services/monitoring/zabbix-agent.nix
index a943075be0c..88a63b4bf16 100644
--- a/nixos/modules/services/monitoring/zabbix-agent.nix
+++ b/nixos/modules/services/monitoring/zabbix-agent.nix
@@ -53,6 +53,7 @@ in
 
       extraConfig = mkOption {
         default = "";
+        type = types.lines;
         description = ''
           Configuration that is injected verbatim into the configuration file.
         '';
diff --git a/nixos/modules/services/network-filesystems/xtreemfs.nix b/nixos/modules/services/network-filesystems/xtreemfs.nix
index b051214e1d0..0c6714563d8 100644
--- a/nixos/modules/services/network-filesystems/xtreemfs.nix
+++ b/nixos/modules/services/network-filesystems/xtreemfs.nix
@@ -153,6 +153,7 @@ in
           '';
         };
         extraConfig = mkOption {
+          type = types.lines;
           default = "";
           example = ''
             # specify whether SSL is required
@@ -173,6 +174,7 @@ in
         replication = {
           enable = mkEnableOption "XtreemFS DIR replication plugin";
           extraConfig = mkOption {
+            type = types.lines;
             example = ''
               # participants of the replication including this replica
               babudb.repl.participant.0 = 192.168.0.10
@@ -269,6 +271,7 @@ in
           '';
         };
         extraConfig = mkOption {
+          type = types.lines;
           example = ''
             osd_check_interval = 300
             no_atime = true
@@ -307,6 +310,7 @@ in
         replication = {
           enable = mkEnableOption "XtreemFS MRC replication plugin";
           extraConfig = mkOption {
+            type = types.lines;
             example = ''
               # participants of the replication including this replica
               babudb.repl.participant.0 = 192.168.0.10
@@ -385,6 +389,7 @@ in
           '';
         };
         extraConfig = mkOption {
+          type = types.lines;
           example = ''
             local_clock_renewal = 0
             remote_time_sync = 30000
diff --git a/nixos/modules/services/networking/bind.nix b/nixos/modules/services/networking/bind.nix
index 41d7128ec31..72110e62576 100644
--- a/nixos/modules/services/networking/bind.nix
+++ b/nixos/modules/services/networking/bind.nix
@@ -113,6 +113,7 @@ in
       };
 
       extraConfig = mkOption {
+        type = types.lines;
         default = "";
         description = "
           Extra lines to be added verbatim to the generated named configuration file.
diff --git a/nixos/modules/services/networking/chrony.nix b/nixos/modules/services/networking/chrony.nix
index a38142b4a08..d40865ebbd5 100644
--- a/nixos/modules/services/networking/chrony.nix
+++ b/nixos/modules/services/networking/chrony.nix
@@ -51,6 +51,7 @@ in
       };
 
       extraConfig = mkOption {
+        type = types.lines;
         default = "";
         description = ''
           Extra configuration directives that should be added to
diff --git a/nixos/modules/services/networking/cntlm.nix b/nixos/modules/services/networking/cntlm.nix
index 76c0fd7d0ea..890ff508407 100644
--- a/nixos/modules/services/networking/cntlm.nix
+++ b/nixos/modules/services/networking/cntlm.nix
@@ -61,6 +61,7 @@ in
       };
 
      extraConfig = mkOption {
+        type = types.lines;
         default = "";
         description = "Verbatim contents of <filename>cntlm.conf</filename>.";
      };
diff --git a/nixos/modules/services/networking/ddclient.nix b/nixos/modules/services/networking/ddclient.nix
index e74d68cad90..5050ecbd749 100644
--- a/nixos/modules/services/networking/ddclient.nix
+++ b/nixos/modules/services/networking/ddclient.nix
@@ -89,7 +89,7 @@ in
 
       extraConfig = mkOption {
         default = "";
-        type = str;
+        type = lines;
         description = ''
           Extra configuration. Contents will be added verbatim to the configuration file.
         '';
diff --git a/nixos/modules/services/networking/dhcpd.nix b/nixos/modules/services/networking/dhcpd.nix
index 36b4c5d5c1e..d2cd00e74a1 100644
--- a/nixos/modules/services/networking/dhcpd.nix
+++ b/nixos/modules/services/networking/dhcpd.nix
@@ -47,6 +47,7 @@ in
       };
 
       extraConfig = mkOption {
+        type = types.lines;
         default = "";
         example = ''
           option subnet-mask 255.255.255.0;
diff --git a/nixos/modules/services/networking/hostapd.nix b/nixos/modules/services/networking/hostapd.nix
index 287964aab07..51f95af4802 100644
--- a/nixos/modules/services/networking/hostapd.nix
+++ b/nixos/modules/services/networking/hostapd.nix
@@ -140,7 +140,7 @@ in
           ieee80211n=1
           ht_capab=[HT40-][SHORT-GI-40][DSSS_CCK-40]
           '';
-        type = types.string;
+        type = types.lines;
         description = "Extra configuration options to put in hostapd.conf.";
       };
     };
diff --git a/nixos/modules/services/networking/kippo.nix b/nixos/modules/services/networking/kippo.nix
index 1e7f7437b8a..834de4fdc09 100644
--- a/nixos/modules/services/networking/kippo.nix
+++ b/nixos/modules/services/networking/kippo.nix
@@ -46,7 +46,7 @@ rec {
       };
       extraConfig = mkOption {
         default = "";
-        type = types.string;
+        type = types.lines;
         description = ''Extra verbatim configuration added to the end of kippo.cfg.'';
       };
     };
diff --git a/nixos/modules/services/networking/murmur.nix b/nixos/modules/services/networking/murmur.nix
index 134544cda68..81f968ae9fe 100644
--- a/nixos/modules/services/networking/murmur.nix
+++ b/nixos/modules/services/networking/murmur.nix
@@ -230,7 +230,7 @@ in
       };
 
       extraConfig = mkOption {
-        type = types.str;
+        type = types.lines;
         default = "";
         description = "Extra configuration to put into mumur.ini.";
       };
diff --git a/nixos/modules/services/networking/prayer.nix b/nixos/modules/services/networking/prayer.nix
index cb8fe6bf4fe..9d63f549b23 100644
--- a/nixos/modules/services/networking/prayer.nix
+++ b/nixos/modules/services/networking/prayer.nix
@@ -56,6 +56,7 @@ in
       };
 
       extraConfig = mkOption {
+        type = types.lines;
         default = "" ;
         description = ''
           Extra configuration. Contents will be added verbatim to the configuration file.
diff --git a/nixos/modules/services/networking/prosody.nix b/nixos/modules/services/networking/prosody.nix
index 247c4f1efb0..5682b506344 100644
--- a/nixos/modules/services/networking/prosody.nix
+++ b/nixos/modules/services/networking/prosody.nix
@@ -195,6 +195,7 @@ in
       };
 
       extraConfig = mkOption {
+        type = types.lines;
         default = '''';
         description = "Additional prosody configuration";
       };
diff --git a/nixos/modules/services/networking/smokeping.nix b/nixos/modules/services/networking/smokeping.nix
index cc373ae892a..0c1f8d8cdb9 100644
--- a/nixos/modules/services/networking/smokeping.nix
+++ b/nixos/modules/services/networking/smokeping.nix
@@ -244,7 +244,7 @@ in
         description = "Target configuration";
       };
       extraConfig = mkOption {
-        type = types.string;
+        type = types.lines;
         default = "";
         description = "Any additional customization not already included.";
       };
diff --git a/nixos/modules/services/networking/unbound.nix b/nixos/modules/services/networking/unbound.nix
index 6375ebee320..f3a04d97c98 100644
--- a/nixos/modules/services/networking/unbound.nix
+++ b/nixos/modules/services/networking/unbound.nix
@@ -79,7 +79,7 @@ in
 
       extraConfig = mkOption {
         default = "";
-        type = types.str;
+        type = types.lines;
         description = ''
           Extra unbound config. See
           <citerefentry><refentrytitle>unbound.conf</refentrytitle><manvolnum>8
diff --git a/nixos/modules/services/networking/xinetd.nix b/nixos/modules/services/networking/xinetd.nix
index 270122ee659..00224502780 100644
--- a/nixos/modules/services/networking/xinetd.nix
+++ b/nixos/modules/services/networking/xinetd.nix
@@ -124,7 +124,7 @@ in
           };
 
           extraConfig = mkOption {
-            type = types.string;
+            type = types.lines;
             default = "";
             description = "Extra configuration-lines added to the section of the service.";
           };
diff --git a/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix b/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix
index 4f9e9f52f9e..1ed489bcb09 100644
--- a/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix
+++ b/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix
@@ -288,6 +288,7 @@ in
     };
 
     extraConfig = mkOption {
+      type = types.lines;
       default = "";
       example =
         ''
diff --git a/nixos/modules/services/web-servers/apache-httpd/moodle.nix b/nixos/modules/services/web-servers/apache-httpd/moodle.nix
index aa00e89967d..d525348d5c7 100644
--- a/nixos/modules/services/web-servers/apache-httpd/moodle.nix
+++ b/nixos/modules/services/web-servers/apache-httpd/moodle.nix
@@ -164,6 +164,7 @@ in
 
 
     extraConfig = mkOption {
+      type = types.lines;
       default = "";
       example =
         ''
diff --git a/nixos/modules/services/web-servers/apache-httpd/wordpress.nix b/nixos/modules/services/web-servers/apache-httpd/wordpress.nix
index 2315c4729ae..32dd4439675 100644
--- a/nixos/modules/services/web-servers/apache-httpd/wordpress.nix
+++ b/nixos/modules/services/web-servers/apache-httpd/wordpress.nix
@@ -212,6 +212,7 @@ in
           example = "[ \"en_GB\" \"de_DE\" ];";
     };
     extraConfig = mkOption {
+      type = types.lines;
       default = "";
       example =
         ''
diff --git a/nixos/modules/services/x11/display-managers/sddm.nix b/nixos/modules/services/x11/display-managers/sddm.nix
index c79893e77aa..36daf55a36a 100644
--- a/nixos/modules/services/x11/display-managers/sddm.nix
+++ b/nixos/modules/services/x11/display-managers/sddm.nix
@@ -86,7 +86,7 @@ in
       };
 
       extraConfig = mkOption {
-        type = types.str;
+        type = types.lines;
         default = "";
         example = ''
           [Autologin]