treewide: add defaultText for options with simple interpolation defaults

adds defaultText for all options that use `cfg.*` values in their
defaults, but only for interpolations with no extra processing (other
than toString where necessary)

nixos/modules/services/cluster/hadoop/default.nix

@@ -1,6 +1,7 @@
-{ config, lib, pkgs, ...}:
+{ config, lib, options, pkgs, ...}:
 let
   cfg = config.services.hadoop;
+  opt = options.services.hadoop;
 in
 with lib;
 {
@@ -44,6 +45,14 @@ with lib;
         "mapreduce.map.env" = "HADOOP_MAPRED_HOME=${cfg.package}/lib/${cfg.package.untarDir}";
         "mapreduce.reduce.env" = "HADOOP_MAPRED_HOME=${cfg.package}/lib/${cfg.package.untarDir}";
       };
+      defaultText = literalExpression ''
+        {
+          "mapreduce.framework.name" = "yarn";
+          "yarn.app.mapreduce.am.env" = "HADOOP_MAPRED_HOME=''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}";
+          "mapreduce.map.env" = "HADOOP_MAPRED_HOME=''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}";
+          "mapreduce.reduce.env" = "HADOOP_MAPRED_HOME=''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}";
+        }
+      '';
       type = types.attrsOf types.anything;
       example = literalExpression ''
         options.services.hadoop.mapredSite.default // {
@@ -98,6 +107,9 @@ with lib;
 
     log4jProperties = mkOption {
       default = "${cfg.package}/lib/${cfg.package.untarDir}/etc/hadoop/log4j.properties";
+      defaultText = literalExpression ''
+        "''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}/etc/hadoop/log4j.properties"
+      '';
       type = types.path;
       example = literalExpression ''
         "''${pkgs.hadoop}/lib/''${pkgs.hadoop.untarDir}/etc/hadoop/log4j.properties";

nixos/modules/services/continuous-integration/buildbot/master.nix

@@ -1,11 +1,12 @@
 # NixOS module for Buildbot continous integration server.
 
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.buildbot-master;
+  opt = options.services.buildbot-master;
 
   python = cfg.package.pythonModule;
 
@@ -152,6 +153,7 @@ in {
 
       buildbotDir = mkOption {
         default = "${cfg.home}/master";
+        defaultText = literalExpression ''"''${config.${opt.home}}/master"'';
         type = types.path;
         description = "Specifies the Buildbot directory.";
       };

nixos/modules/services/continuous-integration/buildbot/worker.nix

@@ -1,11 +1,12 @@
 # NixOS module for Buildbot Worker.
 
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.buildbot-worker;
+  opt = options.services.buildbot-worker;
 
   python = cfg.package.pythonModule;
 
@@ -77,6 +78,7 @@ in {
 
       buildbotDir = mkOption {
         default = "${cfg.home}/worker";
+        defaultText = literalExpression ''"''${config.${opt.home}}/worker"'';
         type = types.path;
         description = "Specifies the Buildbot directory.";
       };

nixos/modules/services/continuous-integration/gocd-agent/default.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.gocd-agent;
+  opt = options.services.gocd-agent;
 in {
   options = {
     services.gocd-agent = {
@@ -98,6 +99,15 @@ in {
           "-Dcruise.console.publish.interval=10"
           "-Djava.security.egd=file:/dev/./urandom"
         ];
+        defaultText = literalExpression ''
+          [
+            "-Xms''${config.${opt.initialJavaHeapSize}}"
+            "-Xmx''${config.${opt.maxJavaHeapMemory}}"
+            "-Djava.io.tmpdir=/tmp"
+            "-Dcruise.console.publish.interval=10"
+            "-Djava.security.egd=file:/dev/./urandom"
+          ]
+        '';
         description = ''
           Specifies startup command line arguments to pass to Go.CD agent
           java process.

nixos/modules/services/continuous-integration/gocd-server/default.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.gocd-server;
+  opt = options.services.gocd-server;
 in {
   options = {
     services.gocd-server = {
@@ -106,6 +107,20 @@ in {
           "-Dcruise.server.port=${toString cfg.port}"
           "-Dcruise.server.ssl.port=${toString cfg.sslPort}"
         ];
+        defaultText = literalExpression ''
+          [
+            "-Xms''${config.${opt.initialJavaHeapSize}}"
+            "-Xmx''${config.${opt.maxJavaHeapMemory}}"
+            "-Dcruise.listen.host=''${config.${opt.listenAddress}}"
+            "-Duser.language=en"
+            "-Djruby.rack.request.size.threshold.bytes=30000000"
+            "-Duser.country=US"
+            "-Dcruise.config.dir=''${config.${opt.workDir}}/conf"
+            "-Dcruise.config.file=''${config.${opt.workDir}}/conf/cruise-config.xml"
+            "-Dcruise.server.port=''${toString config.${opt.port}}"
+            "-Dcruise.server.ssl.port=''${toString config.${opt.sslPort}}"
+          ]
+        '';
 
         description = ''
           Specifies startup command line arguments to pass to Go.CD server

nixos/modules/services/databases/neo4j.nix

@@ -4,6 +4,7 @@ with lib;
 
 let
   cfg = config.services.neo4j;
+  opt = options.services.neo4j;
   certDirOpt = options.services.neo4j.directories.certificates;
   isDefaultPathOption = opt: isOption opt && opt.type == types.path && opt.highestPrio >= 1500;
 
@@ -256,6 +257,7 @@ in {
       certificates = mkOption {
         type = types.path;
         default = "${cfg.directories.home}/certificates";
+        defaultText = literalExpression ''"''${config.${opt.directories.home}}/certificates"'';
         description = ''
           Directory for storing certificates to be used by Neo4j for
           TLS connections.
@@ -280,6 +282,7 @@ in {
       data = mkOption {
         type = types.path;
         default = "${cfg.directories.home}/data";
+        defaultText = literalExpression ''"''${config.${opt.directories.home}}/data"'';
         description = ''
           Path of the data directory. You must not configure more than one
           Neo4j installation to use the same data directory.
@@ -305,6 +308,7 @@ in {
       imports = mkOption {
         type = types.path;
         default = "${cfg.directories.home}/import";
+        defaultText = literalExpression ''"''${config.${opt.directories.home}}/import"'';
         description = ''
           The root directory for file URLs used with the Cypher
           <literal>LOAD CSV</literal> clause. Only meaningful when
@@ -321,6 +325,7 @@ in {
       plugins = mkOption {
         type = types.path;
         default = "${cfg.directories.home}/plugins";
+        defaultText = literalExpression ''"''${config.${opt.directories.home}}/plugins"'';
         description = ''
           Path of the database plugin directory. Compiled Java JAR files that
           contain database procedures will be loaded if they are placed in

nixos/modules/services/hardware/tcsd.nix

@@ -1,11 +1,12 @@
 # tcsd daemon.
 
-{ config, pkgs, lib, ... }:
+{ config, options, pkgs, lib, ... }:
 
 with lib;
 let
 
   cfg = config.services.tcsd;
+  opt = options.services.tcsd;
 
   tcsdConf = pkgs.writeText "tcsd.conf" ''
     port = 30003
@@ -83,6 +84,7 @@ in
 
       platformCred = mkOption {
         default = "${cfg.stateDir}/platform.cert";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/platform.cert"'';
         type = types.path;
         description = ''
           Path to the platform credential for your TPM. Your TPM
@@ -96,6 +98,7 @@ in
 
       conformanceCred = mkOption {
         default = "${cfg.stateDir}/conformance.cert";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/conformance.cert"'';
         type = types.path;
         description = ''
           Path to the conformance credential for your TPM.
@@ -104,6 +107,7 @@ in
 
       endorsementCred = mkOption {
         default = "${cfg.stateDir}/endorsement.cert";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/endorsement.cert"'';
         type = types.path;
         description = ''
           Path to the endorsement credential for your TPM.

nixos/modules/services/misc/etcd.nix

@@ -50,6 +50,7 @@ in {
     initialCluster = mkOption {
       description = "Etcd initial cluster configuration for bootstrapping.";
       default = ["${cfg.name}=http://127.0.0.1:2380"];
+      defaultText = literalExpression ''["''${config.${opt.name}}=http://127.0.0.1:2380"]'';
       type = types.listOf types.str;
     };
 

nixos/modules/services/misc/exhibitor.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.exhibitor;
+  opt = options.services.exhibitor;
   exhibitorConfig = ''
     zookeeper-install-directory=${cfg.baseDir}/zookeeper
     zookeeper-data-directory=${cfg.zkDataDir}
@@ -165,6 +166,7 @@ in
       zkDataDir = mkOption {
         type = types.str;
         default = "${cfg.baseDir}/zkData";
+        defaultText = literalExpression ''"''${config.${opt.baseDir}}/zkData"'';
         description = ''
           The Zookeeper data directory
         '';
@@ -172,6 +174,7 @@ in
       zkLogDir = mkOption {
         type = types.path;
         default = "${cfg.baseDir}/zkLogs";
+        defaultText = literalExpression ''"''${config.${opt.baseDir}}/zkLogs"'';
         description = ''
           The Zookeeper logs directory
         '';

nixos/modules/services/misc/gitea.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.gitea;
+  opt = options.services.gitea;
   gitea = cfg.package;
   pg = config.services.postgresql;
   useMysql = cfg.database.type == "mysql";
@@ -51,6 +52,7 @@ in
       log = {
         rootPath = mkOption {
           default = "${cfg.stateDir}/log";
+          defaultText = literalExpression ''"''${config.${opt.stateDir}}/log"'';
           type = types.str;
           description = "Root path for log files.";
         };
@@ -130,6 +132,7 @@ in
         path = mkOption {
           type = types.str;
           default = "${cfg.stateDir}/data/gitea.db";
+          defaultText = literalExpression ''"''${config.${opt.stateDir}}/data/gitea.db"'';
           description = "Path to the sqlite3 database file.";
         };
 
@@ -166,6 +169,7 @@ in
         backupDir = mkOption {
           type = types.str;
           default = "${cfg.stateDir}/dump";
+          defaultText = literalExpression ''"''${config.${opt.stateDir}}/dump"'';
           description = "Path to the dump files.";
         };
       };
@@ -199,6 +203,7 @@ in
         contentDir = mkOption {
           type = types.str;
           default = "${cfg.stateDir}/data/lfs";
+          defaultText = literalExpression ''"''${config.${opt.stateDir}}/data/lfs"'';
           description = "Where to store LFS files.";
         };
       };
@@ -212,6 +217,7 @@ in
       repositoryRoot = mkOption {
         type = types.str;
         default = "${cfg.stateDir}/repositories";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/repositories"'';
         description = "Path to the git repositories.";
       };
 

nixos/modules/services/misc/gogs.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.gogs;
+  opt = options.services.gogs;
   configFile = pkgs.writeText "app.ini" ''
     APP_NAME = ${cfg.appName}
     RUN_USER = ${cfg.user}
@@ -129,6 +130,7 @@ in
         path = mkOption {
           type = types.str;
           default = "${cfg.stateDir}/data/gogs.db";
+          defaultText = literalExpression ''"''${config.${opt.stateDir}}/data/gogs.db"'';
           description = "Path to the sqlite3 database file.";
         };
       };
@@ -142,6 +144,7 @@ in
       repositoryRoot = mkOption {
         type = types.str;
         default = "${cfg.stateDir}/repositories";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/repositories"'';
         description = "Path to the git repositories.";
       };
 

nixos/modules/services/misc/headphones.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
@@ -7,6 +7,7 @@ let
   name = "headphones";
 
   cfg = config.services.headphones;
+  opt = options.services.headphones;
 
 in
 
@@ -29,6 +30,7 @@ in
       configFile = mkOption {
         type = types.path;
         default = "${cfg.dataDir}/config.ini";
+        defaultText = literalExpression ''"''${config.${opt.dataDir}}/config.ini"'';
         description = "Path to config file.";
       };
       host = mkOption {

nixos/modules/services/misc/matrix-appservice-discord.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, lib, ... }:
+{ config, options, pkgs, lib, ... }:
 
 with lib;
 
@@ -7,6 +7,7 @@ let
   registrationFile = "${dataDir}/discord-registration.yaml";
   appDir = "${pkgs.matrix-appservice-discord}/${pkgs.matrix-appservice-discord.passthru.nodeAppDir}";
   cfg = config.services.matrix-appservice-discord;
+  opt = options.services.matrix-appservice-discord;
   # TODO: switch to configGen.json once RFC42 is implemented
   settingsFile = pkgs.writeText "matrix-appservice-discord-settings.json" (builtins.toJSON cfg.settings);
 
@@ -74,6 +75,7 @@ in {
       url = mkOption {
         type = types.str;
         default = "http://localhost:${toString cfg.port}";
+        defaultText = literalExpression ''"http://localhost:''${toString config.${opt.port}}"'';
         description = ''
           The URL where the application service is listening for HS requests.
         '';

nixos/modules/services/misc/mwlib.nix

@@ -47,6 +47,9 @@ in
 
       qserve = mkOption {
         default = [ "${cfg.qserve.address}:${toString cfg.qserve.port}" ];
+        defaultText = literalExpression ''
+          [ "''${config.${opt.qserve.address}}:''${toString config.${opt.qserve.port}}"
+        ]'';
         type = types.listOf types.str;
         description = "Register qserve instance.";
       }; # nserve.qserve
@@ -129,7 +132,7 @@ in
           You have to enable it, or use your own way for serving files
           and set the http.url option accordingly.
           '';
-        type = types.submodule ({
+        type = types.submodule ({ config, options, ... }: {
           options = {
             enable = mkOption {
               default = true;
@@ -150,7 +153,8 @@ in
             }; # nslave.http.address
 
             url = mkOption {
-              default = "http://localhost:${toString cfg.nslave.http.port}/cache";
+              default = "http://localhost:${toString config.port}/cache";
+              defaultText = literalExpression ''"http://localhost:''${toString config.${options.port}}/cache"'';
               type = types.str;
               description = ''
                 Specify URL for accessing generated files from cache.

nixos/modules/services/misc/sickbeard.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
@@ -7,6 +7,7 @@ let
   name = "sickbeard";
 
   cfg = config.services.sickbeard;
+  opt = options.services.sickbeard;
   sickbeard = cfg.package;
 
 in
@@ -39,6 +40,7 @@ in
       configFile = mkOption {
         type = types.path;
         default = "${cfg.dataDir}/config.ini";
+        defaultText = literalExpression ''"''${config.${opt.dataDir}}/config.ini"'';
         description = "Path to config file.";
       };
       port = mkOption {

nixos/modules/services/misc/sourcehut/builds.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   scfg = cfg.builds;
   rcfg = config.services.redis;
   iniKey = "builds.sr.ht";
@@ -38,6 +39,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/buildsrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/buildsrht"'';
       description = ''
         State path for builds.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/dispatch.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   cfgIni = cfg.settings;
   scfg = cfg.dispatch;
   iniKey = "dispatch.sr.ht";
@@ -38,6 +39,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/dispatchsrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/dispatchsrht"'';
       description = ''
         State path for dispatch.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/git.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   scfg = cfg.git;
   iniKey = "git.sr.ht";
 
@@ -41,6 +42,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/gitsrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/gitsrht"'';
       description = ''
         State path for git.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/hg.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   scfg = cfg.hg;
   iniKey = "hg.sr.ht";
 
@@ -40,6 +41,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/hgsrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/hgsrht"'';
       description = ''
         State path for hg.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/hub.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   cfgIni = cfg.settings;
   scfg = cfg.hub;
   iniKey = "hub.sr.ht";
@@ -38,6 +39,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/hubsrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/hubsrht"'';
       description = ''
         State path for hub.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/lists.nix

@@ -1,11 +1,12 @@
 # Email setup is fairly involved, useful references:
 # https://drewdevault.com/2018/08/05/Local-mail-server.html
 
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   cfgIni = cfg.settings;
   scfg = cfg.lists;
   iniKey = "lists.sr.ht";
@@ -42,6 +43,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/listssrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/listssrht"'';
       description = ''
         State path for lists.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/man.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   cfgIni = cfg.settings;
   scfg = cfg.man;
   iniKey = "man.sr.ht";
@@ -38,6 +39,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/mansrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/mansrht"'';
       description = ''
         State path for man.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/meta.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   cfgIni = cfg.settings;
   scfg = cfg.meta;
   iniKey = "meta.sr.ht";
@@ -39,6 +40,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/metasrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/metasrht"'';
       description = ''
         State path for meta.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/paste.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   cfgIni = cfg.settings;
   scfg = cfg.paste;
   iniKey = "paste.sr.ht";
@@ -39,6 +40,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/pastesrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/pastesrht"'';
       description = ''
         State path for pastesrht.sr.ht.
       '';

nixos/modules/services/misc/sourcehut/todo.nix

@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 let
   cfg = config.services.sourcehut;
+  opt = options.services.sourcehut;
   cfgIni = cfg.settings;
   scfg = cfg.todo;
   iniKey = "todo.sr.ht";
@@ -39,6 +40,7 @@ in
     statePath = mkOption {
       type = types.path;
       default = "${cfg.statePath}/todosrht";
+      defaultText = literalExpression ''"''${config.${opt.statePath}}/todosrht"'';
       description = ''
         State path for todo.sr.ht.
       '';

nixos/modules/services/monitoring/grafana.nix

@@ -404,6 +404,7 @@ in {
       path = mkOption {
         description = "Database path.";
         default = "${cfg.dataDir}/data/grafana.db";
+        defaultText = literalExpression ''"''${config.${opt.dataDir}}/data/grafana.db"'';
         type = types.path;
       };
 

nixos/modules/services/monitoring/graphite.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.graphite;
+  opt = options.services.graphite;
   writeTextOrNull = f: t: mapNullable (pkgs.writeTextDir f) t;
 
   dataDir = cfg.dataDir;
@@ -312,12 +313,14 @@ in {
 
       seyrenUrl = mkOption {
         default = "http://localhost:${toString cfg.seyren.port}/";
+        defaultText = literalExpression ''"http://localhost:''${toString config.${opt.seyren.port}}/"'';
         description = "Host where seyren is accessible.";
         type = types.str;
       };
 
       graphiteUrl = mkOption {
         default = "http://${cfg.web.listenAddress}:${toString cfg.web.port}";
+        defaultText = literalExpression ''"http://''${config.${opt.web.listenAddress}}:''${toString config.${opt.web.port}}"'';
         description = "Host where graphite service runs.";
         type = types.str;
       };

nixos/modules/services/security/privacyidea.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.privacyidea;
+  opt = options.services.privacyidea;
 
   uwsgi = pkgs.uwsgi.override { plugins = [ "python3" ]; };
   python = uwsgi.python3;
@@ -112,6 +113,7 @@ in
       encFile = mkOption {
         type = types.str;
         default = "${cfg.stateDir}/enckey";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/enckey"'';
         description = ''
           This is used to encrypt the token data and token passwords
         '';
@@ -120,6 +122,7 @@ in
       auditKeyPrivate = mkOption {
         type = types.str;
         default = "${cfg.stateDir}/private.pem";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/private.pem"'';
         description = ''
           Private Key for signing the audit log.
         '';
@@ -128,6 +131,7 @@ in
       auditKeyPublic = mkOption {
         type = types.str;
         default = "${cfg.stateDir}/public.pem";
+        defaultText = literalExpression ''"''${config.${opt.stateDir}}/public.pem"'';
         description = ''
           Public key for checking signatures of the audit log.
         '';

nixos/modules/services/torrent/peerflix.nix

@@ -1,9 +1,10 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 with lib;
 
 let
   cfg = config.services.peerflix;
+  opt = options.services.peerflix;
 
   configFile = pkgs.writeText "peerflix-config.json" ''
     {
@@ -32,6 +33,7 @@ in {
     downloadDir = mkOption {
       description = "Peerflix temporary download directory.";
       default = "${cfg.stateDir}/torrents";
+      defaultText = literalExpression ''"''${config.${opt.stateDir}}/torrents"'';
       type = types.path;
     };
   };

nixos/modules/services/torrent/rtorrent.nix

@@ -1,10 +1,11 @@
-{ config, pkgs, lib, ... }:
+{ config, options, pkgs, lib, ... }:
 
 with lib;
 
 let
 
   cfg = config.services.rtorrent;
+  opt = options.services.rtorrent;
 
 in {
   options.services.rtorrent = {
@@ -21,6 +22,7 @@ in {
     downloadDir = mkOption {
       type = types.str;
       default = "${cfg.dataDir}/download";
+      defaultText = literalExpression ''"''${config.${opt.dataDir}}/download"'';
       description = ''
         Where to put downloaded files.
       '';

nixos/modules/services/video/unifi-video.nix

@@ -1,7 +1,8 @@
-{ config, lib, pkgs, utils, ... }:
+{ config, lib, options, pkgs, utils, ... }:
 with lib;
 let
   cfg = config.services.unifi-video;
+  opt = options.services.unifi-video;
   mainClass = "com.ubnt.airvision.Main";
   cmd = ''
     ${pkgs.jsvc}/bin/jsvc \
@@ -164,6 +165,7 @@ in
       pidFile = mkOption {
         type = types.path;
         default = "${cfg.dataDir}/unifi-video.pid";
+        defaultText = literalExpression ''"''${config.${opt.dataDir}}/unifi-video.pid"'';
         description = "Location of unifi-video pid file.";
       };