{ lib, pkgs, ... }:

with lib;

{
  imports = [
    (mkRenamedOptionModule [ "networking" "enableRT73Firmware" ] [ "hardware" "enableRedistributableFirmware" ])
    (mkRenamedOptionModule [ "networking" "enableIntel3945ABGFirmware" ] [ "hardware" "enableRedistributableFirmware" ])
    (mkRenamedOptionModule [ "networking" "enableIntel2100BGFirmware" ] [ "hardware" "enableRedistributableFirmware" ])
    (mkRenamedOptionModule [ "networking" "enableRalinkFirmware" ] [ "hardware" "enableRedistributableFirmware" ])
    (mkRenamedOptionModule [ "networking" "enableRTL8192cFirmware" ] [ "hardware" "enableRedistributableFirmware" ])
    (mkRenamedOptionModule [ "networking" "networkmanager" "useDnsmasq" ] [ "networking" "networkmanager" "dns" ])
    (mkRenamedOptionModule [ "networking" "connman" ] [ "services" "connman" ])
    (mkRenamedOptionModule [ "networking" "defaultMailServer" ] [ "services" "ssmtp" ])
    (mkRenamedOptionModule [ "services" "ssmtp" "directDelivery" ] [ "services" "ssmtp" "enable" ])
    (mkChangedOptionModule [ "services" "printing" "gutenprint" ] [ "services" "printing" "drivers" ]
      (config:
        let enabled = getAttrFromPath [ "services" "printing" "gutenprint" ] config;
        in if enabled then [ pkgs.gutenprint ] else [ ]))
    (mkChangedOptionModule [ "services" "ddclient" "domain" ] [ "services" "ddclient" "domains" ]
      (config:
        let value = getAttrFromPath [ "services" "ddclient" "domain" ] config;
        in if value != "" then [ value ] else []))
    (mkRemovedOptionModule [ "services" "ddclient" "homeDir" ] "")
    (mkRenamedOptionModule [ "services" "flatpak" "extraPortals" ] [ "xdg" "portal" "extraPortals" ])
    (mkRenamedOptionModule [ "services" "i2pd" "extIp" ] [ "services" "i2pd" "address" ])
    (mkRenamedOptionModule [ "services" "kubernetes" "apiserver" "admissionControl" ] [ "services" "kubernetes" "apiserver" "enableAdmissionPlugins" ])
    (mkRenamedOptionModule [ "services" "kubernetes" "apiserver" "address" ] ["services" "kubernetes" "apiserver" "bindAddress"])
    (mkRenamedOptionModule [ "services" "kubernetes" "apiserver" "port" ] ["services" "kubernetes" "apiserver" "insecurePort"])
    (mkRemovedOptionModule [ "services" "kubernetes" "apiserver" "publicAddress" ] "")
    (mkRenamedOptionModule [ "services" "kubernetes" "addons" "dashboard" "enableRBAC" ] [ "services" "kubernetes" "addons" "dashboard" "rbac" "enable" ])
    (mkRenamedOptionModule [ "services" "kubernetes" "controllerManager" "address" ] ["services" "kubernetes" "controllerManager" "bindAddress"])
    (mkRenamedOptionModule [ "services" "kubernetes" "controllerManager" "port" ] ["services" "kubernetes" "controllerManager" "insecurePort"])
    (mkRenamedOptionModule [ "services" "kubernetes" "etcd" "servers" ] [ "services" "kubernetes" "apiserver" "etcd" "servers" ])
    (mkRenamedOptionModule [ "services" "kubernetes" "etcd" "keyFile" ] [ "services" "kubernetes" "apiserver" "etcd" "keyFile" ])
    (mkRenamedOptionModule [ "services" "kubernetes" "etcd" "certFile" ] [ "services" "kubernetes" "apiserver" "etcd" "certFile" ])
    (mkRenamedOptionModule [ "services" "kubernetes" "etcd" "caFile" ] [ "services" "kubernetes" "apiserver" "etcd" "caFile" ])
    (mkRemovedOptionModule [ "services" "kubernetes" "kubelet" "applyManifests" ] "")
    (mkRemovedOptionModule [ "services" "kubernetes" "kubelet" "cadvisorPort" ] "")
    (mkRemovedOptionModule [ "services" "kubernetes" "kubelet" "allowPrivileged" ] "")
    (mkRenamedOptionModule [ "services" "kubernetes" "proxy" "address" ] ["services" "kubernetes" "proxy" "bindAddress"])
    (mkRemovedOptionModule [ "services" "kubernetes" "verbose" ] "")
    (mkRenamedOptionModule [ "services" "logstash" "address" ] [ "services" "logstash" "listenAddress" ])
    (mkRenamedOptionModule [ "services" "neo4j" "host" ] [ "services" "neo4j" "defaultListenAddress" ])
    (mkRenamedOptionModule [ "services" "neo4j" "listenAddress" ] [ "services" "neo4j" "defaultListenAddress" ])
    (mkRenamedOptionModule [ "services" "neo4j" "enableBolt" ] [ "services" "neo4j" "bolt" "enable" ])
    (mkRenamedOptionModule [ "services" "neo4j" "enableHttps" ] [ "services" "neo4j" "https" "enable" ])
    (mkRenamedOptionModule [ "services" "neo4j" "certDir" ] [ "services" "neo4j" "directories" "certificates" ])
    (mkRenamedOptionModule [ "services" "neo4j" "dataDir" ] [ "services" "neo4j" "directories" "home" ])
    (mkRemovedOptionModule [ "services" "neo4j" "port" ] "Use services.neo4j.http.listenAddress instead.")
    (mkRemovedOptionModule [ "services" "neo4j" "boltPort" ] "Use services.neo4j.bolt.listenAddress instead.")
    (mkRemovedOptionModule [ "services" "neo4j" "httpsPort" ] "Use services.neo4j.https.listenAddress instead.")
    (mkRemovedOptionModule [ "services" "misc" "nzbget" "configFile" ] "The configuration of nzbget is now managed by users through the web interface.")
    (mkRemovedOptionModule [ "services" "misc" "nzbget" "dataDir" ] "The data directory for nzbget is now /var/lib/nzbget.")
    (mkRemovedOptionModule [ "services" "misc" "nzbget" "openFirewall" ] "The port used by nzbget is managed through the web interface so you should adjust your firewall rules accordingly.")
    (mkRemovedOptionModule [ "services" "prometheus" "alertmanager" "user" ] "The alertmanager service is now using systemd's DynamicUser mechanism which obviates a user setting.")
    (mkRemovedOptionModule [ "services" "prometheus" "alertmanager" "group" ] "The alertmanager service is now using systemd's DynamicUser mechanism which obviates a group setting.")
    (mkRemovedOptionModule [ "services" "prometheus" "alertmanagerURL" ] ''
      Due to incompatibility, the alertmanagerURL option has been removed,
      please use 'services.prometheus2.alertmanagers' instead.
    '')
    (mkRenamedOptionModule [ "services" "prometheus2" ] [ "services" "prometheus" ])
    (mkRenamedOptionModule [ "services" "tor" "relay" "portSpec" ] [ "services" "tor" "relay" "port" ])
    (mkRenamedOptionModule [ "services" "vmwareGuest" ] [ "virtualisation" "vmware" "guest" ])
    (mkRenamedOptionModule [ "jobs" ] [ "systemd" "services" ])

    (mkRenamedOptionModule [ "services" "gitlab" "stateDir" ] [ "services" "gitlab" "statePath" ])
    (mkRemovedOptionModule [ "services" "gitlab" "satelliteDir" ] "")

    (mkRenamedOptionModule [ "services" "clamav" "updater" "config" ] [ "services" "clamav" "updater" "extraConfig" ])

    (mkRemovedOptionModule [ "services" "pykms" "verbose" ] "Use services.pykms.logLevel instead")

    (mkRemovedOptionModule [ "security" "setuidOwners" ] "Use security.wrappers instead")
    (mkRemovedOptionModule [ "security" "setuidPrograms" ] "Use security.wrappers instead")

    (mkRenamedOptionModule [ "security" "virtualization" "flushL1DataCache" ] [ "security" "virtualisation" "flushL1DataCache" ])

    # PAM
    (mkRenamedOptionModule [ "security" "pam" "enableU2F" ] [ "security" "pam" "u2f" "enable" ])

    # rmilter/rspamd
    (mkRemovedOptionModule [ "services" "rmilter" ] "Use services.rspamd.* instead to set up milter service")

    # Xsession script
    (mkRenamedOptionModule [ "services" "xserver" "displayManager" "job" "logsXsession" ] [ "services" "xserver" "displayManager" "job" "logToFile" ])
    (mkRenamedOptionModule [ "services" "xserver" "displayManager" "logToJournal" ] [ "services" "xserver" "displayManager" "job" "logToJournal" ])

    # Old Grub-related options.
    (mkRenamedOptionModule [ "boot" "loader" "grub" "timeout" ] [ "boot" "loader" "timeout" ])
    (mkRenamedOptionModule [ "boot" "loader" "gummiboot" "timeout" ] [ "boot" "loader" "timeout" ])

    # OpenSSH
    (mkAliasOptionModule [ "services" "sshd" "enable" ] [ "services" "openssh" "enable" ])
    (mkAliasOptionModule [ "services" "openssh" "knownHosts" ] [ "programs" "ssh" "knownHosts" ])

    # libvirtd
    (mkRemovedOptionModule [ "virtualisation" "libvirtd" "enableKVM" ]
      "Set the option `virtualisation.libvirtd.qemuPackage' instead.")

    # ibus
    (mkRenamedOptionModule [ "programs" "ibus" "plugins" ] [ "i18n" "inputMethod" "ibus" "engines" ])

    # sandboxing
    (mkRenamedOptionModule [ "nix" "useChroot" ] [ "nix" "useSandbox" ])
    (mkRenamedOptionModule [ "nix" "chrootDirs" ] [ "nix" "sandboxPaths" ])

    (mkRenamedOptionModule [ "services" "xserver" "vaapiDrivers" ] [ "hardware" "opengl" "extraPackages" ])

    (mkAliasOptionModule [ "environment" "checkConfigurationOptions" ] [ "_module" "check" ])

    # opendkim
    (mkRenamedOptionModule [ "services" "opendkim" "keyFile" ] [ "services" "opendkim" "keyPath" ])

    # Enlightenment
    (mkRenamedOptionModule [ "services" "xserver" "desktopManager" "e19" "enable" ] [ "services" "xserver" "desktopManager" "enlightenment" "enable" ])

    # Iodine
    (mkRenamedOptionModule [ "services" "iodined" "enable" ] [ "services" "iodine" "server" "enable" ])
    (mkRenamedOptionModule [ "services" "iodined" "domain" ] [ "services" "iodine" "server" "domain" ])
    (mkRenamedOptionModule [ "services" "iodined" "ip" ] [ "services" "iodine" "server" "ip" ])
    (mkRenamedOptionModule [ "services" "iodined" "extraConfig" ] [ "services" "iodine" "server" "extraConfig" ])
    (mkRemovedOptionModule [ "services" "iodined" "client" ] "")

    # Unity3D
    (mkRenamedOptionModule [ "programs" "unity3d" "enable" ] [ "security" "chromiumSuidSandbox" "enable" ])

    # murmur
    (mkRenamedOptionModule [ "services" "murmur" "welcome" ] [ "services" "murmur" "welcometext" ])
    (mkRemovedOptionModule [ "services" "murmur" "pidfile" ] "Hardcoded to /run/murmur/murmurd.pid now")

    # parsoid
    (mkRemovedOptionModule [ "services" "parsoid" "interwikis" ] "Use services.parsoid.wikis instead")

    # plexpy / tautulli
    (mkRenamedOptionModule [ "services" "plexpy" ] [ "services" "tautulli" ])

    # piwik was renamed to matomo
    (mkRenamedOptionModule [ "services" "piwik" "enable" ] [ "services" "matomo" "enable" ])
    (mkRenamedOptionModule [ "services" "piwik" "webServerUser" ] [ "services" "matomo" "webServerUser" ])
    (mkRemovedOptionModule [ "services" "piwik" "phpfpmProcessManagerConfig" ] "Use services.phpfpm.pools.<name>.settings")
    (mkRemovedOptionModule [ "services" "matomo" "phpfpmProcessManagerConfig" ] "Use services.phpfpm.pools.<name>.settings")
    (mkRenamedOptionModule [ "services" "piwik" "nginx" ] [ "services" "matomo" "nginx" ])

    # tarsnap
    (mkRemovedOptionModule [ "services" "tarsnap" "cachedir" ] "Use services.tarsnap.archives.<name>.cachedir")

    # alsa
    (mkRenamedOptionModule [ "sound" "enableMediaKeys" ] [ "sound" "mediaKeys" "enable" ])

    # postgrey
    (mkMergedOptionModule [ [ "services" "postgrey" "inetAddr" ] [ "services" "postgrey" "inetPort" ] ] [ "services" "postgrey" "socket" ] (config: let
        value = p: getAttrFromPath p config;
        inetAddr = [ "services" "postgrey" "inetAddr" ];
        inetPort = [ "services" "postgrey" "inetPort" ];
      in
        if value inetAddr == null
        then { path = "/run/postgrey.sock"; }
        else { addr = value inetAddr; port = value inetPort; }
    ))

    # dhcpd
    (mkRenamedOptionModule [ "services" "dhcpd" ] [ "services" "dhcpd4" ])

    # locate
    (mkRenamedOptionModule [ "services" "locate" "period" ] [ "services" "locate" "interval" ])
    (mkRemovedOptionModule [ "services" "locate" "includeStore" ] "Use services.locate.prunePaths" )

    # nfs
    (mkRenamedOptionModule [ "services" "nfs" "lockdPort" ] [ "services" "nfs" "server" "lockdPort" ])
    (mkRenamedOptionModule [ "services" "nfs" "statdPort" ] [ "services" "nfs" "server" "statdPort" ])

    # KDE Plasma 5
    (mkRenamedOptionModule [ "services" "xserver" "desktopManager" "kde5" ] [ "services" "xserver" "desktopManager" "plasma5" ])

    # Fontconfig
    (mkRenamedOptionModule [ "fonts" "fontconfig" "ultimate" "allowBitmaps" ] [ "fonts" "fontconfig" "allowBitmaps" ])
    (mkRenamedOptionModule [ "fonts" "fontconfig" "ultimate" "allowType1" ] [ "fonts" "fontconfig" "allowType1" ])
    (mkRenamedOptionModule [ "fonts" "fontconfig" "ultimate" "useEmbeddedBitmaps" ] [ "fonts" "fontconfig" "useEmbeddedBitmaps" ])
    (mkRenamedOptionModule [ "fonts" "fontconfig" "ultimate" "forceAutohint" ] [ "fonts" "fontconfig" "forceAutohint" ])
    (mkRenamedOptionModule [ "fonts" "fontconfig" "ultimate" "renderMonoTTFAsBitmap" ] [ "fonts" "fontconfig" "renderMonoTTFAsBitmap" ])

    # postgresqlBackup
    (mkRemovedOptionModule [ "services" "postgresqlBackup" "period" ] ''
       A systemd timer is now used instead of cron.
       The starting time can be configured via <literal>services.postgresqlBackup.startAt</literal>.
    '')

    # phpfpm
    (mkRemovedOptionModule [ "services" "phpfpm" "poolConfigs" ] "Use services.phpfpm.pools instead.")

    # zabbixServer
    (mkRenamedOptionModule [ "services" "zabbixServer" "dbServer" ] [ "services" "zabbixServer" "database" "host" ])

    # Profile splitting
    (mkRenamedOptionModule [ "virtualisation" "growPartition" ] [ "boot" "growPartition" ])

    # misc/version.nix
    (mkRenamedOptionModule [ "system" "nixosVersion" ] [ "system" "nixos" "version" ])
    (mkRenamedOptionModule [ "system" "nixosVersionSuffix" ] [ "system" "nixos" "versionSuffix" ])
    (mkRenamedOptionModule [ "system" "nixosRevision" ] [ "system" "nixos" "revision" ])
    (mkRenamedOptionModule [ "system" "nixosLabel" ] [ "system" "nixos" "label" ])

    # Users
    (mkAliasOptionModule [ "users" "extraUsers" ] [ "users" "users" ])
    (mkAliasOptionModule [ "users" "extraGroups" ] [ "users" "groups" ])

    # Options that are obsolete and have no replacement.
    (mkRemovedOptionModule [ "boot" "initrd" "luks" "enable" ] "")
    (mkRemovedOptionModule [ "programs" "bash" "enable" ] "")
    (mkRemovedOptionModule [ "services" "samba" "defaultShare" ] "")
    (mkRemovedOptionModule [ "services" "syslog-ng" "serviceName" ] "")
    (mkRemovedOptionModule [ "services" "syslog-ng" "listenToJournal" ] "")
    (mkRemovedOptionModule [ "ec2" "metadata" ] "")
    (mkRemovedOptionModule [ "services" "openvpn" "enable" ] "")
    (mkRemovedOptionModule [ "services" "printing" "cupsFilesConf" ] "")
    (mkRemovedOptionModule [ "services" "printing" "cupsdConf" ] "")
    (mkRemovedOptionModule [ "services" "tor" "relay" "isBridge" ] "Use services.tor.relay.role instead.")
    (mkRemovedOptionModule [ "services" "tor" "relay" "isExit" ] "Use services.tor.relay.role instead.")
    (mkRemovedOptionModule [ "services" "xserver" "startGnuPGAgent" ]
      "See the 16.09 release notes for more information.")
    (mkRemovedOptionModule [ "services" "phpfpm" "phpIni" ] "")
    (mkRemovedOptionModule [ "services" "dovecot2" "package" ] "")
    (mkRemovedOptionModule [ "services" "firefox" "syncserver" "user" ] "")
    (mkRemovedOptionModule [ "services" "firefox" "syncserver" "group" ] "")
    (mkRemovedOptionModule [ "fonts" "fontconfig" "hinting" "style" ] "")
    (mkRemovedOptionModule [ "services" "xserver" "displayManager" "sddm" "themes" ]
      "Set the option `services.xserver.displayManager.sddm.package' instead.")
    (mkRemovedOptionModule [ "services" "xserver" "desktopManager" "xfce" "screenLock" ] "")
    (mkRemovedOptionModule [ "fonts" "fontconfig" "forceAutohint" ] "")
    (mkRemovedOptionModule [ "fonts" "fontconfig" "renderMonoTTFAsBitmap" ] "")
    (mkRemovedOptionModule [ "virtualisation" "xen" "qemu" ] "You don't need this option anymore, it will work without it.")
    (mkRemovedOptionModule [ "services" "logstash" "enableWeb" ] "The web interface was removed from logstash")
    (mkRemovedOptionModule [ "boot" "zfs" "enableLegacyCrypto" ] "The corresponding package was removed from nixpkgs.")
    (mkRemovedOptionModule [ "services" "winstone" ] "The corresponding package was removed from nixpkgs.")
    (mkRemovedOptionModule [ "services" "mysql" "pidDir" ] "Don't wait for pidfiles, describe dependencies through systemd")
    (mkRemovedOptionModule [ "services" "mysql" "rootPassword" ] "Use socket authentication or set the password outside of the nix store.")
    (mkRemovedOptionModule [ "services" "zabbixServer" "dbPassword" ] "Use services.zabbixServer.database.passwordFile instead.")
    (mkRemovedOptionModule [ "systemd" "generator-packages" ] "Use systemd.packages instead.")
    (mkRemovedOptionModule [ "fonts" "enableCoreFonts" ] "Use fonts.fonts = [ pkgs.corefonts ]; instead.")
    (mkRemovedOptionModule [ "networking" "vpnc" ] "Use environment.etc.\"vpnc/service.conf\" instead.")

    # ZSH
    (mkRenamedOptionModule [ "programs" "zsh" "enableSyntaxHighlighting" ] [ "programs" "zsh" "syntaxHighlighting" "enable" ])
    (mkRenamedOptionModule [ "programs" "zsh" "syntax-highlighting" "enable" ] [ "programs" "zsh" "syntaxHighlighting" "enable" ])
    (mkRenamedOptionModule [ "programs" "zsh" "syntax-highlighting" "highlighters" ] [ "programs" "zsh" "syntaxHighlighting" "highlighters" ])
    (mkRenamedOptionModule [ "programs" "zsh" "syntax-highlighting" "patterns" ] [ "programs" "zsh" "syntaxHighlighting" "patterns" ])
    (mkRenamedOptionModule [ "programs" "zsh" "oh-my-zsh" "enable" ] [ "programs" "zsh" "ohMyZsh" "enable" ])
    (mkRenamedOptionModule [ "programs" "zsh" "oh-my-zsh" "theme" ] [ "programs" "zsh" "ohMyZsh" "theme" ])
    (mkRenamedOptionModule [ "programs" "zsh" "oh-my-zsh" "custom" ] [ "programs" "zsh" "ohMyZsh" "custom" ])
    (mkRenamedOptionModule [ "programs" "zsh" "oh-my-zsh" "plugins" ] [ "programs" "zsh" "ohMyZsh" "plugins" ])

    (mkRenamedOptionModule [ "programs" "zsh" "enableAutosuggestions" ] [ "programs" "zsh" "autosuggestions" "enable" ])

    # Xen
    (mkRenamedOptionModule [ "virtualisation" "xen" "qemu-package" ] [ "virtualisation" "xen" "package-qemu" ])

    (mkRenamedOptionModule [ "programs" "info" "enable" ] [ "documentation" "info" "enable" ])
    (mkRenamedOptionModule [ "programs" "man"  "enable" ] [ "documentation" "man"  "enable" ])
    (mkRenamedOptionModule [ "services" "nixosManual" "enable" ] [ "documentation" "nixos" "enable" ])

    # ckb
    (mkRenamedOptionModule [ "hardware" "ckb" "enable" ] [ "hardware" "ckb-next" "enable" ])
    (mkRenamedOptionModule [ "hardware" "ckb" "package" ] [ "hardware" "ckb-next" "package" ])

    # binfmt
    (mkRenamedOptionModule [ "boot" "binfmtMiscRegistrations" ] [ "boot" "binfmt" "registrations" ])

    # ACME
    (mkRemovedOptionModule [ "security" "acme" "directory"] "ACME Directory is now hardcoded to /var/lib/acme and its permisisons are managed by systemd. See https://github.com/NixOS/nixpkgs/issues/53852 for more info.")
    (mkRemovedOptionModule [ "security" "acme" "preDelay"] "This option has been removed. If you want to make sure that something executes before certificates are provisioned, add a RequiredBy=acme-\${cert}.service to the service you want to execute before the cert renewal")
    (mkRemovedOptionModule [ "security" "acme" "activationDelay"] "This option has been removed. If you want to make sure that something executes before certificates are provisioned, add a RequiredBy=acme-\${cert}.service to the service you want to execute before the cert renewal")

    # KSM
    (mkRenamedOptionModule [ "hardware" "enableKSM" ] [ "hardware" "ksm" "enable" ])

    # resolvconf
    (mkRenamedOptionModule [ "networking" "dnsSingleRequest" ] [ "networking" "resolvconf" "dnsSingleRequest" ])
    (mkRenamedOptionModule [ "networking" "dnsExtensionMechanism" ] [ "networking" "resolvconf" "dnsExtensionMechanism" ])
    (mkRenamedOptionModule [ "networking" "extraResolvconfConf" ] [ "networking" "resolvconf" "extraConfig" ])
    (mkRenamedOptionModule [ "networking" "resolvconfOptions" ] [ "networking" "resolvconf" "extraOptions" ])

    # BLCR
    (mkRemovedOptionModule [ "environment.blcr.enable" ] "The BLCR module has been removed")

    # beegfs
    (mkRemovedOptionModule [ "services.beegfsEnable" ] "The BeeGFS module has been removed")
    (mkRemovedOptionModule [ "services.beegfs" ] "The BeeGFS module has been removed")

    # osquery
    (mkRemovedOptionModule [ "services.osquery" ] "The osquery module has been removed")

    # Redis
    (mkRemovedOptionModule [ "services" "redis" "user" ] "The redis module now is hardcoded to the redis user.")
    (mkRemovedOptionModule [ "services" "redis" "dbpath" ] "The redis module now uses /var/lib/redis as data directory.")
    (mkRemovedOptionModule [ "services" "redis" "dbFilename" ] "The redis module now uses /var/lib/redis/dump.rdb as database dump location.")
    (mkRemovedOptionModule [ "services" "redis" "appendOnlyFilename" ] "This option was never used.")
    (mkRemovedOptionModule [ "services" "redis" "pidFile" ] "This option was removed.")

  ] ++ (forEach [ "blackboxExporter" "collectdExporter" "fritzboxExporter"
                   "jsonExporter" "minioExporter" "nginxExporter" "nodeExporter"
                   "snmpExporter" "unifiExporter" "varnishExporter" ]
       (opt: mkRemovedOptionModule [ "services" "prometheus" "${opt}" ] ''
         The prometheus exporters are now configured using `services.prometheus.exporters'.
         See the 18.03 release notes for more information.
       '' ))

    ++ (forEach [ "enable" "substitutions" "preset" ]
       (opt: mkRemovedOptionModule [ "fonts" "fontconfig" "ultimate" "${opt}" ] ''
         The fonts.fontconfig.ultimate module and configuration is obsolete.
         The repository has since been archived and activity has ceased.
         https://github.com/bohoomil/fontconfig-ultimate/issues/171.
         No action should be needed for font configuration, as the fonts.fontconfig
         module is already used by default.
       '' ));
}