mirror of
https://github.com/nix-community/home-manager
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749 lines
26 KiB
Nix
749 lines
26 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.syncthing;
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settingsFormat = pkgs.formats.json { };
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cleanedConfig =
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converge (filterAttrsRecursive (_: v: v != null && v != { })) cfg.settings;
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isUnixGui = (builtins.substring 0 1 cfg.guiAddress) == "/";
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# syncthing's configuration directory (see https://docs.syncthing.net/users/config.html)
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syncthing_dir = if pkgs.stdenv.isDarwin then
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"$HOME/Library/Application Support/Syncthing"
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else
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"\${XDG_STATE_HOME:-$HOME/.local/state}/syncthing";
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# Syncthing supports serving the GUI over Unix sockets. If that happens, the
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# API is served over the Unix socket as well. This function returns the correct
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# curl arguments for the address portion of the curl command for both network
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# and Unix socket addresses.
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curlAddressArgs = path:
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if isUnixGui
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# if cfg.guiAddress is a unix socket, tell curl explicitly about it
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# note that the dot in front of `${path}` is the hostname, which is
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# required.
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then
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"--unix-socket ${cfg.guiAddress} http://.${path}"
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# no adjustements are needed if cfg.guiAddress is a network address
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else
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"${cfg.guiAddress}${path}";
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devices = mapAttrsToList (_: device: device // { deviceID = device.id; })
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cfg.settings.devices;
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folders = mapAttrsToList (_: folder:
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folder // {
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devices = map (device:
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if builtins.isString device then {
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deviceId = cfg.settings.devices.${device}.id;
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} else
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device) folder.devices;
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}) (filterAttrs (_: folder: folder.enable) cfg.settings.folders);
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jq = "${pkgs.jq}/bin/jq";
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sleep = "${pkgs.coreutils}/bin/sleep";
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printf = "${pkgs.coreutils}/bin/printf";
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cat = "${pkgs.coreutils}/bin/cat";
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curl = "${pkgs.curl}/bin/curl";
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install = "${pkgs.coreutils}/bin/install";
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syncthing = "${pkgs.syncthing}/bin/syncthing";
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copyKeys = pkgs.writers.writeBash "syncthing-copy-keys" ''
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${install} -dm700 "${syncthing_dir}"
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${optionalString (cfg.cert != null) ''
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${install} -Dm400 ${
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toString cfg.cert
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} "${syncthing_dir}/cert.pem"
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''}
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${optionalString (cfg.key != null) ''
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${install} -Dm400 ${
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toString cfg.key
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} "${syncthing_dir}/key.pem"
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''}
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'';
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curlShellFunction = ''
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curl() {
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# get the api key by parsing the config.xml
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while
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! ${pkgs.libxml2}/bin/xmllint \
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--xpath 'string(configuration/gui/apikey)' \
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"${syncthing_dir}/config.xml" \
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>"$RUNTIME_DIRECTORY/api_key"
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do ${sleep} 1; done
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(${printf} "X-API-Key: "; ${cat} "$RUNTIME_DIRECTORY/api_key") >"$RUNTIME_DIRECTORY/headers"
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${curl} -sSLk -H "@$RUNTIME_DIRECTORY/headers" \
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--retry 1000 --retry-delay 1 --retry-all-errors \
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"$@"
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}
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'';
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updateConfig = pkgs.writers.writeBash "merge-syncthing-config" (''
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set -efu
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# be careful not to leak secrets in the filesystem or in process listings
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umask 0077
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${curlShellFunction}
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'' +
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/* Syncthing's rest API for the folders and devices is almost identical.
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Hence we iterate them using lib.pipe and generate shell commands for both at
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the same time.
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*/
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(lib.pipe {
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# The attributes below are the only ones that are different for devices /
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# folders.
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devs = {
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new_conf_IDs = map (v: v.id) devices;
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GET_IdAttrName = "deviceID";
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override = cfg.overrideDevices;
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conf = devices;
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baseAddress = curlAddressArgs "/rest/config/devices";
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};
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dirs = {
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new_conf_IDs = map (v: v.id) folders;
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GET_IdAttrName = "id";
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override = cfg.overrideFolders;
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conf = folders;
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baseAddress = curlAddressArgs "/rest/config/folders";
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};
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} [
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# Now for each of these attributes, write the curl commands that are
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# identical to both folders and devices.
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(mapAttrs (conf_type: s:
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# We iterate the `conf` list now, and run a curl -X POST command for each, that
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# should update that device/folder only.
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lib.pipe s.conf [
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# Quoting https://docs.syncthing.net/rest/config.html:
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#
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# > PUT takes an array and POST a single object. In both cases if a
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# given folder/device already exists, it’s replaced, otherwise a new
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# one is added.
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#
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# What's not documented, is that using PUT will remove objects that
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# don't exist in the array given. That's why we use here `POST`, and
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# only if s.override == true then we DELETE the relevant folders
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# afterwards.
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(map (new_cfg: ''
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curl -d ${
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lib.escapeShellArg (builtins.toJSON new_cfg)
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} -X POST ${s.baseAddress}
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''))
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(lib.concatStringsSep "\n")
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]
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/* If we need to override devices/folders, we iterate all currently configured
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IDs, via another `curl -X GET`, and we delete all IDs that are not part of
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the Nix configured list of IDs
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*/
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+ lib.optionalString s.override ''
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stale_${conf_type}_ids="$(curl -X GET ${s.baseAddress} | ${jq} \
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--argjson new_ids ${
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lib.escapeShellArg (builtins.toJSON s.new_conf_IDs)
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} \
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--raw-output \
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'[.[].${s.GET_IdAttrName}] - $new_ids | .[]'
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)"
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for id in ''${stale_${conf_type}_ids}; do
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curl -X DELETE ${s.baseAddress}/$id
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done
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''))
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builtins.attrValues
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(lib.concatStringsSep "\n")
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]) +
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/* Now we update the other settings defined in cleanedConfig which are not
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"folders" or "devices".
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*/
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(lib.pipe cleanedConfig [
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builtins.attrNames
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(lib.subtractLists [ "folders" "devices" ])
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(map (subOption: ''
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curl -X PUT -d ${
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lib.escapeShellArg (builtins.toJSON cleanedConfig.${subOption})
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} ${curlAddressArgs "/rest/config/${subOption}"}
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''))
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(lib.concatStringsSep "\n")
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]) + lib.optionalString (cfg.passwordFile != null) ''
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syncthing_password=$(${cat} ${cfg.passwordFile})
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curl -X PATCH -d '{"password": "'$syncthing_password'"}' ${
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curlAddressArgs "/rest/config/gui"
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}
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'' + ''
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# restart Syncthing if required
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if curl ${curlAddressArgs "/rest/config/restart-required"} |
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${jq} -e .requiresRestart > /dev/null; then
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curl -X POST ${curlAddressArgs "/rest/system/restart"}
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fi
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'');
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defaultSyncthingArgs = [
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"${syncthing}"
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"-no-browser"
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"-no-restart"
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"-no-upgrade"
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"-gui-address=${if isUnixGui then "unix://" else ""}${cfg.guiAddress}"
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"-logflags=0"
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];
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syncthingArgs = defaultSyncthingArgs ++ cfg.extraOptions;
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in {
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meta.maintainers = [ maintainers.rycee ];
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options = with types; {
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services.syncthing = {
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enable = mkEnableOption ''
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Syncthing, a self-hosted open-source alternative to Dropbox and Bittorrent Sync.
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Further declarative configuration options only supported on Linux devices.
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'';
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cert = mkOption {
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type = nullOr str;
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default = null;
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description = ''
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Path to the `cert.pem` file, which will be copied into Syncthing's
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config directory.
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'';
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};
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key = mkOption {
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type = nullOr str;
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default = null;
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description = ''
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Path to the `key.pem` file, which will be copied into Syncthing's
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config directory.
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'';
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};
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passwordFile = mkOption {
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type = nullOr path;
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default = null;
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description = ''
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Path to the gui password file.
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'';
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};
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overrideDevices = mkOption {
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type = bool;
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default = true;
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description = ''
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Whether to delete the devices which are not configured via the
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[devices](#opt-services.syncthing.settings.devices) option.
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If set to `false`, devices added via the web
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interface will persist and will have to be deleted manually.
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'';
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};
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overrideFolders = mkOption {
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type = bool;
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default = true;
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description = ''
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Whether to delete the folders which are not configured via the
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[folders](#opt-services.syncthing.settings.folders) option.
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If set to `false`, folders added via the web
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interface will persist and will have to be deleted manually.
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'';
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};
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settings = mkOption {
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type = submodule {
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freeformType = settingsFormat.type;
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options = {
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# global options
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options = mkOption {
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default = { };
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description = ''
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The options element contains all other global configuration options
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'';
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type = submodule ({ name, ... }: {
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freeformType = settingsFormat.type;
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options = {
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localAnnounceEnabled = mkOption {
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type = nullOr bool;
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default = null;
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description = ''
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Whether to send announcements to the local LAN, also use such announcements to find other devices.
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'';
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};
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localAnnouncePort = mkOption {
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type = nullOr int;
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default = null;
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description = ''
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The port on which to listen and send IPv4 broadcast announcements to.
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'';
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};
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relaysEnabled = mkOption {
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type = nullOr bool;
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default = null;
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description = ''
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When true, relays will be connected to and potentially used for device to device connections.
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'';
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};
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urAccepted = mkOption {
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type = nullOr int;
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default = null;
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description = ''
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Whether the user has accepted to submit anonymous usage data.
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The default, 0, mean the user has not made a choice, and Syncthing will ask at some point in the future.
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"-1" means no, a number above zero means that that version of usage reporting has been accepted.
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'';
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};
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limitBandwidthInLan = mkOption {
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type = nullOr bool;
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default = null;
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description = ''
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Whether to apply bandwidth limits to devices in the same broadcast domain as the local device.
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'';
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};
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maxFolderConcurrency = mkOption {
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type = nullOr int;
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default = null;
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description = ''
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This option controls how many folders may concurrently be in I/O-intensive operations such as syncing or scanning.
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The mechanism is described in detail in a [separate chapter](https://docs.syncthing.net/advanced/option-max-concurrency.html).
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'';
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};
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};
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});
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};
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# device settings
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devices = mkOption {
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default = { };
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description = ''
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Peers/devices which Syncthing should communicate with.
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Note that you can still add devices manually, but those changes
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will be reverted on restart if [overrideDevices](#opt-services.syncthing.overrideDevices)
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is enabled.
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'';
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example = {
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bigbox = {
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id =
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"7CFNTQM-IMTJBHJ-3UWRDIU-ZGQJFR6-VCXZ3NB-XUH3KZO-N52ITXR-LAIYUAU";
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addresses = [ "tcp://192.168.0.10:51820" ];
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};
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};
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type = attrsOf (submodule ({ name, ... }: {
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freeformType = settingsFormat.type;
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options = {
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name = mkOption {
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type = str;
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default = name;
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description = ''
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The name of the device.
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'';
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};
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id = mkOption {
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type = str;
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description = ''
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The device ID. See <https://docs.syncthing.net/dev/device-ids.html>.
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'';
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};
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autoAcceptFolders = mkOption {
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type = bool;
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default = false;
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description = ''
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Automatically create or share folders that this device advertises at the default path.
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See <https://docs.syncthing.net/users/config.html?highlight=autoaccept#config-file-format>.
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'';
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};
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};
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}));
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};
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# folder settings
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folders = mkOption {
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default = { };
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description = ''
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Folders which should be shared by Syncthing.
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Note that you can still add folders manually, but those changes
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will be reverted on restart if [overrideFolders](#opt-services.syncthing.overrideFolders)
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is enabled.
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'';
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example = literalExpression ''
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{
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"/home/user/sync" = {
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id = "syncme";
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devices = [ "bigbox" ];
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};
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}
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'';
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type = attrsOf (submodule ({ name, ... }: {
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freeformType = settingsFormat.type;
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options = {
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enable = mkOption {
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type = bool;
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default = true;
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description = ''
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Whether to share this folder.
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This option is useful when you want to define all folders
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in one place, but not every machine should share all folders.
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'';
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};
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path = mkOption {
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type = str // {
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check = x:
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str.check x
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&& (substring 0 1 x == "/" || substring 0 2 x == "~/");
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description = str.description + " starting with / or ~/";
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};
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default = name;
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description = ''
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The path to the folder which should be shared.
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Only absolute paths (starting with `/`) and paths relative to
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the user's home directory (starting with `~/`) are allowed.
|
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'';
|
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};
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|
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id = mkOption {
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type = str;
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default = name;
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description = ''
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The ID of the folder. Must be the same on all devices.
|
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'';
|
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};
|
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|
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label = mkOption {
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type = str;
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default = name;
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description = ''
|
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The label of the folder.
|
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'';
|
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};
|
||
|
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type = mkOption {
|
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type = enum [
|
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"sendreceive"
|
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"sendonly"
|
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"receiveonly"
|
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"receiveencrypted"
|
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];
|
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default = "sendreceive";
|
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description = ''
|
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Controls how the folder is handled by Syncthing.
|
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See <https://docs.syncthing.net/users/config.html#config-option-folder.type>.
|
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'';
|
||
};
|
||
|
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devices = mkOption {
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type = listOf str;
|
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default = [ ];
|
||
description = ''
|
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The devices this folder should be shared with. Each device must
|
||
be defined in the [devices](#opt-services.syncthing.settings.devices) option.
|
||
'';
|
||
};
|
||
|
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versioning = mkOption {
|
||
default = null;
|
||
description = ''
|
||
How to keep changed/deleted files with Syncthing.
|
||
There are 4 different types of versioning with different parameters.
|
||
See <https://docs.syncthing.net/users/versioning.html>.
|
||
'';
|
||
example = literalExpression ''
|
||
[
|
||
{
|
||
versioning = {
|
||
type = "simple";
|
||
params.keep = "10";
|
||
};
|
||
}
|
||
{
|
||
versioning = {
|
||
type = "trashcan";
|
||
params.cleanoutDays = "1000";
|
||
};
|
||
}
|
||
{
|
||
versioning = {
|
||
type = "staggered";
|
||
fsPath = "/syncthing/backup";
|
||
params = {
|
||
cleanInterval = "3600";
|
||
maxAge = "31536000";
|
||
};
|
||
};
|
||
}
|
||
{
|
||
versioning = {
|
||
type = "external";
|
||
params.versionsPath = pkgs.writers.writeBash "backup" '''
|
||
folderpath="$1"
|
||
filepath="$2"
|
||
rm -rf "$folderpath/$filepath"
|
||
''';
|
||
};
|
||
}
|
||
]
|
||
'';
|
||
type = with types;
|
||
nullOr (submodule {
|
||
freeformType = settingsFormat.type;
|
||
options = {
|
||
type = mkOption {
|
||
type = enum [
|
||
"external"
|
||
"simple"
|
||
"staggered"
|
||
"trashcan"
|
||
];
|
||
description = ''
|
||
The type of versioning.
|
||
See <https://docs.syncthing.net/users/versioning.html>.
|
||
'';
|
||
};
|
||
};
|
||
});
|
||
};
|
||
|
||
copyOwnershipFromParent = mkOption {
|
||
type = bool;
|
||
default = false;
|
||
description = ''
|
||
On Unix systems, tries to copy file/folder ownership from
|
||
the parent directory (the directory it’s located in).
|
||
Requires running Syncthing as a privileged user, or
|
||
granting it additional capabilities (e.g. CAP_CHOWN on
|
||
Linux).
|
||
'';
|
||
};
|
||
};
|
||
}));
|
||
};
|
||
|
||
};
|
||
};
|
||
default = { };
|
||
description = ''
|
||
Extra configuration options for Syncthing.
|
||
See <https://docs.syncthing.net/users/config.html>.
|
||
Note that this attribute set does not exactly match the documented
|
||
XML format. Instead, this is the format of the JSON REST API. There
|
||
are slight differences. For example, this XML:
|
||
```xml
|
||
<options>
|
||
<listenAddress>default</listenAddress>
|
||
<minHomeDiskFree unit="%">1</minHomeDiskFree>
|
||
</options>
|
||
```
|
||
corresponds to the Nix code:
|
||
```nix
|
||
{
|
||
options = {
|
||
listenAddresses = [
|
||
"default"
|
||
];
|
||
minHomeDiskFree = {
|
||
unit = "%";
|
||
value = 1;
|
||
};
|
||
};
|
||
}
|
||
```
|
||
'';
|
||
example = {
|
||
options.localAnnounceEnabled = false;
|
||
gui.theme = "black";
|
||
};
|
||
};
|
||
|
||
guiAddress = mkOption {
|
||
type = str;
|
||
default = "127.0.0.1:8384";
|
||
description = ''
|
||
The address to serve the web interface at.
|
||
'';
|
||
};
|
||
|
||
allProxy = mkOption {
|
||
type = with types; nullOr str;
|
||
default = null;
|
||
example = "socks5://address.com:1234";
|
||
description = ''
|
||
Overwrites the {env}`all_proxy` environment variable for the Syncthing
|
||
process to the given value. This is normally used to let Syncthing
|
||
connect through a SOCKS5 proxy server. See
|
||
<https://docs.syncthing.net/users/proxying.html>.
|
||
'';
|
||
};
|
||
|
||
extraOptions = mkOption {
|
||
type = listOf str;
|
||
default = [ ];
|
||
example = [ "--reset-deltas" ];
|
||
description = ''
|
||
Extra command-line arguments to pass to {command}`syncthing`
|
||
'';
|
||
};
|
||
|
||
package = mkPackageOption pkgs "syncthing" { };
|
||
|
||
tray = mkOption {
|
||
type = with types;
|
||
either bool (submodule {
|
||
options = {
|
||
enable = mkOption {
|
||
type = bool;
|
||
default = false;
|
||
description = "Whether to enable a syncthing tray service.";
|
||
};
|
||
|
||
command = mkOption {
|
||
type = str;
|
||
default = "syncthingtray";
|
||
defaultText = literalExpression "syncthingtray";
|
||
example = literalExpression "qsyncthingtray";
|
||
description = "Syncthing tray command to use.";
|
||
};
|
||
|
||
package = mkOption {
|
||
type = package;
|
||
default = pkgs.syncthingtray-minimal;
|
||
defaultText = literalExpression "pkgs.syncthingtray-minimal";
|
||
example = literalExpression "pkgs.qsyncthingtray";
|
||
description = "Syncthing tray package to use.";
|
||
};
|
||
};
|
||
});
|
||
default = { enable = false; };
|
||
description = "Syncthing tray service configuration.";
|
||
};
|
||
};
|
||
};
|
||
|
||
config = mkMerge [
|
||
(mkIf cfg.enable {
|
||
home.packages = [ (getOutput "man" pkgs.syncthing) ];
|
||
|
||
systemd.user.services = {
|
||
syncthing = {
|
||
Unit = {
|
||
Description =
|
||
"Syncthing - Open Source Continuous File Synchronization";
|
||
Documentation = "man:syncthing(1)";
|
||
After = [ "network.target" ];
|
||
};
|
||
|
||
Service = {
|
||
ExecStartPre = mkIf (cfg.cert != null || cfg.key != null) "+${copyKeys}";
|
||
ExecStart = escapeShellArgs syncthingArgs;
|
||
Restart = "on-failure";
|
||
SuccessExitStatus = [ 3 4 ];
|
||
RestartForceExitStatus = [ 3 4 ];
|
||
Environment =
|
||
mkIf (cfg.allProxy != null) { all_proxy = cfg.allProxy; };
|
||
|
||
# Sandboxing.
|
||
LockPersonality = true;
|
||
MemoryDenyWriteExecute = true;
|
||
NoNewPrivileges = true;
|
||
PrivateUsers = true;
|
||
RestrictNamespaces = true;
|
||
SystemCallArchitectures = "native";
|
||
SystemCallFilter = "@system-service";
|
||
};
|
||
|
||
Install = { WantedBy = [ "default.target" ]; };
|
||
};
|
||
|
||
syncthing-init = mkIf (cleanedConfig != { }) {
|
||
Unit = {
|
||
Description = "Syncthing configuration updater";
|
||
Requires = [ "syncthing.service" ];
|
||
After = [ "syncthing.service" ];
|
||
};
|
||
|
||
Service = {
|
||
Type = "oneshot";
|
||
ExecStart = updateConfig;
|
||
RuntimeDirectory = "syncthing-init";
|
||
RemainAfterExit = true;
|
||
};
|
||
|
||
Install = { WantedBy = [ "default.target" ]; };
|
||
};
|
||
};
|
||
|
||
launchd.agents.syncthing = {
|
||
enable = true;
|
||
config = {
|
||
ProgramArguments = syncthingArgs;
|
||
KeepAlive = {
|
||
Crashed = true;
|
||
SuccessfulExit = false;
|
||
};
|
||
ProcessType = "Background";
|
||
};
|
||
};
|
||
})
|
||
|
||
(mkIf (isAttrs cfg.tray && cfg.tray.enable) {
|
||
assertions = [
|
||
(hm.assertions.assertPlatform "services.syncthing.tray" pkgs
|
||
platforms.linux)
|
||
];
|
||
|
||
systemd.user.services = {
|
||
${cfg.tray.package.pname} = {
|
||
Unit = {
|
||
Description = cfg.tray.package.pname;
|
||
Requires = [ "tray.target" ];
|
||
After = [ "graphical-session-pre.target" "tray.target" ];
|
||
PartOf = [ "graphical-session.target" ];
|
||
};
|
||
|
||
Service = {
|
||
ExecStart = "${cfg.tray.package}/bin/${cfg.tray.command}";
|
||
};
|
||
|
||
Install = { WantedBy = [ "graphical-session.target" ]; };
|
||
};
|
||
};
|
||
})
|
||
|
||
# deprecated
|
||
(mkIf (isBool cfg.tray && cfg.tray) {
|
||
assertions = [
|
||
(hm.assertions.assertPlatform "services.syncthing.tray" pkgs
|
||
platforms.linux)
|
||
];
|
||
|
||
systemd.user.services = {
|
||
"syncthingtray" = {
|
||
Unit = {
|
||
Description = "syncthingtray";
|
||
Requires = [ "tray.target" ];
|
||
After = [ "graphical-session-pre.target" "tray.target" ];
|
||
PartOf = [ "graphical-session.target" ];
|
||
};
|
||
|
||
Service = {
|
||
ExecStart = "${pkgs.syncthingtray-minimal}/bin/syncthingtray";
|
||
};
|
||
|
||
Install = { WantedBy = [ "graphical-session.target" ]; };
|
||
};
|
||
};
|
||
warnings = [
|
||
"Specifying 'services.syncthing.tray' as a boolean is deprecated, set 'services.syncthing.tray.enable' instead. See https://github.com/nix-community/home-manager/pull/1257."
|
||
];
|
||
})
|
||
];
|
||
}
|