186 lines
5.3 KiB
Nix
186 lines
5.3 KiB
Nix
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{ config, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.paperless;
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defaultUser = "paperless";
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manage = cfg.package.withConfig {
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config = {
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PAPERLESS_CONSUMPTION_DIR = cfg.consumptionDir;
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PAPERLESS_INLINE_DOC = "true";
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PAPERLESS_DISABLE_LOGIN = "true";
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} // cfg.extraConfig;
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inherit (cfg) dataDir ocrLanguages;
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paperlessPkg = cfg.package;
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};
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in
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{
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options.services.paperless = {
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enable = mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Enable Paperless.
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When started, the Paperless database is automatically created if it doesn't
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exist and updated if the Paperless package has changed.
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Both tasks are achieved by running a Django migration.
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'';
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};
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dataDir = mkOption {
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type = types.str;
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default = "/var/lib/paperless";
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description = "Directory to store the Paperless data.";
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};
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consumptionDir = mkOption {
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type = types.str;
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default = "${cfg.dataDir}/consume";
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defaultText = "\${dataDir}/consume";
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description = "Directory from which new documents are imported.";
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};
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consumptionDirIsPublic = mkOption {
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type = types.bool;
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default = false;
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description = "Whether all users can write to the consumption dir.";
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};
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ocrLanguages = mkOption {
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type = with types; nullOr (listOf string);
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default = null;
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description = ''
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Languages available for OCR via Tesseract, specified as
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<literal>ISO 639-2/T</literal> language codes.
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If unset, defaults to all available languages.
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'';
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example = [ "eng" "spa" "jpn" ];
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};
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address = mkOption {
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type = types.str;
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default = "localhost";
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description = "Server listening address.";
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};
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port = mkOption {
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type = types.int;
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default = 28981;
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description = "Server port to listen on.";
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};
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extraConfig = mkOption {
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type = types.attrs;
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default = {};
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description = ''
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Extra paperless config options.
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The config values are evaluated as double-quoted Bash string literals.
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See <literal>paperless-src/paperless.conf.example</literal> for available options.
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To enable user authentication, set <literal>PAPERLESS_DISABLE_LOGIN = "false"</literal>
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and run the shell command <literal>$dataDir/paperless-manage createsuperuser</literal>.
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To define secret options without storing them in /nix/store, use the following pattern:
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<literal>PAPERLESS_PASSPHRASE = "$(< /etc/my_passphrase_file)"</literal>
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'';
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example = literalExample ''
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{
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PAPERLESS_OCR_LANGUAGE = "deu";
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}
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'';
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};
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user = mkOption {
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type = types.str;
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default = defaultUser;
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description = "User under which Paperless runs.";
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};
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package = mkOption {
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type = types.package;
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default = pkgs.paperless;
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defaultText = "pkgs.paperless";
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description = "The Paperless package to use.";
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};
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manage = mkOption {
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type = types.package;
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readOnly = true;
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default = manage;
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description = ''
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A script to manage the Paperless instance.
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It wraps Django's manage.py and is also available at
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<literal>$dataDir/manage-paperless</literal>
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'';
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};
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};
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config = mkIf cfg.enable {
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systemd.tmpfiles.rules = [
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"d '${cfg.dataDir}' - ${cfg.user} ${cfg.user} - -"
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] ++ (optional cfg.consumptionDirIsPublic
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"d '${cfg.consumptionDir}' 777 ${cfg.user} ${cfg.user} - -"
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# If the consumption dir is not created here, it's automatically created by
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# 'manage' with the default permissions.
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);
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systemd.services.paperless-consumer = {
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description = "Paperless document consumer";
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serviceConfig = {
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User = cfg.user;
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ExecStart = "${manage} document_consumer";
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Restart = "always";
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};
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after = [ "systemd-tmpfiles-setup.service" ];
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wantedBy = [ "multi-user.target" ];
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preStart = ''
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if [[ $(readlink ${cfg.dataDir}/paperless-manage) != ${manage} ]]; then
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ln -sf ${manage} ${cfg.dataDir}/paperless-manage
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fi
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${manage.setupEnv}
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# Auto-migrate on first run or if the package has changed
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versionFile="$PAPERLESS_DBDIR/src-version"
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if [[ $(cat "$versionFile" 2>/dev/null) != ${cfg.package} ]]; then
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python $paperlessSrc/manage.py migrate
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echo ${cfg.package} > "$versionFile"
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fi
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'';
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};
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systemd.services.paperless-server = {
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description = "Paperless document server";
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serviceConfig = {
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User = cfg.user;
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ExecStart = "${manage} runserver --noreload ${cfg.address}:${toString cfg.port}";
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Restart = "always";
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};
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# Bind to `paperless-consumer` so that the server never runs
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# during migrations
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bindsTo = [ "paperless-consumer.service" ];
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after = [ "paperless-consumer.service" ];
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wantedBy = [ "multi-user.target" ];
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};
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users = optionalAttrs (cfg.user == defaultUser) {
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users = [{
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name = defaultUser;
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group = defaultUser;
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uid = config.ids.uids.paperless;
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home = cfg.dataDir;
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}];
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groups = [{
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name = defaultUser;
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gid = config.ids.gids.paperless;
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}];
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};
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};
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}
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