344 lines
11 KiB
Nix
344 lines
11 KiB
Nix
{ config, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.mattermost;
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database = "postgres://${cfg.localDatabaseUser}:${cfg.localDatabasePassword}@localhost:5432/${cfg.localDatabaseName}?sslmode=disable&connect_timeout=10";
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postgresPackage = config.services.postgresql.package;
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createDb = {
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statePath ? cfg.statePath,
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localDatabaseUser ? cfg.localDatabaseUser,
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localDatabasePassword ? cfg.localDatabasePassword,
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localDatabaseName ? cfg.localDatabaseName,
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useSudo ? true
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}: ''
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if ! test -e ${escapeShellArg "${statePath}/.db-created"}; then
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${lib.optionalString useSudo "${pkgs.sudo}/bin/sudo -u ${escapeShellArg config.services.postgresql.superUser} \\"}
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${postgresPackage}/bin/psql postgres -c \
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"CREATE ROLE ${localDatabaseUser} WITH LOGIN NOCREATEDB NOCREATEROLE ENCRYPTED PASSWORD '${localDatabasePassword}'"
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${lib.optionalString useSudo "${pkgs.sudo}/bin/sudo -u ${escapeShellArg config.services.postgresql.superUser} \\"}
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${postgresPackage}/bin/createdb \
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--owner ${escapeShellArg localDatabaseUser} ${escapeShellArg localDatabaseName}
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touch ${escapeShellArg "${statePath}/.db-created"}
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fi
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'';
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mattermostPluginDerivations = with pkgs;
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map (plugin: stdenv.mkDerivation {
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name = "mattermost-plugin";
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installPhase = ''
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mkdir -p $out/share
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cp ${plugin} $out/share/plugin.tar.gz
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'';
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dontUnpack = true;
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dontPatch = true;
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dontConfigure = true;
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dontBuild = true;
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preferLocalBuild = true;
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}) cfg.plugins;
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mattermostPlugins = with pkgs;
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if mattermostPluginDerivations == [] then null
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else stdenv.mkDerivation {
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name = "${cfg.package.name}-plugins";
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nativeBuildInputs = [
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autoPatchelfHook
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] ++ mattermostPluginDerivations;
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buildInputs = [
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cfg.package
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];
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installPhase = ''
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mkdir -p $out/data/plugins
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plugins=(${escapeShellArgs (map (plugin: "${plugin}/share/plugin.tar.gz") mattermostPluginDerivations)})
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for plugin in "''${plugins[@]}"; do
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hash="$(sha256sum "$plugin" | cut -d' ' -f1)"
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mkdir -p "$hash"
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tar -C "$hash" -xzf "$plugin"
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autoPatchelf "$hash"
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GZIP_OPT=-9 tar -C "$hash" -cvzf "$out/data/plugins/$hash.tar.gz" .
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rm -rf "$hash"
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done
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'';
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dontUnpack = true;
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dontPatch = true;
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dontConfigure = true;
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dontBuild = true;
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preferLocalBuild = true;
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};
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mattermostConfWithoutPlugins = recursiveUpdate
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{ ServiceSettings.SiteURL = cfg.siteUrl;
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ServiceSettings.ListenAddress = cfg.listenAddress;
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TeamSettings.SiteName = cfg.siteName;
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SqlSettings.DriverName = "postgres";
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SqlSettings.DataSource = database;
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PluginSettings.Directory = "${cfg.statePath}/plugins/server";
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PluginSettings.ClientDirectory = "${cfg.statePath}/plugins/client";
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}
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cfg.extraConfig;
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mattermostConf = recursiveUpdate
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mattermostConfWithoutPlugins
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(
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if mattermostPlugins == null then {}
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else {
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PluginSettings = {
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Enable = true;
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};
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}
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);
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mattermostConfJSON = pkgs.writeText "mattermost-config.json" (builtins.toJSON mattermostConf);
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in
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{
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options = {
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services.mattermost = {
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enable = mkEnableOption "Mattermost chat server";
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package = mkOption {
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type = types.package;
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default = pkgs.mattermost;
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defaultText = "pkgs.mattermost";
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description = "Mattermost derivation to use.";
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};
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statePath = mkOption {
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type = types.str;
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default = "/var/lib/mattermost";
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description = "Mattermost working directory";
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};
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siteUrl = mkOption {
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type = types.str;
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example = "https://chat.example.com";
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description = ''
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URL this Mattermost instance is reachable under, without trailing slash.
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'';
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};
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siteName = mkOption {
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type = types.str;
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default = "Mattermost";
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description = "Name of this Mattermost site.";
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};
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listenAddress = mkOption {
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type = types.str;
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default = ":8065";
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example = "[::1]:8065";
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description = ''
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Address and port this Mattermost instance listens to.
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'';
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};
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mutableConfig = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether the Mattermost config.json is writeable by Mattermost.
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Most of the settings can be edited in the system console of
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Mattermost if this option is enabled. A template config using
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the options specified in services.mattermost will be generated
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but won't be overwritten on changes or rebuilds.
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If this option is disabled, changes in the system console won't
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be possible (default). If an config.json is present, it will be
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overwritten!
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'';
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};
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preferNixConfig = mkOption {
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type = types.bool;
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default = false;
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description = ''
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If both mutableConfig and this option are set, the Nix configuration
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will take precedence over any settings configured in the server
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console.
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'';
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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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Addtional configuration options as Nix attribute set in config.json schema.
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'';
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};
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plugins = mkOption {
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type = types.listOf (types.oneOf [types.path types.package]);
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default = [];
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example = "[ ./com.github.moussetc.mattermost.plugin.giphy-2.0.0.tar.gz ]";
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description = ''
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Plugins to add to the configuration. Overrides any installed if non-null.
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This is a list of paths to .tar.gz files or derivations evaluating to
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.tar.gz files.
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'';
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};
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localDatabaseCreate = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Create a local PostgreSQL database for Mattermost automatically.
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'';
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};
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localDatabaseName = mkOption {
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type = types.str;
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default = "mattermost";
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description = ''
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Local Mattermost database name.
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'';
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};
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localDatabaseUser = mkOption {
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type = types.str;
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default = "mattermost";
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description = ''
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Local Mattermost database username.
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'';
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};
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localDatabasePassword = mkOption {
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type = types.str;
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default = "mmpgsecret";
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description = ''
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Password for local Mattermost database user.
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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 = "mattermost";
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description = ''
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User which runs the Mattermost service.
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'';
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};
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group = mkOption {
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type = types.str;
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default = "mattermost";
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description = ''
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Group which runs the Mattermost service.
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'';
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};
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matterircd = {
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enable = mkEnableOption "Mattermost IRC bridge";
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package = mkOption {
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type = types.package;
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default = pkgs.matterircd;
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defaultText = "pkgs.matterircd";
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description = "matterircd derivation to use.";
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};
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parameters = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "-mmserver chat.example.com" "-bind [::]:6667" ];
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description = ''
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Set commandline parameters to pass to matterircd. See
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https://github.com/42wim/matterircd#usage for more information.
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'';
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};
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};
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};
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};
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config = mkMerge [
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(mkIf cfg.enable {
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users.users = optionalAttrs (cfg.user == "mattermost") {
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mattermost = {
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group = cfg.group;
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uid = config.ids.uids.mattermost;
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home = cfg.statePath;
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};
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};
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users.groups = optionalAttrs (cfg.group == "mattermost") {
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mattermost.gid = config.ids.gids.mattermost;
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};
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services.postgresql.enable = cfg.localDatabaseCreate;
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# The systemd service will fail to execute the preStart hook
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# if the WorkingDirectory does not exist
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system.activationScripts.mattermost = ''
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mkdir -p "${cfg.statePath}"
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'';
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systemd.services.mattermost = {
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description = "Mattermost chat service";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" "postgresql.service" ];
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preStart = ''
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mkdir -p "${cfg.statePath}"/{data,config,logs,plugins}
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mkdir -p "${cfg.statePath}/plugins"/{client,server}
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ln -sf ${cfg.package}/{bin,fonts,i18n,templates,client} "${cfg.statePath}"
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'' + lib.optionalString (mattermostPlugins != null) ''
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rm -rf "${cfg.statePath}/data/plugins"
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ln -sf ${mattermostPlugins}/data/plugins "${cfg.statePath}/data"
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'' + lib.optionalString (!cfg.mutableConfig) ''
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rm -f "${cfg.statePath}/config/config.json"
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${pkgs.jq}/bin/jq -s '.[0] * .[1]' ${cfg.package}/config/config.json ${mattermostConfJSON} > "${cfg.statePath}/config/config.json"
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'' + lib.optionalString cfg.mutableConfig ''
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if ! test -e "${cfg.statePath}/config/.initial-created"; then
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rm -f ${cfg.statePath}/config/config.json
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${pkgs.jq}/bin/jq -s '.[0] * .[1]' ${cfg.package}/config/config.json ${mattermostConfJSON} > "${cfg.statePath}/config/config.json"
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touch "${cfg.statePath}/config/.initial-created"
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fi
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'' + lib.optionalString (cfg.mutableConfig && cfg.preferNixConfig) ''
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new_config="$(${pkgs.jq}/bin/jq -s '.[0] * .[1]' "${cfg.statePath}/config/config.json" ${mattermostConfJSON})"
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rm -f "${cfg.statePath}/config/config.json"
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echo "$new_config" > "${cfg.statePath}/config/config.json"
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'' + lib.optionalString cfg.localDatabaseCreate (createDb {}) + ''
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# Don't change permissions recursively on the data, current, and symlinked directories (see ln -sf command above).
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# This dramatically decreases startup times for installations with a lot of files.
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find . -maxdepth 1 -not -name data -not -name client -not -name templates -not -name i18n -not -name fonts -not -name bin -not -name . \
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-exec chown "${cfg.user}:${cfg.group}" -R {} \; -exec chmod u+rw,g+r,o-rwx -R {} \;
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chown "${cfg.user}:${cfg.group}" "${cfg.statePath}/data" .
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chmod u+rw,g+r,o-rwx "${cfg.statePath}/data" .
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'';
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serviceConfig = {
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PermissionsStartOnly = true;
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User = cfg.user;
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Group = cfg.group;
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ExecStart = "${cfg.package}/bin/mattermost";
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WorkingDirectory = "${cfg.statePath}";
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Restart = "always";
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RestartSec = "10";
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LimitNOFILE = "49152";
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};
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unitConfig.JoinsNamespaceOf = mkIf cfg.localDatabaseCreate "postgresql.service";
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};
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})
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(mkIf cfg.matterircd.enable {
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systemd.services.matterircd = {
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description = "Mattermost IRC bridge service";
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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User = "nobody";
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Group = "nogroup";
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ExecStart = "${cfg.matterircd.package}/bin/matterircd ${escapeShellArgs cfg.matterircd.parameters}";
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WorkingDirectory = "/tmp";
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PrivateTmp = true;
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Restart = "always";
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RestartSec = "5";
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};
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};
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})
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];
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}
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