326 lines
9.6 KiB
Nix
326 lines
9.6 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.nitter;
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configFile = pkgs.writeText "nitter.conf" ''
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${generators.toINI {
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# String values need to be quoted
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mkKeyValue = generators.mkKeyValueDefault {
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mkValueString = v:
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if isString v then "\"" + (strings.escape ["\""] (toString v)) + "\""
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else generators.mkValueStringDefault {} v;
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} " = ";
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} (lib.recursiveUpdate {
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Server = cfg.server;
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Cache = cfg.cache;
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Config = cfg.config // { hmacKey = "@hmac@"; };
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Preferences = cfg.preferences;
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} cfg.settings)}
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'';
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# `hmac` is a secret used for cryptographic signing of video URLs.
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# Generate it on first launch, then copy configuration and replace
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# `@hmac@` with this value.
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# We are not using sed as it would leak the value in the command line.
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preStart = pkgs.writers.writePython3 "nitter-prestart" {} ''
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import os
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import secrets
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state_dir = os.environ.get("STATE_DIRECTORY")
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if not os.path.isfile(f"{state_dir}/hmac"):
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# Generate hmac on first launch
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hmac = secrets.token_hex(32)
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with open(f"{state_dir}/hmac", "w") as f:
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f.write(hmac)
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else:
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# Load previously generated hmac
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with open(f"{state_dir}/hmac", "r") as f:
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hmac = f.read()
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configFile = "${configFile}"
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with open(configFile, "r") as f_in:
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with open(f"{state_dir}/nitter.conf", "w") as f_out:
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f_out.write(f_in.read().replace("@hmac@", hmac))
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'';
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in
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{
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options = {
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services.nitter = {
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enable = mkEnableOption "If enabled, start Nitter.";
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server = {
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address = mkOption {
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type = types.str;
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default = "0.0.0.0";
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example = "127.0.0.1";
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description = "The address to listen on.";
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};
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port = mkOption {
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type = types.port;
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default = 8080;
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example = 8000;
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description = "The port to listen on.";
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};
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https = mkOption {
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type = types.bool;
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default = false;
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description = "Set secure attribute on cookies. Keep it disabled to enable cookies when not using HTTPS.";
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};
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httpMaxConnections = mkOption {
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type = types.int;
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default = 100;
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description = "Maximum number of HTTP connections.";
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};
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staticDir = mkOption {
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type = types.path;
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default = "${pkgs.nitter}/share/nitter/public";
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defaultText = "\${pkgs.nitter}/share/nitter/public";
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description = "Path to the static files directory.";
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};
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title = mkOption {
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type = types.str;
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default = "nitter";
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description = "Title of the instance.";
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};
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hostname = mkOption {
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type = types.str;
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default = "localhost";
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example = "nitter.net";
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description = "Hostname of the instance.";
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};
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};
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cache = {
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listMinutes = mkOption {
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type = types.int;
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default = 240;
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description = "How long to cache list info (not the tweets, so keep it high).";
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};
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rssMinutes = mkOption {
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type = types.int;
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default = 10;
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description = "How long to cache RSS queries.";
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};
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redisHost = mkOption {
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type = types.str;
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default = "localhost";
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description = "Redis host.";
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};
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redisPort = mkOption {
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type = types.port;
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default = 6379;
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description = "Redis port.";
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};
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redisConnections = mkOption {
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type = types.int;
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default = 20;
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description = "Redis connection pool size.";
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};
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redisMaxConnections = mkOption {
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type = types.int;
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default = 30;
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description = ''
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Maximum number of connections to Redis.
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New connections are opened when none are available, but if the
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pool size goes above this, they are closed when released, do not
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worry about this unless you receive tons of requests per second.
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'';
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};
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};
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config = {
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base64Media = mkOption {
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type = types.bool;
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default = false;
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description = "Use base64 encoding for proxied media URLs.";
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};
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tokenCount = mkOption {
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type = types.int;
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default = 10;
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description = ''
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Minimum amount of usable tokens.
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Tokens are used to authorize API requests, but they expire after
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~1 hour, and have a limit of 187 requests. The limit gets reset
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every 15 minutes, and the pool is filled up so there is always at
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least tokenCount usable tokens. Only increase this if you receive
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major bursts all the time.
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'';
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};
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};
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preferences = {
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replaceTwitter = mkOption {
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type = types.str;
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default = "";
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example = "nitter.net";
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description = "Replace Twitter links with links to this instance (blank to disable).";
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};
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replaceYouTube = mkOption {
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type = types.str;
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default = "";
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example = "piped.kavin.rocks";
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description = "Replace YouTube links with links to this instance (blank to disable).";
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};
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replaceInstagram = mkOption {
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type = types.str;
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default = "";
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description = "Replace Instagram links with links to this instance (blank to disable).";
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};
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mp4Playback = mkOption {
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type = types.bool;
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default = true;
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description = "Enable MP4 video playback.";
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};
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hlsPlayback = mkOption {
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type = types.bool;
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default = false;
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description = "Enable HLS video streaming (requires JavaScript).";
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};
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proxyVideos = mkOption {
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type = types.bool;
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default = true;
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description = "Proxy video streaming through the server (might be slow).";
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};
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muteVideos = mkOption {
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type = types.bool;
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default = false;
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description = "Mute videos by default.";
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};
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autoplayGifs = mkOption {
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type = types.bool;
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default = true;
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description = "Autoplay GIFs.";
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};
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theme = mkOption {
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type = types.str;
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default = "Nitter";
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description = "Instance theme.";
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};
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infiniteScroll = mkOption {
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type = types.bool;
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default = false;
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description = "Infinite scrolling (requires JavaScript, experimental!).";
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};
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stickyProfile = mkOption {
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type = types.bool;
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default = true;
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description = "Make profile sidebar stick to top.";
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};
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bidiSupport = mkOption {
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type = types.bool;
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default = false;
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description = "Support bidirectional text (makes clicking on tweets harder).";
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};
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hideTweetStats = mkOption {
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type = types.bool;
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default = false;
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description = "Hide tweet stats (replies, retweets, likes).";
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};
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hideBanner = mkOption {
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type = types.bool;
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default = false;
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description = "Hide profile banner.";
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};
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hidePins = mkOption {
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type = types.bool;
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default = false;
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description = "Hide pinned tweets.";
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};
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hideReplies = mkOption {
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type = types.bool;
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default = false;
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description = "Hide tweet replies.";
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};
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};
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settings = mkOption {
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type = types.attrs;
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default = {};
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description = ''
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Add settings here to override NixOS module generated settings.
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Check the official repository for the available settings:
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https://github.com/zedeus/nitter/blob/master/nitter.conf
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'';
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};
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redisCreateLocally = mkOption {
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type = types.bool;
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default = true;
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description = "Configure local Redis server for Nitter.";
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};
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openFirewall = mkOption {
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type = types.bool;
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default = false;
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description = "Open ports in the firewall for Nitter web interface.";
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};
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};
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};
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config = mkIf cfg.enable {
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assertions = [
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{
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assertion = !cfg.redisCreateLocally || (cfg.cache.redisHost == "localhost" && cfg.cache.redisPort == 6379);
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message = "When services.nitter.redisCreateLocally is enabled, you need to use localhost:6379 as a cache server.";
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}
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];
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systemd.services.nitter = {
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description = "Nitter (An alternative Twitter front-end)";
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wantedBy = [ "multi-user.target" ];
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after = [ "syslog.target" "network.target" ];
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serviceConfig = {
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DynamicUser = true;
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StateDirectory = "nitter";
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Environment = [ "NITTER_CONF_FILE=/var/lib/nitter/nitter.conf" ];
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# Some parts of Nitter expect `public` folder in working directory,
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# see https://github.com/zedeus/nitter/issues/414
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WorkingDirectory = "${pkgs.nitter}/share/nitter";
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ExecStart = "${pkgs.nitter}/bin/nitter";
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ExecStartPre = "${preStart}";
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AmbientCapabilities = lib.mkIf (cfg.server.port < 1024) [ "CAP_NET_BIND_SERVICE" ];
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Restart = "on-failure";
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RestartSec = "5s";
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};
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};
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services.redis = lib.mkIf (cfg.redisCreateLocally) {
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enable = true;
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};
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networking.firewall = mkIf cfg.openFirewall {
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allowedTCPPorts = [ cfg.server.port ];
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};
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};
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}
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