stockholm/lass/2configs/radio.nix

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{ config, pkgs, ... }:
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with pkgs.stockholm.lib;
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let
name = "radio";
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music_dir = "/home/radio/music";
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add_random = pkgs.writeDashBin "add_random" ''
${pkgs.mpc_cli}/bin/mpc add "$(${pkgs.findutils}/bin/find "${music_dir}/the_playlist" \
| grep -Ev '/other/|/.graveyard/' \
| grep '\.ogg$' \
| shuf -n1 \
| sed 's,${music_dir}/,,' \
)"
'';
get_current_track_position = pkgs.writeDash "get_current_track_position" ''
${pkgs.mpc_cli}/bin/mpc status | ${pkgs.gawk}/bin/awk '/^\[playing\]/ { sub(/\/.+/,"",$3); split($3,a,/:/); print a[1]*60+a[2] }'
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'';
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skip_track = pkgs.writeBashBin "skip_track" ''
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set -eu
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${add_random}/bin/add_random
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music_dir=${escapeShellArg music_dir}
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current_track=$(${pkgs.mpc_cli}/bin/mpc current -f %file%)
track_infos=$(${print_current}/bin/print_current)
skip_count=$(${pkgs.attr}/bin/getfattr -n user.skip_count --only-values "$music_dir"/"$current_track" || echo 0)
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if [[ "$current_track" =~ ^the_playlist/music/.* ]] && [ "$skip_count" -le 2 ]; then
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skip_count=$((skip_count+1))
${pkgs.attr}/bin/setfattr -n user.skip_count -v "$skip_count" "$music_dir"/"$current_track"
echo skipping: "$track_infos" skip_count: "$skip_count"
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else
mkdir -p "$music_dir"/the_playlist/.graveyard/
mv "$music_dir"/"$current_track" "$music_dir"/the_playlist/.graveyard/
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echo killing: "$track_infos"
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fi
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${pkgs.mpc_cli}/bin/mpc -q next
'';
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good_track = pkgs.writeBashBin "good_track" ''
set -eu
music_dir=${escapeShellArg music_dir}
current_track=$(${pkgs.mpc_cli}/bin/mpc current -f %file%)
track_infos=$(${print_current}/bin/print_current)
if [[ "$current_track" =~ ^the_playlist/music/.* ]]; then
${pkgs.attr}/bin/setfattr -n user.skip_count -v 0 "$music_dir"/"$current_track"
else
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mv "$music_dir"/"$current_track" "$music_dir"/the_playlist/music/ || :
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fi
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echo good: "$track_infos"
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'';
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track_youtube_link = pkgs.writeDash "track_youtube_link" ''
${pkgs.mpc_cli}/bin/mpc current -f %file% \
| ${pkgs.gnused}/bin/sed 's@.*\(.\{11\}\)\.ogg@https://www.youtube.com/watch?v=\1@'
'';
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print_current = pkgs.writeDashBin "print_current" ''
echo "$(${pkgs.mpc_cli}/bin/mpc current -f %file%) \
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$(${track_youtube_link})"
'';
print_current_json = pkgs.writeDashBin "print_current_json" ''
${pkgs.jq}/bin/jq -n -c \
--arg name "$(${pkgs.mpc_cli}/bin/mpc current)" \
--arg artist "$(${pkgs.mpc_cli}/bin/mpc current -f %artist%)" \
--arg title "$(${pkgs.mpc_cli}/bin/mpc current -f %title%)" \
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--arg filename "$(${pkgs.mpc_cli}/bin/mpc current -f %file%)" \
--arg position "$(${get_current_track_position})" \
--arg length "$(${pkgs.mpc_cli}/bin/mpc current -f %time%)" \
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--arg youtube "$(${track_youtube_link})" '{
name: $name,
artist: $artist,
title: $title,
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filename: $filename,
position: $position,
length: $length,
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youtube: $youtube
}'
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'';
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set_irc_topic = pkgs.writeDash "set_irc_topic" ''
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${pkgs.curl}/bin/curl -fsS --unix-socket /home/radio/reaktor.sock http://z/ \
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-H content-type:application/json \
-d "$(${pkgs.jq}/bin/jq -n \
--arg text "$1" '{
command:"TOPIC",
params:["#the_playlist",$text]
}'
)"
'';
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write_to_irc = pkgs.writeDash "write_to_irc" ''
${pkgs.curl}/bin/curl -fsSv --unix-socket /home/radio/reaktor.sock http://z/ \
-H content-type:application/json \
-d "$(${pkgs.jq}/bin/jq -n \
--arg text "$1" '{
command:"PRIVMSG",
params:["#the_playlist",$text]
}'
)"
'';
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in {
users.users = {
"${name}" = rec {
inherit name;
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createHome = mkForce false;
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group = name;
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uid = genid_uint31 name;
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description = "radio manager";
home = "/home/${name}";
useDefaultShell = true;
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openssh.authorizedKeys.keys = with config.krebs.users; [
lass.pubkey
lass-mors.pubkey
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];
};
};
users.groups = {
"radio" = {};
};
krebs.per-user.${name}.packages = with pkgs; [
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add_random
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good_track
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skip_track
print_current
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print_current_json
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ncmpcpp
mpc_cli
];
services.mpd = {
enable = true;
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user = "radio";
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musicDirectory = "${music_dir}";
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dataDir = "/home/radio/state"; # TODO create this somwhere
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extraConfig = ''
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log_level "default"
auto_update "yes"
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volume_normalization "yes"
audio_output {
type "httpd"
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name "raw radio"
encoder "wave"
port "7900"
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format "44100:16:2"
always_on "yes" # prevent MPD from disconnecting all listeners when playback is stopped.
tags "yes" # httpd supports sending tags to listening streams.
}
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'';
};
services.liquidsoap.streams.radio-news = pkgs.writeText "radio-news.liq" ''
source = mksafe(input.http("http://localhost:7900/raw.wave"))
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output.icecast(mount = '/music.ogg', password = 'hackme', %vorbis(quality = 1), source)
output.icecast(mount = '/music.mp3', password = 'hackme', %mp3.vbr(), source)
output.icecast(mount = '/music.opus', password = 'hackme', %opus(), source)
extra_input = audio_to_stereo(input.harbor("live", port=1338))
o = smooth_add(normal = source, special = extra_input)
output.icecast(mount = '/radio.ogg', password = 'hackme', %vorbis(quality = 1), o)
output.icecast(mount = '/radio.mp3', password = 'hackme', %mp3.vbr(), o)
output.icecast(mount = '/radio.opus', password = 'hackme', %opus(), o)
'';
services.icecast = {
enable = true;
hostname = "radio.lassul.us";
admin.password = "hackme";
extraConf = ''
<authentication>
<source-password>hackme</source-password>
</authentication>
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'';
};
krebs.iptables = {
tables = {
filter.INPUT.rules = [
{ predicate = "-p tcp --dport 8000"; target = "ACCEPT"; }
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{ predicate = "-i retiolum -p tcp --dport 8001"; target = "ACCEPT"; }
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];
};
};
systemd.timers.radio = {
description = "radio autoadder timer";
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = "*:0/1";
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};
};
systemd.services.radio = let
autoAdd = pkgs.writeDash "autoAdd" ''
LIMIT=$1 #in seconds
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timeLeft () {
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playlistDuration=$(${pkgs.mpc_cli}/bin/mpc --format '%time%' playlist | ${pkgs.gawk}/bin/awk -F ':' 'BEGIN{t=0} {t+=$1*60+$2} END{print t}')
currentTime=$(${get_current_track_position})
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expr ''${playlistDuration:-0} - ''${currentTime:-0}
}
if test $(timeLeft) -le $LIMIT; then
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${add_random}/bin/add_random
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fi
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${pkgs.mpc_cli}/bin/mpc play > /dev/null
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'';
in {
description = "radio playlist autoadder";
after = [ "network.target" ];
restartIfChanged = true;
serviceConfig = {
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ExecStart = "${autoAdd} 150";
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};
};
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systemd.services.radio-recent = let
recentlyPlayed = pkgs.writeDash "recentlyPlayed" ''
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set -xeu
LIMIT=1000 #how many tracks to keep in the history
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HISTORY_FILE=/var/lib/radio/recent
while :; do
${pkgs.mpc_cli}/bin/mpc idle player > /dev/null
${pkgs.mpc_cli}/bin/mpc current -f %file%
done | while read track; do
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listeners=$(${pkgs.curl}/bin/curl lassul.us:8000/status-json.xsl |
${pkgs.jq}/bin/jq '[.icestats.source[].listeners] | add')
echo "$(date -Is)" "$track" | tee -a "$HISTORY_FILE"
echo "$(tail -$LIMIT "$HISTORY_FILE")" > "$HISTORY_FILE"
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${set_irc_topic} "playing: $track listeners: $listeners"
done
'';
in {
description = "radio recently played";
after = [ "mpd.service" "network.target" ];
wantedBy = [ "multi-user.target" ];
restartIfChanged = true;
serviceConfig = {
ExecStart = recentlyPlayed;
User = "radio";
};
};
# allow reaktor2 to modify files
systemd.services."reaktor2-the_playlist".serviceConfig.DynamicUser = mkForce false;
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krebs.reaktor2.the_playlist = {
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hostname = "irc.hackint.org";
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port = "6697";
useTLS = true;
nick = "the_playlist";
username = "radio";
API.listen = "unix:/home/radio/reaktor.sock";
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plugins = [
{
plugin = "register";
config = {
channels = [
"#the_playlist"
"#krebs"
];
};
}
{
plugin = "system";
config = {
workdir = config.krebs.reaktor2.the_playlist.stateDir;
hooks.PRIVMSG = [
{
activate = "match";
pattern = "^(?:.*\\s)?\\s*the_playlist:\\s*([0-9A-Za-z._][0-9A-Za-z._-]*)(?:\\s+(.*\\S))?\\s*$";
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command = 1;
arguments = [2];
commands = {
skip.filename = "${skip_track}/bin/skip_track";
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next.filename = "${skip_track}/bin/skip_track";
bad.filename = "${skip_track}/bin/skip_track";
good.filename = "${good_track}/bin/good_track";
nice.filename = "${good_track}/bin/good_track";
like.filename = "${good_track}/bin/good_track";
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current.filename = "${print_current}/bin/print_current";
suggest.filename = pkgs.writeDash "suggest" ''
echo "$@" >> playlist_suggest
'';
};
}
];
};
}
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];
};
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krebs.htgen.radio = {
port = 8001;
user = {
name = "radio";
};
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script = ''. ${pkgs.writeDash "radio" ''
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case "$Method $Request_URI" in
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"GET /current")
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printf 'HTTP/1.1 200 OK\r\n'
printf 'Connection: close\r\n'
printf '\r\n'
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${print_current_json}/bin/print_current_json
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exit
;;
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"POST /skip")
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printf 'HTTP/1.1 200 OK\r\n'
printf 'Connection: close\r\n'
printf '\r\n'
msg=$(${skip_track}/bin/skip_track)
${write_to_irc} "$msg"
echo "$msg"
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exit
;;
"POST /good")
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printf 'HTTP/1.1 200 OK\r\n'
printf 'Connection: close\r\n'
printf '\r\n'
msg=$(${good_track}/bin/good_track)
${write_to_irc} "$msg"
echo "$msg"
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exit
;;
esac
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''}'';
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};
services.nginx = {
enable = true;
virtualHosts."radio.lassul.us" = {
forceSSL = true;
enableACME = true;
locations."/".extraConfig = ''
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proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://localhost:8000;
'';
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locations."= /recent".extraConfig = ''
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default_type "text/plain";
alias /var/lib/radio/recent;
'';
locations."= /current".extraConfig = ''
proxy_pass http://localhost:8001;
'';
locations."= /skip".extraConfig = ''
proxy_pass http://localhost:8001;
'';
locations."= /good".extraConfig = ''
proxy_pass http://localhost:8001;
'';
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locations."= /controls".extraConfig = ''
default_type "text/html";
alias ${pkgs.writeText "controls.html" ''
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>The_Playlist Voting!</title>
<style>
#good {
display: block;
width: 100%;
border: none;
background-color: #04AA6D;
padding: 14px;
margin: 14px 0 0 0;
height: 100px;
font-size: 16px;
cursor: pointer;
text-align: center;
}
#bad {
display: block;
width: 100%;
border: none;
background-color: red;
padding: 14px;
height: 100px;
margin: 14px 0 0 0;
font-size: 16px;
cursor: pointer;
text-align: center;
}
</style>
</head>
<body>
<div id=votenote></div>
<button id=good type="button"> GUT </button>
<button id=bad type="button"> SCHLECHT </button>
<center>
Currently Running: <br/><div>
<b id=current></b>
</div>
<div id=vote>
</div>
<audio controls autoplay="autoplay">
<source src="https://radio.lassul.us/radio.ogg" type="audio/ogg">
Your browser does not support the audio element.
</audio>
</center>
<script>
document.getElementById("good").onclick=async ()=>{
let result = await fetch("https://radio.lassul.us/good", {"method": "POST"})
document.getElementById("vote").textContent = "Dieses Lied findest du gut"
};
document.getElementById("bad").onclick=async ()=>{
let result = await fetch("https://radio.lassul.us/skip", {"method": "POST"})
document.getElementById("vote").textContent = "Dieses Lied findest du schlecht"
};
async function current() {
let result = await fetch("https://radio.lassul.us/current", {"method": "GET"})
let data = await result.json()
document.getElementById("current").textContent = data.name
}
window.onload = function() {
window.setInterval('current()', 10000)
current()
}
</script>
</body>
</html>
''};
'';
extraConfig = ''
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
'';
};
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virtualHosts."lassul.us".locations."= /the_playlist".extraConfig = let
html = pkgs.writeText "index.html" ''
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>lassulus playlist</title>
</head>
<body>
<div style="display:inline-block;margin:0px;padding:0px;overflow:hidden">
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<iframe src="https://kiwiirc.com/client/irc.hackint.org/?nick=kiwi_test|?&theme=cli#the_playlist" frameborder="0" style="overflow:hidden;overflow-x:hidden;overflow-y:hidden;height:95%;width:100%;position:absolute;top:0px;left:0px;right:0px;bottom:0px" height="95%" width="100%"></iframe>
</div>
<div style="position:absolute;bottom:1px;display:inline-block;background-color:red;">
<audio controls autoplay="autoplay"><source src="http://lassul.us:8000/radio.ogg" type="audio/ogg">Your browser does not support the audio element.</audio>
</div>
<!-- page content -->
</body>
</html>
'';
in ''
default_type "text/html";
alias ${html};
'';
};
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services.syncthing.declarative.folders."the_playlist" = {
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path = "/home/radio/music/the_playlist";
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devices = [ "mors" "phone" "prism" ];
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};
krebs.permown."/home/radio/music/the_playlist" = {
owner = "radio";
group = "syncthing";
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umask = "0002";
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};
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}