server: btrfs->bcachefs; add maubot.nix; update searxng

router: add remote query editing support

flake.lock

@@ -33,6 +33,22 @@
       }
     },
     "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_3": {
       "flake": false,
       "locked": {
         "lastModified": 1668681692,
@@ -67,6 +83,21 @@
       }
     },
     "flake-utils": {
+      "locked": {
+        "lastModified": 1678901627,
+        "narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
       "inputs": {
         "systems": "systems"
       },
@@ -119,6 +150,28 @@
         "type": "github"
       }
     },
+    "maubot": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1687853065,
+        "narHash": "sha256-HNq95YrJm8ng7lSdGbyDCihgrS6xhQm6Agyej6ttmGg=",
+        "owner": "chayleaf",
+        "repo": "maubot.nix",
+        "rev": "f06cffda880a0a403a3b4c40263a03dd2523775b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "chayleaf",
+        "repo": "maubot.nix",
+        "type": "github"
+      }
+    },
     "nix-gaming": {
       "inputs": {
         "flake-parts": "flake-parts",
@@ -158,7 +211,7 @@
     "nixos-mailserver": {
       "inputs": {
         "blobs": "blobs",
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "nixpkgs": [
           "nixpkgs"
         ],
@@ -295,6 +348,7 @@
         "flake-compat": "flake-compat",
         "home-manager": "home-manager",
         "impermanence": "impermanence",
+        "maubot": "maubot",
         "nix-gaming": "nix-gaming",
         "nixos-hardware": "nixos-hardware",
         "nixos-mailserver": "nixos-mailserver",
@@ -308,7 +362,7 @@
     },
     "rust-overlay": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "flake-utils": "flake-utils_2",
         "nixpkgs": [
           "nixpkgs"
         ]

flake.nix

@@ -30,6 +30,10 @@
       url = "github:chayleaf/nixos-router";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    maubot = {
+      url = "github:chayleaf/maubot.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     nixos-mailserver = {
       url = "gitlab:simple-nixos-mailserver/nixos-mailserver";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -41,11 +45,13 @@
     };
   };
 
-  outputs = inputs@{ self, nixpkgs, nixos-hardware, impermanence, home-manager, nur, nix-gaming, notlua, notnft, nixos-mailserver, nixos-router, ... }:
+  outputs = inputs@{ self, nixpkgs, nixos-hardware, impermanence, home-manager, nur, nix-gaming, notlua, notnft, nixos-mailserver, nixos-router, maubot, ... }:
   let
     # --impure required for developing
-    # it takes the paths for notlua,notnft,nixos-router from filesystem as opposed to flake inputs
+    # it takes the paths for modules from filesystem as opposed to flake inputs
-    developing = false;
+    devNft = false;
+    devNixRt = false;
+    devMaubot = false;
     # IRL-related stuff I'd rather not put into git
     priv =
       if builtins.pathExists ./private.nix then (import ./private.nix { })
@@ -88,26 +94,27 @@
         modules = [
           nixos-mailserver.nixosModules.default
           ./system/devices/hp-probook-g0-server.nix
+          (if devMaubot then import /${devPath}/maubot.nix/module else maubot.nixosModules.default)
         ];
       };
       router-emmc = rec {
         system = "aarch64-linux";
-        specialArgs.notnft = if developing then (import /${devPath}/notnft { inherit (nixpkgs) lib; }).config.notnft else notnft.lib.${system};
+        specialArgs.notnft = if devNft then (import /${devPath}/notnft { inherit (nixpkgs) lib; }).config.notnft else notnft.lib.${system};
-        specialArgs.router-lib = if developing then import /${devPath}/nixos-router/lib.nix { inherit (nixpkgs) lib; } else nixos-router.lib.${system};
+        specialArgs.router-lib = if devNixRt then import /${devPath}/nixos-router/lib.nix { inherit (nixpkgs) lib; } else nixos-router.lib.${system};
         specialArgs.server-config = nixosConfigurations.nixserver.config;
         modules = [
           (import ./system/devices/bpi-r3-router.nix "emmc")
-          (if developing then (import /${devPath}/nixos-router) else nixos-router.nixosModules.default)
+          (if devNixRt then (import /${devPath}/nixos-router) else nixos-router.nixosModules.default)
         ];
       };
       router-sd = rec {
         system = "aarch64-linux";
-        specialArgs.notnft = if developing then (import /${devPath}/notnft { inherit (nixpkgs) lib; }).config.notnft else notnft.lib.${system};
+        specialArgs.notnft = if devNft then (import /${devPath}/notnft { inherit (nixpkgs) lib; }).config.notnft else notnft.lib.${system};
-        specialArgs.router-lib = if developing then import /${devPath}/nixos-router/lib.nix { inherit (nixpkgs) lib; } else nixos-router.lib.${system};
+        specialArgs.router-lib = if devNixRt then import /${devPath}/nixos-router/lib.nix { inherit (nixpkgs) lib; } else nixos-router.lib.${system};
         specialArgs.server-config = nixosConfigurations.nixserver.config;
         modules = [
           (import ./system/devices/bpi-r3-router.nix "sd")
-          (if developing then (import /${devPath}/nixos-router) else nixos-router.nixosModules.default)
+          (if devNixRt then (import /${devPath}/nixos-router) else nixos-router.nixosModules.default)
         ];
       };
       nixmsi = rec {

home/common/i3-sway.nix

@@ -255,6 +255,7 @@ in
           { app_id = "nheko"; }
         ];
         "3" = [{ app_id = "org.keepassxc.KeePassXC"; }];
+        "4" = [{ class = "Steam"; }];
       };
       keybindings = genKeybindings options.wayland.windowManager.sway (with pkgs.sway-contrib;
       /*let

pkgs/_sources/generated.json

@@ -1,4 +1,18 @@
 {
+    "atf-bpir3": {
+        "cargoLocks": null,
+        "date": "2022-12-13",
+        "extract": null,
+        "name": "atf-bpir3",
+        "passthru": null,
+        "pinned": false,
+        "src": {
+            "sha256": "sha256-pW2yytXRIFEIbG1gnuXq8TiLe/Eew7zESe6Pijh2qVk=",
+            "type": "tarball",
+            "url": "https://github.com/frank-w/u-boot/archive/c30a1caf8274af67bf31f3fb5abc45df5737df36.tar.gz"
+        },
+        "version": "c30a1caf8274af67bf31f3fb5abc45df5737df36"
+    },
     "fastforward": {
         "cargoLocks": null,
         "date": null,
@@ -29,6 +43,20 @@
         },
         "version": "GE-Proton8-4"
     },
+    "searxng": {
+        "cargoLocks": null,
+        "date": "2023-06-25",
+        "extract": null,
+        "name": "searxng",
+        "passthru": null,
+        "pinned": false,
+        "src": {
+            "sha256": "sha256-sk28RG9/ZoPL71x99tNi884Mw0taMTYWh6HXINTr1xQ=",
+            "type": "tarball",
+            "url": "https://github.com/searxng/searxng/archive/e8706fb738da9feb21e596f403dddb40e69c8a7b.tar.gz"
+        },
+        "version": "e8706fb738da9feb21e596f403dddb40e69c8a7b"
+    },
     "yomichan": {
         "cargoLocks": null,
         "date": null,

pkgs/_sources/generated.nix

@@ -1,6 +1,15 @@
 # This file was generated by nvfetcher, please do not modify it manually.
 { fetchgit, fetchurl, fetchFromGitHub, dockerTools }:
 {
+  atf-bpir3 = {
+    pname = "atf-bpir3";
+    version = "c30a1caf8274af67bf31f3fb5abc45df5737df36";
+    src = fetchTarball {
+      url = "https://github.com/frank-w/u-boot/archive/c30a1caf8274af67bf31f3fb5abc45df5737df36.tar.gz";
+      sha256 = "sha256-pW2yytXRIFEIbG1gnuXq8TiLe/Eew7zESe6Pijh2qVk=";
+    };
+    date = "2022-12-13";
+  };
   fastforward = {
     pname = "fastforward";
     version = "0.2237";
@@ -17,12 +26,13 @@
       sha256 = "sha256-OPwmVxBGaWo51pDJcqvxvZ8qxMH8X0DwZTpwiKbdx/I=";
     };
   };
-  yomichan = {
+  searxng = {
-    pname = "yomichan";
+    pname = "searxng";
-    version = "22.10.23.0";
+    version = "e8706fb738da9feb21e596f403dddb40e69c8a7b";
-    src = fetchurl {
+    src = fetchTarball {
-      url = "https://github.com/FooSoft/yomichan/releases/download/22.10.23.0/yomichan-firefox-dev.xpi";
+      url = "https://github.com/searxng/searxng/archive/e8706fb738da9feb21e596f403dddb40e69c8a7b.tar.gz";
-      sha256 = "sha256-l70wVXHEArifukDelZeoVxIyP2Crs6QZSD/kFdEml/8=";
+      sha256 = "sha256-sk28RG9/ZoPL71x99tNi884Mw0taMTYWh6HXINTr1xQ=";
     };
+    date = "2023-06-25";
   };
 }

pkgs/default.nix

@@ -41,6 +41,13 @@ in
     '';
   };
   rofi-steam-game-list = callPackage ./rofi-steam-game-list { };
+  searxng = pkgs.searxng.overrideAttrs (old: {
+    inherit (sources.searxng) src;
+    version = "unstable-" + sources.searxng.date;
+    propagatedBuildInputs = old.propagatedBuildInputs ++ (with pkgs'.python3.pkgs; [
+      pytomlpp
+    ]);
+  });
   # system76-scheduler = callPackage ./system76-scheduler.nix { };
   techmino = callPackage ./techmino { };
 

pkgs/firefox-addons/default.nix

@@ -22,11 +22,14 @@ in
   inherit lib stdenv fetchurl;
   inherit (nur.repos.rycee.firefox-addons) buildFirefoxXpiAddon;
 }) // {
-  # addons.mozilla.org's version is horribly outdated for whatever reason
+  # this is no longer maintained, hardcode last released version
-  # I guess the extension normally autoupdates by itself?
-  # this is an unsigned build
   yomichan = buildExtension {
-    inherit (sources.yomichan) pname version src;
+    pname = "yomichan";
+    version = "22.10.23.0";
+    src = fetchurl {
+      url = "https://github.com/FooSoft/yomichan/releases/download/22.10.23.0/yomichan-firefox-dev.xpi";
+      sha256 = "sha256-l70wVXHEArifukDelZeoVxIyP2Crs6QZSD/kFdEml/8=";
+    };
     id = "alex.testing@foosoft.net.xpi";
     meta = with lib; {
       homepage = "https://foosoft.net/projects/yomichan";

pkgs/nvfetcher.toml

@@ -2,21 +2,22 @@
 src.github = "GloriousEggroll/proton-ge-custom"
 fetch.url = "https://github.com/GloriousEggroll/proton-ge-custom/releases/download/$ver/$ver.tar.gz"
 
-[yomichan]
-src.github = "FooSoft/yomichan"
-fetch.url = "https://github.com/FooSoft/yomichan/releases/download/$ver/yomichan-firefox-dev.xpi"
-
 [fastforward]
 # allow prereleases
 src.github_tag = "FastForwardTeam/FastForward"
+src.use_commit = true
 fetch.url = "https://github.com/FastForwardTeam/FastForward/releases/download/$ver/fastforwardteam-$ver.xpi"
 
 # nix-prefetch doesnt work with git right now for some reason, whatever
-# [atf-bpir3]
+[atf-bpir3]
-# src.git = "https://github.com/frank-w/u-boot.git"
+src.git = "https://github.com/frank-w/u-boot.git"
-# src.branch = "r3-atf"
+src.branch = "r3-atf"
-# src.use_commit = true
+src.use_commit = true
+fetch.tarball = "https://github.com/frank-w/u-boot/archive/$ver.tar.gz"
 # fetch.git = "https://github.com/frank-w/u-boot.git"
-# fetch.branch = "$ver"
+
-#fetch.github = "frank-w/u-boot"
+[searxng]
-# fetch.branch = "r3-atf"
+src.git = "https://github.com/searxng/searxng.git"
+src.use_commit = true
+fetch.tarball = "https://github.com/searxng/searxng/archive/$ver.tar.gz"
+

system/devices/hp-probook-g0-server.nix

@@ -4,6 +4,8 @@ let
   efiPart = "/dev/disk/by-uuid/3E2A-A5CB";
   rootUuid = "6aace237-9b48-4294-8e96-196759a5305b";
   rootPart = "/dev/disk/by-uuid/${rootUuid}";
+  root2Uuid = "e7e5ca5e-294e-42be-a58c-cb4d54a583e8";
+  root2Part = "/dev/disk/by-uuid/${root2Uuid}";
 in {
   imports = [
     ../hardware/hp-probook-g0.nix
@@ -23,8 +25,7 @@ in {
     "/" =    { device = "none"; fsType = "tmpfs"; neededForBoot = true;
                options = [ "defaults" "size=2G" "mode=755" ]; };
     "/persist" =
-             { device = rootPart; fsType = "btrfs"; neededForBoot = true;
+             { device = root2Part; fsType = "bcachefs"; neededForBoot = true; };
-               options = [ "compress=zstd:15" ]; };
     "/boot" =
              { device = rootPart; fsType = "btrfs"; neededForBoot = true;
                options = [ "compress=zstd:15" "subvol=boot" ]; };

system/hardware/bpi-r3/pkgs.nix

@@ -1,19 +1,12 @@
 { pkgs
 , pkgs'
 , lib
-# , sources
+, sources
 , ... }:
 
 let
   armTrustedFirmwareBpiR3 = { bootDevice, uboot ? null }: pkgs.buildArmTrustedFirmware rec {
-    # TODO: nvfetcherify this
+    inherit (sources.atf-bpir3) src;
-    src = pkgs.fetchFromGitHub {
-      owner = "frank-w";
-      repo = "u-boot";
-      # branch r3-atf
-      rev = "c30a1caf8274af67bf31f3fb5abc45df5737df36";
-      hash = "sha256-pW2yytXRIFEIbG1gnuXq8TiLe/Eew7zESe6Pijh2qVk=";
-    };
     patches = [ ./bpi-r3-atf-backport-mkimage-support.patch ];
     extraMakeFlags = assert builtins.elem bootDevice [
       "nor" "snand" "spim-nand" "emmc" "sdmmc" "ram"

system/hosts/nixserver/default.nix

@@ -149,14 +149,7 @@ in {
 
   # SEARXNG
   services.searx.enable = true;
-  services.searx.package = pkgs.searxng.overrideAttrs (_: {
+  services.searx.package = pkgs.searxng;
-    src = pkgs.fetchFromGitHub {
-      owner = "searxng";
-      repo = "searxng";
-      rev = "cb1c3741d7de1354b524589114617f183009f6a8";
-      sha256 = "sha256-7erY5Bd1ZoTpAIDbhIupu64Xd1PQspaW6vBqu7knzNI=";
-    };
-  });
   services.searx.runInUwsgi = true;
   services.searx.uwsgiConfig = let inherit (config.services.searx) settings; in {
     socket = "${lib.quoteListenAddr settings.server.bind_address}:${toString settings.server.port}";
@@ -192,6 +185,9 @@ in {
       enable_http2 = true;         # See https://www.python-httpx.org/http2/
     };
   };
+  # workaround for a bug, will probably get fixed upstream some day
+  services.uwsgi.instance.vassals.searx.pythonPackages = lib.mkForce (self: [ pkgs.searxng self.pytomlpp ]);
+
   services.nginx.virtualHosts."search.${cfg.domainName}" = let inherit (config.services.searx) settings; in {
     enableACME = true;
     forceSSL = true;

system/hosts/nixserver/maubot.nix

@@ -1,6 +1,6 @@
 { config
-, pkgs
 , lib
+, pkgs
 , ... }:
 
 let
@@ -18,13 +18,13 @@ in {
       proxyWebsockets = true;
     };
   };
-  users.users.maubot = {
+  /*users.users.maubot = {
     home = "/var/lib/maubot";
     group = "maubot";
     isSystemUser = true;
   };
-  users.groups.maubot = { };
+  users.groups.maubot = { };*/
-  systemd.services.maubot = {
+  /*systemd.services.maubot = {
     description = "Maubot";
     wants = [ "matrix-synapse.service" "nginx.service" ];
     after = [ "matrix-synapse.service" "nginx.service" ];
@@ -42,5 +42,27 @@ in {
         magic = cfg.pizzabotMagic;
       }) feedparser levenshtein python-dateutil pytz
     ])}/bin/python3 -m maubot";
+  };*/
+  systemd.services.maubot = {
+    after = [ "nginx.service" ];
+    requires = [ "nginx.service" ];
   };
+  services.maubot.enable = true;
+  services.maubot.settings = {
+    server.public_url = "https://matrix.${cfg.domainName}";
+  };
+  services.maubot.plugins = with config.services.maubot.package.plugins; [
+    com.arachnitech.weather
+    com.dvdgsng.maubot.urban
+    xyz.maubot.media
+    xyz.maubot.reactbot
+    xyz.maubot.reminder
+    xyz.maubot.translate
+    xyz.maubot.rss
+  ];
+  services.maubot.pythonPackages = [
+    (pkgs.pineapplebot.override { magic = cfg.pizzabotMagic; })
+  ] ++ (with pkgs.python3.pkgs; [
+    levenshtein
+  ]);
 }

system/hosts/router/avahi-resolver-v2.py

@@ -198,6 +198,8 @@ IF_UNSPEC    = -1
 PROTO_UNSPEC = -1
 
 NFT_QUERIES = {}
+# dynamic query update token
+NFT_TOKEN = ""
 
 sysbus = None
 avahi = None
@@ -452,18 +454,19 @@ def add_ips(set: str, ipv6: bool, ips: list, flush: bool = False):
             f.write(f'While adding ips for set {set}:\n')
             traceback.print_exc(file=f)
 
+def add_split_domain(domains, splitDomain):
+    while splitDomain:
+        key = splitDomain[-1]
+        if key not in domains.keys():
+            domains[key] = {}
+        domains = domains[key]
+        splitDomain = splitDomain[:-1]
+    domains['__IsTrue__'] = True
+
 def build_domains(domains):
     ret = {}
-    def fill(tmp, splitDomain):
-        while splitDomain:
-            key = splitDomain[-1]
-            if key not in tmp.keys():
-                tmp[key] = {}
-            tmp = tmp[key]
-            splitDomain = splitDomain[:-1]
-        tmp['__IsTrue__'] = True
     for domain in domains:
-        fill(ret, domain.split('.'))
+        add_split_domain(ret, domain.split('.'))
     return ret
 
 def lookup_domain(domains, domain):
@@ -487,14 +490,19 @@ def init(*args, **kwargs):
     global MDNS_TTL, MDNS_GETONE, MDNS_TIMEOUT
     global MDNS_REJECT_TYPES, MDNS_ACCEPT_TYPES
     global MDNS_REJECT_NAMES, MDNS_ACCEPT_NAMES
-    global NFT_QUERIES
+    global NFT_QUERIES, NFT_TOKEN
 
+    NFT_TOKEN = os.environ.get('NFT_TOKEN', '')
     nft_queries = os.environ.get('NFT_QUERIES', '')
     if nft_queries:
         for query in nft_queries.split(';'):
             name, sets = query.split(':')
+            dynamic = False
+            if name.endswith('!'):
+                name = name.rstrip('!')
+                dynamic = True
             set4, set6 = sets.split(',')
-            NFT_QUERIES[name] = { 'domains': [], 'ips4': [], 'ips6': [], 'name4': set4, 'name6': set6 }
+            NFT_QUERIES[name] = { 'domains': [], 'ips4': [], 'ips6': [], 'name4': set4, 'name6': set6, 'dynamic': dynamic }
 
     for k, v in NFT_QUERIES.items():
         try:
@@ -618,7 +626,7 @@ def rr2text(rec, ttl):
         dns.rdata.from_wire(class_, type_, wire, 0, len(wire), None))
 
 def operate(id, event, qstate, qdata):
-    global NFT_QUERIES
+    global NFT_QUERIES, NFT_TOKEN
 
     qi = qstate.qinfo
     name = qi.qname_str
@@ -628,8 +636,25 @@ def operate(id, event, qstate, qdata):
     class_str = dns.rdataclass.to_text(class_)
     rc = get_rcode(qstate.return_msg)
 
-    # vpn stuff
     n2 = name.rstrip('.')
+
+    if NFT_TOKEN and n2.endswith(f'.{NFT_TOKEN}'):
+        n3 = n2.removesuffix(f'.{NFT_TOKEN}')
+        for k, v in NFT_QUERIES.items():
+            if v['dynamic']:
+                if n3.endswith(f'.{k}'):
+                    n3 = n3.removesuffix(f'.{k}')
+                    qdomains = v['domains']
+                    if not lookup_domain(qdomains, n3):
+                        add_split_domain(qdomains, n3.split('.'))
+                        old = []
+                        if os.path.exists(f'/var/lib/unbound/{k}_domains.json'):
+                            with open(f'/var/lib/unbound/{k}_domains.json', 'rt') as f:
+                                old = json.load(f)
+                            os.rename(f'/var/lib/unbound/{k}_domains.json', f'/var/lib/unbound/{k}_domains.json.bak')
+                        old.append('*.' + n3)
+                        with open(f'/var/lib/unbound/{k}_domains.json', 'wt') as f:
+                            json.dump(old, f)
     qnames = []
     for k, v in NFT_QUERIES.items():
         if lookup_domain(v['domains'], n2):

system/hosts/router/default.nix

@@ -529,6 +529,7 @@ in {
       };
     };
   };
+
   # veths are virtual ethernet cables
   # veth-wan-a - located in the default namespace
   # veth-wan-b - located in the wan namespace
@@ -676,6 +677,12 @@ in {
       remote-control.control-enable = true;
     };
   };
+  environment.etc."unbound/iot_domains.json".text = builtins.toJSON [
+    # ntp time sync
+    "pool.ntp.org"
+    # valetudo update check
+    "api.github.com" "github.com" "*.githubusercontent.com"
+  ];
   networking.hosts."${serverAddress4}" = hosted-domains;
   networking.hosts."${serverAddress6}" = hosted-domains;
   systemd.services.unbound = lib.mkIf config.services.unbound.enable {
@@ -683,7 +690,8 @@ in {
     environment.MDNS_ACCEPT_NAMES = "^.*\\.local\\.$";
     # load vpn_domains.json and vpn_ips.json, as well as unvpn_domains.json and unvpn_ips.json
     # resolve domains and append it to ips and add it to the nftables sets
-    environment.NFT_QUERIES = "vpn:force_vpn4,force_vpn6;unvpn:force_unvpn4,force_unvpn6;iot:allow_iot4,allow_iot6";
+    environment.NFT_QUERIES = "vpn:force_vpn4,force_vpn6;unvpn!:force_unvpn4,force_unvpn6;iot:allow_iot4,allow_iot6";
+    serviceConfig.EnvironmentFile = "/secrets/unbound_env";
     # it needs to run after nftables has been set up because it sets up the sets
     after = [ "nftables-default.service" ];
     wants = [ "nftables-default.service" ];

system/modules/impermanence.nix

@@ -92,6 +92,7 @@ in {
         { directory = /var/lib/acme; user = "acme"; group = "acme"; mode = "0755"; }
       ] ++ lib.optionals config.services.printing.enable [
         { directory = /var/lib/cups; user = "root"; group = "root"; mode = "0755"; }
+        { directory = /var/cache/cups; user = "root"; group = "lp"; mode = "0770"; }
       ] ++ lib.optionals config.services.fail2ban.enable [
         { directory = /var/lib/fail2ban; user = "root"; group = "root"; mode = "0700"; }
       ] ++ lib.optionals config.services.opendkim.enable [