refactor (bosephus): Disk mounting uses tmpfiles rules instead of

systemd service

services/crowdsec.nix

@@ -1,4 +1,4 @@
-{ pkgs, config, ... }: {
+{ pkgs, config, lib, ... }: {
   services = {
     crowdsec = {
       enable = true;
@@ -46,6 +46,40 @@
 
   users.users."${config.services.crowdsec.user}".extraGroups = [ "adm" ];
 
-  systemd.tmpfiles.rules = let cfg = config.services.crowdsec;
+  # Workaround generated by Claude Opus 4.8 - seems reasonable
-  in [ "d /var/lib/crowdsec 0755 ${cfg.user} ${cfg.group}" ];
+  # --- Workarounds for the immature nixpkgs 26.05 crowdsec modules ---
+  # Tracking issue: https://github.com/NixOS/nixpkgs/issues/469519
+
+  # (1) The raw `cscli` used by the firewall-bouncer register service (and by
+  # manual invocations) reads /etc/crowdsec/config.yaml, which the module
+  # otherwise never writes. Materialize the same generated config there.
+  environment.etc."crowdsec/config.yaml".source =
+    (pkgs.formats.yaml { }).generate "crowdsec.yaml"
+    config.services.crowdsec.settings.general;
+
+  # (2) The modules mix `DynamicUser = true` with a `StateDirectory` named
+  # "crowdsec" shared across several units. Dynamic UIDs differ per unit, and
+  # the firewall-bouncer register service declares `StateDirectory=crowdsec`
+  # while the agent does not, so systemd relocates /var/lib/crowdsec into the
+  # root-only /var/lib/private, after which the agent can no longer reach it
+  # ("mkdir /var/lib/crowdsec: Permission denied"), the LAPI never starts, and
+  # the bouncer gets connection refused. Pin every unit that touches the state
+  # to the static `crowdsec` user and give the agent + hub updater a matching
+  # StateDirectory, so /var/lib/crowdsec is a normal directory owned by
+  # `crowdsec`. systemd migrates the existing data out of /var/lib/private.
+  systemd.services.crowdsec.serviceConfig = {
+    DynamicUser = lib.mkForce false;
+    StateDirectory = "crowdsec";
+  };
+  systemd.services.crowdsec-update-hub.serviceConfig = {
+    DynamicUser = lib.mkForce false;
+    StateDirectory = "crowdsec";
+  };
+  systemd.services.crowdsec-firewall-bouncer-register.serviceConfig.DynamicUser =
+    lib.mkForce false;
+
+  # (3) The bouncer `requires` the register service but is not ordered after it,
+  # so it can try to load the API-key credential before it has been written.
+  systemd.services.crowdsec-firewall-bouncer.after =
+    [ "crowdsec-firewall-bouncer-register.service" ];
 }

systems/linux/hardware-configuration/bosephus-external-drives.nix

@@ -1,37 +1,22 @@
-{ pkgs, ... }:
+{ ... }:
-
+let
+  disks = [
     {
-  fileSystems = {
+      uuid = "f719549e-fe01-4367-a37b-eeb4bdda4138";
-    "/media/my-book-duo" = {
+      mountPoint = "/media/my-book-duo";
-      device = "/dev/disk/by-uuid/f719549e-fe01-4367-a37b-eeb4bdda4138";
-      fsType = "btrfs";
-      options = [ "defaults" "compress=zstd" ];
-    };
-
-    "/media/g-drive" = {
-      device = "/dev/disk/by-uuid/1915dcd7-7daa-40bf-82be-e808e313becd";
-      fsType = "btrfs";
-      options = [ "defaults" "compress=zstd" ];
-    };
-  };
-
-  systemd.services."fix-mount-permissions" = {
-    wantedBy = [ "local-fs.target" ];
-    after = [ "local-fs.target" ];
-    path = [ pkgs.coreutils ];
-    serviceConfig = {
-      Type = "oneshot";
-      ExecStart = ''
-        ${pkgs.coreutils}/bin/chown root:mixstudios /media/my-book-duo
-        ${pkgs.coreutils}/bin/chown root:mixstudios /media/g-drive
-
-        ${pkgs.coreutils}/bin/chmod 2775 /media/my-book-duo
-        ${pkgs.coreutils}/bin/chmod 2775 /media/g-drive
-
-        ${pkgs.coreutils}/bin/chgrp -R mixstudios /media/my-book-duo
-        ${pkgs.coreutils}/bin/chgrp -P mixstudios /media/g-drive
-      '';
-    };
-  };
-
     }
+    {
+      uuid = "1915dcd7-7daa-40bf-82be-e808e313becd";
+      mountPoint = "/media/g-drive";
+    }
+  ];
+in map (x: {
+  fileSystems = {
+    ${x.mountPoint} = {
+      device = "/dev/disk/by-uuid/${x.uuid}";
+      fsType = "btrfs";
+      options = [ "defaults" "compress=zstd" ];
+    };
+  };
+  systemd.tmpfiles.rules = [ "z ${x.mountPoint} 2775 root mixstudios -" ];
+}) disks