add lib.serviceDependZpool

2025-08-21 05:02:05 -04:00 · 2025-08-21 05:02:05 -04:00 · df8a22760c
commit df8a22760c
parent a827438a4c
1 changed files with 19 additions and 0 deletions
--- a/lib.nix
+++ b/lib.nix
@ -78,5 +78,24 @@ inputs.nixpkgs.lib.extend (
          vpnNamespace = "wg";
        };
      };
+
+    serviceDependZpool =
+      serviceName: zpool:
+      { config, ... }:
+      {
+        systemd.services.${serviceName} = {
+          wants = [ "zfs-import-${zpool}.service" ];
+          after = [ "zfs-import-${zpool}.service" ];
+          requires = [ "zfs-import-${zpool}.service" ];
+        };
+
+        # assert that the pool is even enabled
+        config.assertions = [
+          {
+            assertion = builtins.elem zpool config.boot.zfs.extraPools;
+            message = "${zpool} is not enabled in `boot.zfs.extraPools`";
+          }
+        ];
+      };
  }
 )