diff --git a/nix/module-eval.nix b/nix/module-eval.nix
index 29d70fa2..5b017afe 100644
--- a/nix/module-eval.nix
+++ b/nix/module-eval.nix
@@ -49,42 +49,19 @@ let
           };
           boot.loader.grub.enable = false;
           system.stateVersion = "25.11";
-          # `recursiveUpdate`, not `//`: a plain `//` only merges the
-          # *top-level* keys of `extra` in, so an `extra` that touches a
-          # nested attr under an existing top-level key (e.g. `swarm.*`)
-          # silently drops every sibling under that key instead of merging
-          # into it — the same class of bug as the `services.hyperhive`
-          # double-nesting mistake this stub already had to dodge once,
-          # just one level down. `recursiveUpdate` merges nested attrsets
-          # all the way down instead.
-          services.hyperhive = lib.recursiveUpdate {
+          services.hyperhive = {
             enable = true;
             hiveName = "h1";
             swarm.domain = "t.local";
             swarm.hives.h1.domain = "h1.t.local";
-          } extra;
+          }
+          // extra;
         }
       ];
     }).config;
 
   allLocal = hive { enableAllLocalDefaults = true; };
   bare = hive { };
-  withCi = hive { swarm.forge.ci.enable = true; };
-
-  # A priority collision is a property of the *option*, not
-  # of the merged value's interior — nix throws the moment the value is
-  # demanded at all, so `seq`-ing each `serviceConfig` value to WHNF is
-  # both necessary and sufficient. `deepSeq` over-specifies this: it keeps
-  # walking *into* the resulting value after the merge already succeeded,
-  # and a package/derivation-shaped value's `override`/`overrideAttrs`
-  # self-reference sends it into nixpkgs' fixpoint machinery and blows the
-  # stack (measured — this is not a hypothetical).
-  forceCiServiceConfigs =
-    let
-      svcs = withCi.containers.hive-ci.config.systemd.services;
-      vals = lib.concatMap (s: builtins.attrValues (s.serviceConfig or { })) (builtins.attrValues svcs);
-    in
-    builtins.foldl' (acc: v: builtins.seq v acc) true vals;
 
   # Each case: a name stating the property, and `ok`.
   cases = [
@@ -123,17 +100,6 @@ let
       ok =
         !(builtins.hasAttr "= /.well-known/matrix/client" bare.services.nginx.virtualHosts."_".locations);
     }
-    {
-      # main got eval-borked twice by this exact class of bug (once on the
-      # unit's `Restart` key, once on `RestartSec`) — a nixpkgs bump to
-      # `gitea-actions-runner.nix` adds a plain `serviceConfig.*`
-      # definition that collides with one of ours, and nix refuses to
-      # merge two plain definitions at *host* eval. No other check
-      # instantiates a host with `containers.hive-ci` actually enabled, so
-      # the collision only surfaces on operator deploy, not in CI.
-      name = "the CI container's unit definitions merge without a priority collision";
-      ok = forceCiServiceConfigs;
-    }
   ];
 
   bad = builtins.filter (c: !c.ok) cases;