this derivation will be built:
  /nix/store/8fz0krwp8q5bhxck3wnlh0dpj2x1n6wv-treefmt-check.drv
error: Cannot build '/nix/store/8fz0krwp8q5bhxck3wnlh0dpj2x1n6wv-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9wijf57d98qqznlrybcxabr5gz1p2c41-treefmt-check
       Last 25 log lines:
       >            "--enr-address=${lib.removePrefix "extip:" settings.beacon.p2p.nat}"
       >          ]
       > -      ++ lib.optionals (settings.beacon.checkpointSyncUrl != null) [
       > -        "--checkpoint-sync-url=${settings.beacon.checkpointSyncUrl}"
       > -      ];
       > +    ++ lib.optionals (settings.beacon.checkpointSyncUrl != null) [
       > +      "--checkpoint-sync-url=${settings.beacon.checkpointSyncUrl}"
       > +    ];
       >    };
       >  
       >    environment.etc."alloy/dvt-lighthouse-beacon.alloy".text = ''
       > diff --git a/clanServices/dvt/tests/lib.nix b/clanServices/dvt/tests/lib.nix
       > index 4d6a02b..980996c 100644
       > --- a/clanServices/dvt/tests/lib.nix
       > +++ b/clanServices/dvt/tests/lib.nix
       > @@ -925,7 +925,8 @@ in
       >                # is /ip4/203.0.113.7/tcp/9000 for every entry (all ECL nodes share this
       >                # test NAT IP), which is unreachable inside the QEMU VM network — actual CL
       >                # inter-node peering does not occur. Each node starts with a stable identity.
       > -              settings.beacon.p2p.staticPeers = clPackage != "nimbus" && clPackage != "lodestar" && clPackage != "lighthouse";
       > +              settings.beacon.p2p.staticPeers =
       > +                clPackage != "nimbus" && clPackage != "lodestar" && clPackage != "lighthouse";
       >                settings.beacon.p2p.directPeering = clPackage == "lodestar";
       >                # Port must match the chosen CL client's REST API port
       >                settings.beacon.rest.port = cl.restPortInventorySetting;
       For full logs, run:
         nix log /nix/store/8fz0krwp8q5bhxck3wnlh0dpj2x1n6wv-treefmt-check.drv