this derivation will be built:
  /nix/store/xjya1irznwlpdhp7k0wms4lhlijvf00c-treefmt-check.drv
building '/nix/store/xjya1irznwlpdhp7k0wms4lhlijvf00c-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 1428 files
treefmt-check> emitted 1204 files for processing
treefmt-check> formatted 1204 files (2 changed) in 5.482s
treefmt-check>  M lib/inventory/distributed-service/service-module.nix
treefmt-check>  M lib/inventory/distributed-service/tests/per_machine_args.nix
treefmt-check> diff --git a/lib/inventory/distributed-service/service-module.nix b/lib/inventory/distributed-service/service-module.nix
treefmt-check> index fdd07c0..0389497 100644
treefmt-check> --- a/lib/inventory/distributed-service/service-module.nix
treefmt-check> +++ b/lib/inventory/distributed-service/service-module.nix
treefmt-check> @@ -276,8 +276,8 @@ in
treefmt-check>                            ''
treefmt-check>  
treefmt-check>                        )
treefmt-check> -                      name
treefmt-check> -                      v
treefmt-check> +                        name
treefmt-check> +                        v
treefmt-check>                      ) v;
treefmt-check>                  };
treefmt-check>                }
treefmt-check> diff --git a/lib/inventory/distributed-service/tests/per_machine_args.nix b/lib/inventory/distributed-service/tests/per_machine_args.nix
treefmt-check> index 1595d08..71de178 100644
treefmt-check> --- a/lib/inventory/distributed-service/tests/per_machine_args.nix
treefmt-check> +++ b/lib/inventory/distributed-service/tests/per_machine_args.nix
treefmt-check> @@ -96,7 +96,7 @@ in
treefmt-check>      expr = {
treefmt-check>        hasMachineSettings =
treefmt-check>          res.config._services.allServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer.machines.jon
treefmt-check> -        ? settings;
treefmt-check> +          ? settings;
treefmt-check>  
treefmt-check>        # settings are specific.
treefmt-check>        # Below we access:
treefmt-check> @@ -108,7 +108,7 @@ in
treefmt-check>  
treefmt-check>        hasRoleSettings =
treefmt-check>          res.config._services.allServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer
treefmt-check> -        ? settings;
treefmt-check> +          ? settings;
treefmt-check>  
treefmt-check>        # settings are specific.
treefmt-check>        # Below we access:
error: Cannot build '/nix/store/xjya1irznwlpdhp7k0wms4lhlijvf00c-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7ff7b40ss2dk67mwbb63fgw8bjfn1bsz-treefmt-check
       Last 25 log lines:
       >                      ) v;
       >                  };
       >                }
       > diff --git a/lib/inventory/distributed-service/tests/per_machine_args.nix b/lib/inventory/distributed-service/tests/per_machine_args.nix
       > index 1595d08..71de178 100644
       > --- a/lib/inventory/distributed-service/tests/per_machine_args.nix
       > +++ b/lib/inventory/distributed-service/tests/per_machine_args.nix
       > @@ -96,7 +96,7 @@ in
       >      expr = {
       >        hasMachineSettings =
       >          res.config._services.allServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer.machines.jon
       > -        ? settings;
       > +          ? settings;
       >  
       >        # settings are specific.
       >        # Below we access:
       > @@ -108,7 +108,7 @@ in
       >  
       >        hasRoleSettings =
       >          res.config._services.allServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer
       > -        ? settings;
       > +          ? settings;
       >  
       >        # settings are specific.
       >        # Below we access:
       For full logs, run:
         nix log /nix/store/xjya1irznwlpdhp7k0wms4lhlijvf00c-treefmt-check.drv