error:
       … while calling the 'derivationStrict' builtin
         at «nix-internal»/derivation-internal.nix:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating derivation 'pi-agent-environment-policy'
         whose name attribute is located at «https://releases.nixos.org/nixos/unstable-small/nixos-26.11pre1076196.9e40872c6388/nixexprs.tar.xz?narHash=sha256-VgXXkkFgjPIp/VLfFGh41jnLhj0ygFMsyOZbh/T%2Bf3I%3D»/pkgs/stdenv/generic/make-derivation.nix:651:11

       error: Nix daemon disconnected unexpectedly (maybe it crashed?)