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

       … while evaluating derivation 'terraform'
         whose name attribute is located at «git+https://github.com/NixOS/nixpkgs?ref=nixpkgs-unstable&rev=8be7bd0c83f12e2e3bbba07c9044d6fed9e66f7f&shallow=1»/pkgs/stdenv/generic/make-derivation.nix:651:11

       … while evaluating attribute 'text' of derivation 'terraform'
         at «git+https://github.com/NixOS/nixpkgs?ref=nixpkgs-unstable&rev=8be7bd0c83f12e2e3bbba07c9044d6fed9e66f7f&shallow=1»/pkgs/build-support/trivial-builders/default.nix:136:11:
          135|           name
          136|           text
             |           ^
          137|           executable

       … while evaluating definitions from `/nix/store/8b8xkxr5c41ylmkljf94s0izn6ph81yq-source/machines/build01/terraform-configuration.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: attribute 'zerotier' missing
       at «git+file:///var/lib/nixbot/worktrees/8-7d05d33ce61d-356?rev=6ed5af004d889769d22f957ca53c99d52111073c»/machines/build01/terraform-configuration.nix:28:12:
           27|         inherit
           28|           (self.nixosConfigurations.build01.config.clan.core.vars.generators.zerotier.files.zerotier-ip)
             |            ^
           29|           value