[kreisys@ip-192-168-0-167:~/nur-combined]$ nix-instantiate --expr '(import ./. {}).repos.ma27.modules.hydra'
error: NUR import call didn't receive a pkgs argument, but the evaluation of NUR's ma27 repository requires it.

This is either because
  - You're trying to use a package from that repository, but didn't pass a `pkgs` argument to the NUR import.
    In that case, refer to the installation instructions at https://github.com/nix-community/nur#installation on how to properly import NUR

  - You're trying to use a module/overlay from that repository, but it didn't properly declare their module.
    In that case, inform the maintainer of the repository: https://gitlab.com/Ma27/nixexprs

(use '--show-trace' to show detailed location information)

[kreisys@ip-192-168-0-167:~/nur-combined]$ nix-instantiate --expr '(import ./. {}).repos.ma27.modules.hydra' --eval
error: NUR import call didn't receive a pkgs argument, but the evaluation of NUR's ma27 repository requires it.

This is either because
  - You're trying to use a package from that repository, but didn't pass a `pkgs` argument to the NUR import.
    In that case, refer to the installation instructions at https://github.com/nix-community/nur#installation on how to properly import NUR

  - You're trying to use a module/overlay from that repository, but it didn't properly declare their module.
    In that case, inform the maintainer of the repository: https://gitlab.com/Ma27/nixexprs

(use '--show-trace' to show detailed location information)

[kreisys@ip-192-168-0-167:~/nur-combined]$ nix-instantiate --expr '(import ./. {}).repos.peel.modules.weechat' --eval
error: NUR import call didn't receive a pkgs argument, but the evaluation of NUR's peel repository requires it.

This is either because
  - You're trying to use a package from that repository, but didn't pass a `pkgs` argument to the NUR import.
    In that case, refer to the installation instructions at https://github.com/nix-community/nur#installation on how to properly import NUR

  - You're trying to use a module/overlay from that repository, but it didn't properly declare their module.
    In that case, inform the maintainer of the repository: https://github.com/peel/nur-packages

(use '--show-trace' to show detailed location information)

[kreisys@ip-192-168-0-167:~/nur-combined]$ nix-instantiate --expr '(import ./. {}).repos.tilpner.modules.duplicity'
error: expression does not evaluate to a derivation (or a set or list of those)

[kreisys@ip-192-168-0-167:~/nur-combined]$ nix-instantiate --expr '(import ./. {}).repos.tilpner.modules.duplicity' --eval
/nix/store/461d5z2azwhqnjiv1y89hm77dqw5gd4x-tilpner/modules/duplicity.nix