nixpkgs/nixos/modules/installer/tools/nixos-option
Maximilian Bosch e0780c5cff
nixos/nixos-option: fix evaluator to render a full submodule entry
When running e.g. `nixos-option users.users.ma27`, the evaluation breaks
since `ma27` is the attribute name in `attrsOf (submodule {})`, but not
a part of the option tree and therefore breaks with the following
errors:

```
error: At 'ma27' in path 'users.users.ma27': Attribute not found
An error occurred while looking for attribute names. Are you sure that 'users.users.ma27' exists?
```

This happens since the option evaluator expects that either the option
exists or the option is a submodule and the "next" token in the
attribute path points to an option (e.g. `users.users.ma27.createHome`).

This patch checks in the `Attribute not found` condition if the attribute-path
actually exists in the config tree. If that's true, a dummy-attrset is created
which contains `{_type = "__nixos-option-submodule-attr";}`, in that case, the
entire entry of the submodule will be displayed.
2019-12-12 14:27:36 +01:00
..
CMakeLists.txt nixos/nixos-option: Rewrite in a more suitable language 2019-11-04 15:11:44 +01:00
default.nix Add maintainer 2019-11-04 15:11:45 +01:00
libnix-copy-paste.cc Reformat for 4-space indentation 2019-11-04 15:11:44 +01:00
libnix-copy-paste.hh Reformat for 4-space indentation 2019-11-04 15:11:44 +01:00
nixos-option.cc nixos/nixos-option: fix evaluator to render a full submodule entry 2019-12-12 14:27:36 +01:00