Is there a way to get the current file location within the config file?

[S-Dafarra]

Hi there, great work! I am new to hydra and am looking for a way to have the absolute path to the configuration file itself in the parameters.

Suppose to have a tree structure like the following

.
└── config/
    ├── config.yaml
    └── module/
        ├── module_1.yaml
        └── other_config_file.ini

With config.yaml being

defaults:
  - module: module_1

Within module_1.yaml I would like to have something like

this_file_dir: ${the_variable_I_would_need}
ini_file: ${this_file_dir}/other_config_file.ini

In this way, in code, I could do something like

    @hydra.main(config_path="./config", config_name="config", version_base="1.1")
    def main(cfg: DictConfig):
        f = third_party_library_needing_absolute_path.open(cfg.module.ini_file)

From #1680 I see it is possible to get the current working directory, but from https://hydra.cc/docs/0.11/configure_hydra/intro/#runtime-variables, this variable indicates the "Original working directory the app was executed from". I thought I could assume that

the_variable_I_would_need = ${hydra:runtime.cwd}/config/module

but by reading https://hydra.cc/docs/advanced/search_path/ it is possible to override the search path from a configuration parameter. Hence, in principle, I could run the script from any folder and then specify the search path, but this would break the assumption that my config folder is a subfolder of cwd.

So, how can I get the resolved path to the module_1.yaml file as a configuration parameter?

[IINemo]

I think the big problem of Hydra is that it does not even allow to get the config path from the code itself. You can get the config name and a list of sources, one of which was used to load this config file. I would suggest adding

1. Ability to get the loaded config path from the python code (e.g. populate the runtime)
2. Ability to make relative paths from the config file itself.