<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/124719>124719</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-tidy support for `InheritConfigPath`
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang-tidy
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          thorsten-klein
      </td>
    </tr>
</table>

<pre>
    We have following project setup
```
└── shared_configs
    └── .clang-tidy
└── project1
    └── .clang-tidy
└── project2
└── project3
└── .clang-tidy -> shared_configs/.clang-tidy (symlink)
```

**Explanation**:
In the shared_configs directory we have a general .clang-tidy file which we want to share across all our repositories (git submodule).
By creating a symlink in the repository root pointing to `shared_configs/.clang-tidy` clang-tidy takes the correct config file.

Some projects might deviate from the official config. 
For example projects they deactivate some checks via their individual config file `project1/.clang-tidy`:

```
# Inherit from general config
InheritParentConfig: true

# Disable some checks fpr this project
Checks: '-fuchsia-overloaded-operator'
```


**Feature Request**:
Why is only inheriting from a parent config allowed?
What we miss is the possibility to inherit from a specific config file.

So in other words we would like to have a single-source-of-truth for repository-wide deviations.
So we want to be able to inherit from the general config and additionally deactivate some checks.

Therefore I suggest some new option `InheritConfigPath` (which is analog to the already existing option `InheritParentConfig`).

With this option we could remove the symlink to `shared_configs/.clang-tidy` and each individual `projectX/.clang-tidy` config. 
Instead we can use following config file at a central place (git root) = single point of truth for repository-wide deviations:

```
# Inherit from general config
InheritConfigPath: shared_configs/.clang-tidy

# Disable some checks repository-wide
Checks: '-fuchsia-overloaded-operator'
```
</pre>
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