The sdk provides a base /usr/include path that should be checked when an including from the default paths. Without this, when a file is including something such as ```c #include <xkbcommon/xkbcommon.h> ``` that is provided by /snap/gnome-46-2404-sdk/current/usr/include, the compiler won't look for such path at all. There's no need to fallback to default `/usr/include` because such path is always included anyways by gcc (at least when that's compiled with such prefix). - [x] Have you followed the [guidelines for contributing](https://github.com/canonical/snapcraft/blob/main/CONTRIBUTING.md)? - [x] Have you signed the [CLA](http://www.ubuntu.com/legal/contributors/)? - [x] Have you successfully run `make lint`? - [x] Have you successfully run `make test`?