How to ignore nested pixi.tomls?

[spacecaterpillar]

When including multiple packages to build in a workspace, if you happen to run a pixi command from a sub-directory that contains a pixi.toml file, then it will use that file instead of the one at the root of the project. It makes some sense, but now it is also possible for people to unintentionally add a nested .pixi folder in the subdirectory. It feels like there are some things that you likely don't want to do with sub-pixi.toml files. Is there some way that we can mark those as "child" pixi.toml files. So for example, it'd be nice to run pixi install anywhere, and it will do the right thing for the whole workspace, rather than installing an undesired .pixi folder within some subpackage.