Suppose there is a parameters.yml:
parameters:
my_type: foo

Then it is not possible to do this in config.yml:

imports:
- { resource: parameters.yml }
- { resource: %kernel.root_dir%/config/%my_type%/security.yml }

I'm not sure but I guess the problem is that in the load() method of the Yaml(or whatever)FileLoader the parameters are added to the container after all files are imported.

I was hoping that I can immediatly use the parameters from parameters.yml right after it is imported.

I thought I can put something after $this->import() in parseImports() but it seems a bit more complicated.. so I hope someone can have a look at it.

What I need is a way to load different config files depending on parameter(s) in parameters.yml. So different installations of the product can use different predefined configurations without further configuration.

My current idea for a workaround is to parse parameters.yml in the AppKernel->registerContainerConfiguration() before loading the configuration and load the matching files from config/%my_type/config.yml. But this not really nice.