Is it possible to add more metadata to the benchmarks?

I'm using ASV for a C++ project, so I'm thinking in particular of compiler version. This is not specified as a dependency, so I would just like to pick it up from the command line.

Also, I'm wondering if it's possible to add the versions of the Conda packages that I do use as dependencies, but that I don't pin specifically, i.e. I'm just using empty strings to download latest versions, but would still like to record which versions I'm using.