wkfs is a pluggable "well-known filesystem" abstraction layer.
Instead of accessing files directly through the operating system using os.Open or os.Stat, code should use wkfs.Open or wkfs.Stat, which first try to intercept paths at well-known top-level directories representing previously-registered mount types, otherwise fall through to the operating system paths.
This repo contains some miscellaneous plugins for wkfs.