@civodul Very nice feature! However, the first time I ran it, it worked fine, but when I re-ran it with the same package combination, I got the following error.

$ guix shell --container --emulate-fhs coreutils which -- which ls
guix shell: error: '--profile' cannot be used with package options

Changing the specified package combination or deleting files under $HOME/.cache/guix seems to work.