test "`readlink_base "$profile"`" = "$profile-1-link"
test -x "$profile/bin/guile" && ! test -x "$profile/bin/make"
+ # Check that the first generation is the current one.
+ test "`guix package -p "$profile" -l 1 | cut -f3 | head -n1`" = "(current)"
+
# Roll-back to generation 0, and install---all at once.
guix package --bootstrap -p "$profile" --roll-back -i guile-bootstrap
test "`readlink_base "$profile"`" = "$profile-1-link"