I recently had trouble with an nvidia driver that had a specific version number. My old driver had a version number I simply forgot. It came out, that the new driver was installed cleanly by portage but had much bugs implermented by the vendor nvidia. Since I forgot the old version-number of the driver, it was difficult to get a stable graphics driver installed. I would it find very good if portage would provide an emerge --return package option for such cases, which unmerges the new and installs the old, last used version of the package (similarly like prelink has a return option) So emerges would be generally safer, since the last system state could easily be recovered. Such an option would only require a book-keeping index in a file. Reproducible: Always Steps to Reproduce: 1. 2. 3.
*** This bug has been marked as a duplicate of 40127 ***
