Having just received my Mix 2, I managed to get Gapps installed without problems. I thought I would provided a quick and dirty guide to help anyone struggling. If this proves popular I will refine with images and additional content.
Step 1. Download the Gapps from this location and extract. !!! I cannot post the direct link... just google GappsForMI5c.zip
Step 2. Perform a backup on the Mix 2 (Settings-> Additional Settings -> Backup and Reset -> Local Backups)
Step 3. Connect phone to computer and transfer the Gapps files to Storage/MIUI/backup/allbackup
(I had to make another folder named similar to the backup we just made, and then put the Gapps into this new folder)
Step 4. Restart phone
Step 5. Go to Backup and Reset -> Local Backups and restore the backup with the Gapps.
All done, has worked perfectly for me. I hope this helps.
Step 1. Download the Gapps from this location and extract. !!! I cannot post the direct link... just google GappsForMI5c.zip
Step 2. Perform a backup on the Mix 2 (Settings-> Additional Settings -> Backup and Reset -> Local Backups)
Step 3. Connect phone to computer and transfer the Gapps files to Storage/MIUI/backup/allbackup
(I had to make another folder named similar to the backup we just made, and then put the Gapps into this new folder)
Step 4. Restart phone
Step 5. Go to Backup and Reset -> Local Backups and restore the backup with the Gapps.
All done, has worked perfectly for me. I hope this helps.