Backup your notmuch tags:
$ cd
- $ notmuch dump notmuch-dump-b4chert
+ $ notmuch dump --output=notmuch-dump-b4chert
Move away your old database:
Restore your tags:
- $ notmuch restore notmuch-dump-b4chert
+ $ notmuch restore --input=notmuch-dump-b4chert
Check whether you are on chert now:
Backup your database:
$ cd
- $ notmuch dump notmuch-dump-b4compact
+ $ notmuch dump --output=notmuch-dump-b4compact
Compact it: