Migrating away from acid-state

[isovector]

Hi there,

I've got some open source budget at work, and would like to put it towards hackage-server. In particular, my thoughts were to replace the usage of acid-state with a postgres database. By my reading, this would allow us to:

1. use traditional database backup techniques
2. remove a huge amount of code around managing tarball backups
3. dramatically lower hackage-server's memory footprint
4. probably solve downloads counts stored inefficiently. #1276
5. remove the custom search engine implementation
6. allow for migrating data separately from shipping new binaries, which in turn will likely improve uptime

All of this is likely to help #1467 as well.

I just wanted to ensure there is an appetite for this work before I invest too much time. Happy to setup a call and discuss the finer details as well.

[phadej]

There's #1465 so you probably want to talk to the author of that PR.

[gbaz]

Yes, we're very open to this change, and coordination with the two authors of #1465 would be the way to go