Writing SQL Drivers in Hare

TL;DR the source is at hare-sql, hare-sqlite, and hare-postgresql. I've been writing Hare modules for a while and I did initially make hare-sqlite with limited C bindings, but now I wanted to attempt to make much more robust SQL modules to not only support SQLite, but also PostgreSQL since those are the 2 most popular databases in open source. I have a lot of experience with Go's database/sql package and so I thought that was a good design to follow and to adapt it to Hare's idioms and language constraints. What I came up with was the following: hare-sql defines the interface and contains no drivers hare-sqlite implements the interface by way of SQLite's C bindings hare-postgresql also implements the interface and has all the wire protocol and authentication messages required to operate over a TCP socket sql::db, sql::rows, and sql::values Hare has no interfaces or generics, so a driver implements a table of function pointers and embeds a pointer to that table as the first field of…

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