[wuming2]

GNU recutils should become the standard backend. Plain text db which has a powerful albeit simple records format, proper ids, enforces constraints, removes need of silly type conventions better defined in fields with %type, built in encryption. Foreign keys. Auto generated fields. Regex.

No one in their right of mind will want to manually edit the data store holding critical accounting data. 99% of the times should be ETL with the odd visual check for inspiration.

[euroderf]

A recutils clone in Go would be pleasantly hackable for whipping up some double-entry.

[wuming2]

The wheel is there already. Call librec from Lua and speed up your plain text accounting with LuaJIT.

[euroderf]

Lua oh noes. I pick a language and stick with it for years. Currently Go.