App

Subsystem	Library
Parsers	megaparsec
Tests	tasty
CLI	optparse-applicative (generic?)
TUI	brick
Web-based GUI	threepennygui
WebApp	scotty
embedded Lua	hslua

CLI

`-e EXPR`

`-i LIB`

Infra

Nix

Docker

CI on different OSes

Template language

: ts = %time{YY-MM-DD}
mv %f %i{03}-%fne-%ts

awk(1)

`@include`

`$0`, ~$1~…