@hackage possibly0.0.0.1

type Possibly a = Either String a

Installation
In your cabal file:
Dependencies (1)
- base >=0.0.0.0 && <100
Dependents (5)
@hackage/columnar, @hackage/hs, @hackage/enum-utf8, @hackage/rg, @hackage/enum-text

A surprisingly useful type synonym for Either in which the Left diagnostic is a String, i.e, type Possibly a = Either String a