Log Message:
sysutils/hs-co-log-core: import hs-co-log-core-0.3.2.0

This package provides core types and functions to work with the LogAction
data type which is both simple and powerful.

newtype LogAction m msg = LogAction
    { unLogAction :: msg -> m ()
    }

The ideas behind this package are described in the following blog post:

co-log: Composable Contravariant Combinatorial Comonadic Configurable
Convenient Logging
https://kowainik.github.io/posts/2018-09-25-co-log