This library is available on Hackage and Stackage but you can also use its latest development version with stack:
In your stack.yaml file put the following in the extra-deps section
extra-deps:
- git: https://github.com/etorreborre/registry.git
commit: 04d506eb2dbb349255d7229b37d0ab4486b97025
Where the commit SHA is the latest version on master.
Then you can start writing your first components and wire them:
{-# LANGUAGE TypeApplications #-}
module RegistryTest where
import Data.Registry
import Protolude
data Logging = Logging {
info :: Text -> IO ()
}
data LoggingConfig = LoggingConfig { logIt :: Boolean }
newLogging :: Logging = Logging print
-- |
registry =
<: fun newLogging
<: val (LoggingConfig True)
logger = make @Logging registry
silentLogger = make @Logging (val (LoggingConfig False) <: registry)
testItAndPrintTheOutput :: IO ()
testItAndPrintTheOutput = info logger "hello world"
testItAndDontPrintAnything :: IO ()
testItAndDontPrintAnything = info logger "hello world"