imp: cli: Hledger.Cli.Script convenience import for scripts

Hledger.Cli.Script is a convenient prelude for use in scripts,
reducing import boilerplate. It currently re-exports:

Control.Monad
Data.Either
Data.List
Data.Maybe
Data.Ord
Data.Time
Text.Printf hiding (formatString)
Data.Text (Text, pack, unpack)
Safe hiding (at)
System.Directory
System.Environment
System.Exit
System.FilePath
System.Process
Hledger
Hledger.Cli
Hledger.Cli.Main (argsToCliOpts)

but not (much of) Data.Text or Data.Text.IO, as those
need to be imported qualified.

hledger/Hledger/Cli/Script.hs

@@ -0,0 +1,33 @@
+{-|
+A convenient module to import in hledger scripts, 
+aiming to provide the most useful imports and reduce boilerplate.
+|-}
+
+{-# LANGUAGE PackageImports #-}
+
+module Hledger.Cli.Script
+( module Script
+) 
+where
+
+import Control.Monad as Script
+import Data.Either as Script
+import Data.List as Script
+import Data.Maybe as Script
+import Data.Ord as Script
+-- import Data.String.QQ (s)  -- https://github.com/audreyt/string-qq/pull/3
+import Data.Time as Script
+import Text.Printf as Script hiding (formatString)
+import "text" Data.Text as Script (Text, pack, unpack)
+  -- can't re-export much of Data.Text & Data.Text.IO, they need to be qualified
+import Safe as Script hiding (at)
+-- import qualified System.Console.CmdArgs.Explicit as Script
+import System.Directory as Script
+import System.Environment as Script
+import System.Exit as Script
+import System.FilePath as Script
+import System.Process as Script
+
+import Hledger as Script
+import Hledger.Cli as Script
+import Hledger.Cli.Main as Script (argsToCliOpts)

hledger/package.yaml

@@ -146,6 +146,7 @@ library:
   - Hledger.Cli.DocFiles
   - Hledger.Cli.Utils
   - Hledger.Cli.Anon
+  - Hledger.Cli.Script
   - Hledger.Cli.Version
   - Hledger.Cli.Commands
   - Hledger.Cli.Commands.Accounts