Make it build with persistent

src/Vervis/Persist.hs

@@ -0,0 +1,45 @@
+{- This file is part of Vervis.
+ -
+ - Written in 2016 by fr33domlover <fr33domlover@riseup.net>.
+ -
+ - ♡ Copying is an act of love. Please copy, reuse and share.
+ -
+ - The author(s) have dedicated all copyright and related and neighboring
+ - rights to this software to the public domain worldwide. This software is
+ - distributed without any warranty.
+ -
+ - You should have received a copy of the CC0 Public Domain Dedication along
+ - with this software. If not, see
+ - <http://creativecommons.org/publicdomain/zero/1.0/>.
+ -}
+
+{-# LANGUAGE EmptyDataDecls             #-}
+{-# LANGUAGE FlexibleContexts           #-}
+{-# LANGUAGE GADTs                      #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE MultiParamTypeClasses      #-}
+{-# LANGUAGE OverloadedStrings          #-}
+{-# LANGUAGE QuasiQuotes                #-}
+{-# LANGUAGE TemplateHaskell            #-}
+{-# LANGUAGE TypeFamilies               #-}
+
+module Vervis.Persist
+    --(
+    --)
+where
+
+import Control.Monad.IO.Class (liftIO)
+import Database.Persist
+import Database.Persist.Sqlite
+import Database.Persist.TH
+
+share [mkPersist sqlSettings, mkMigrate "migrateAll"] [persistLowerCase|
+Person
+    name String
+    age Int Maybe
+    deriving Show
+BlogPost
+    title String
+    authorId PersonId
+    deriving Show
+|]

vervis.cabal

@@ -30,6 +30,7 @@ library
                      , Vervis.Git
                      , Vervis.Monad
                      , Vervis.Ops
+                     , Vervis.Persist
                      , Vervis.Types
   -- other-modules:       
   -- other-extensions:    
@@ -42,6 +43,9 @@ library
                      , json-state
                      , hashable
                      , hourglass
+                     , persistent
+                     , persistent-sqlite
+                     , persistent-template
                      , text                 >=1
                      , time-units
                      , transformers         >=0.4.2