Update to lts-12.10, support ghc 8.4, and aeson 1.3.

Don't fully understand the need for the MonoLocalBinds language extension,
which was not needed before but now ghc complains if it's not included,
but I've tested it and it does work.

All the rest of the changes are straightforward AMP changes and dep
updates.

Removed fgl from stack.yaml because it seems that indirect dep no longer
needs to be specified for stack to build.

Added custom-setup stanza since stack now warns without one.

This commit was sponsored by Trenton Cronholm on Patreon.

2 files changed, 4 insertions, 2 deletions

diff --git a/Role/Developer.hs b/Role/Developer.hs
index d706a7a..abdad08 100644
--- a/Role/Developer.hs
+++ b/Role/Developer.hs
@@ -38,9 +38,10 @@ import qualified Data.Text as T
 import Data.List
 import Data.Maybe
 import Control.Monad
-import Data.Monoid
 import Data.Time.Clock.POSIX
 import Network.URI
+import Data.Monoid
+import Prelude
 
 run :: DeveloperOpts -> IO ()
 run = run' developer . debugUrl
diff --git a/Role/User.hs b/Role/User.hs
index 6ee1a42..6ec0302 100644
--- a/Role/User.hs
+++ b/Role/User.hs
@@ -30,11 +30,12 @@ import System.Exit
 import qualified Data.Text.IO as T
 import qualified Data.ByteString as B
 import Data.List.NonEmpty (NonEmpty(..), toList)
-import Data.Monoid
 import Data.Maybe
 import Data.Time.Clock.POSIX
 import System.IO
 import System.Environment
+import Data.Monoid
+import Prelude
 
 run :: UserOpts -> IO ExitCode
 run os = fromMaybe (ExitFailure 101) <$> connect