fix build on ghc-7.10.3

1 files changed, 11 insertions, 8 deletions

diff --git a/dht-client.cabal b/dht-client.cabal
index 58024840..2b9026ad 100644
--- a/dht-client.cabal
+++ b/dht-client.cabal
@@ -6,9 +6,9 @@ author:                Joe Crayne
 maintainer:            Joe Crayne
 copyright:             (c) 2017 Joe Crayne, (c) 2013, Sam Truzjan
 category:              Network
-build-type:            Simple
+build-type:            Custom
 cabal-version:         >= 1.10
-tested-with:           GHC == 8.0.2
+tested-with:           GHC == 8.0.2, GHC == 7.10.3
 homepage:              https://github.com/cobit/bittorrent
 bug-reports:           https://github.com/cobit/bittorrent/issues
 synopsis:              BitTorrent DHT protocol implementation.
@@ -44,9 +44,9 @@ flag builder
   description: Use older bytestring package and bytestring-builder.
   default: False
 
-flag aeson
-  description: Use aeson for pretty-printing bencoded data.
-  default: True
+-- flag aeson
+--   description: Use aeson for pretty-printing bencoded data.
+--   default: True
 
 flag thread-debug
   description: Add instrumentation to threads.
@@ -132,6 +132,9 @@ library
                     , transformers-base
                     , mtl
 
+  if impl(ghc < 8)
+      Build-depends:  transformers
+
   if flag(network-uri)
       Build-depends:  network      >= 2.6
                     , network-uri  >= 2.6
@@ -154,9 +157,9 @@ library
 
   C-sources:           cbits/cryptonite_xsalsa.c, cbits/cryptonite_salsa.c
 
-  if flag(aeson)
-    build-depends: aeson, aeson-pretty, unordered-containers, vector
-    cpp-options:   -DBENCODE_AESON
+  -- if flag(aeson)
+  build-depends: aeson, aeson-pretty, unordered-containers, vector
+  cpp-options:   -DBENCODE_AESON
   if flag(thread-debug)
     exposed-modules: Control.Concurrent.Lifted.Instrument
                      Control.Concurrent.Async.Lifted.Instrument