1 files changed, 12 insertions, 2 deletions

diff --git a/krpc.cabal b/krpc.cabal
index c565bd2a..66c08ccb 100644
--- a/krpc.cabal
+++ b/krpc.cabal
@@ -34,6 +34,11 @@ source-repository this
   branch:              master
   tag:                 v0.6.1.0
 
+flag builder
+  description: Use older bytestring package and bytestring-builder.
+  default: False
+
+
 library
   default-language:    Haskell2010
   default-extensions:  PatternGuards
@@ -44,7 +49,6 @@ library
                        Network.KRPC.Method
                        Network.KRPC.Manager
   build-depends:       base          == 4.*
-                     , bytestring    >= 0.10
                      , text          >= 0.11
                      , data-default-class
                      , lifted-base   >= 0.1.1
@@ -54,7 +58,13 @@ library
                      , monad-logger  >= 0.3
                      , bencoding     >= 0.4.3
                      , network       >= 2.3
+                     , cereal
                      , containers
+  if flag(builder)
+    build-depends: bytestring >= 0.9, bytestring-builder
+  else
+    build-depends: bytestring >= 0.10
+
   if impl(ghc < 7.6)
     build-depends:     ghc-prim
   ghc-options:         -Wall
@@ -89,4 +99,4 @@ benchmark bench
                      , monad-logger
                      , criterion
                      , krpc
-  ghc-options:         -O2 -fforce-recomp
\ No newline at end of file
+  ghc-options:         -O2 -fforce-recomp