diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -3,7 +3,12 @@
 - support new criterion and GHC 7.8.3
 - small performance improvement to boxed unagi
 
-### 0.2
+### 0.2.0.0
 
 - implement a bounded variant (See issue #1)
 - address issue with stale tickets when running in GHCi
+
+### 0.2.0.1
+
+- conditionally use tryReadMVar (as before) when GHC >= 7.8.3
+- set proper CPP flags when running tests
diff --git a/src/Control/Concurrent/Chan/Unagi/Bounded/Internal.hs b/src/Control/Concurrent/Chan/Unagi/Bounded/Internal.hs
--- a/src/Control/Concurrent/Chan/Unagi/Bounded/Internal.hs
+++ b/src/Control/Concurrent/Chan/Unagi/Bounded/Internal.hs
@@ -23,7 +23,7 @@
 import Control.Monad
 import Control.Applicative
 import Data.Bits
-import Data.Maybe(fromMaybe)
+import Data.Maybe(fromMaybe,isJust)
 import Data.Typeable(Typeable)
 import GHC.Exts(inline)
 
@@ -455,16 +455,14 @@
 tryWriterCheckin (WriterCheckpoint v) = do
 -- On GHC > 7.8 we have an atomic `tryReadMVar`.  On earlier GHC readMVar is
 -- take+put, creating a race condition; in this case we use take+tryPut
--- ensuring the MVar stays full even if a reader's tryPut slips an () in:
+-- ensuring the MVar stays full even if a reader's tryPut slips an () in.
+-- HOWEVER, tryReadMVar is also buggy in GHC < 7.8.3
+--   https://ghc.haskell.org/trac/ghc/ticket/9148
     unblocked <- 
-#if __GLASGOW_HASKELL__ < 708
-      tryTakeMVar v >>= maybe (return False) ((True <$) . tryPutMVar v)
+#ifdef TRYREADMVAR
+      isJust <$> tryReadMVar v
 #else
       tryTakeMVar v >>= maybe (return False) ((True <$) . tryPutMVar v)
-      -- This is what we really want, unfortunately (and unfortunately for the
-      -- hours of my life I'll never get back) this is buggy in GHC < 7.8.3:
-      --   https://ghc.haskell.org/trac/ghc/ticket/9148
-    --isJust <$> tryReadMVar v
 #endif
     -- make sure we can see the reader's segment creation once we unblock...
     loadLoadBarrier
diff --git a/unagi-chan.cabal b/unagi-chan.cabal
--- a/unagi-chan.cabal
+++ b/unagi-chan.cabal
@@ -1,5 +1,5 @@
 name:                unagi-chan
-version:             0.2.0.0
+version:             0.2.0.1
 
 synopsis:            Fast and scalable concurrent queues for x86, with a Chan-like API
 
@@ -61,6 +61,9 @@
   if !arch(i386) && !arch(x86_64)
     cpp-options: -DNOT_x86
 
+  -- tryReadMVar is only available and non-broken on ghc >= 7.8.3
+  if impl(ghc >= 7.8.3)
+    cpp-options: -DTRYREADMVAR
   
 -- TODO
 --  - Do a benchmark of multiple queues running in parallel, to see if we are
@@ -106,6 +109,13 @@
                      , atomic-primops >= 0.6.0.5 && <= 0.6.0.6
                      , containers
   default-language:    Haskell2010
+  
+  -- These have to be copied from 'library' section too!
+  if !arch(i386) && !arch(x86_64)
+    cpp-options: -DNOT_x86
+ 
+  if impl(ghc >= 7.8.3)
+    cpp-options: -DTRYREADMVAR
 
 -- compare benchmarks with Chan, TQueue, and (eventually) lockfree-queue?
 flag compare-benchmarks