Index: b/integer-roots.cabal
===================================================================
--- a/integer-roots.cabal
+++ b/integer-roots.cabal
@@ -65,6 +65,7 @@ test-suite integer-roots-tests
   ghc-options: -Wall -Widentities -Wcompat
 
 test-suite integer-roots-doctests
+  buildable: False
   type: exitcode-stdio-1.0
   main-is: Doctest.hs
   hs-source-dirs: test-suite
