Switch cabal-tests to executable so it is always configured.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

cabal-testsuite/Test/Cabal/Script.hs

@@ -68,7 +68,7 @@ mkScriptEnv verbosity lbi = do
 -- non-Backpack.
 cabalTestsPackages :: LocalBuildInfo -> [(OpenUnitId, ModuleRenaming)]
 cabalTestsPackages lbi =
-    case componentNameCLBIs lbi (CTestName (mkUnqualComponentName "cabal-tests")) of
+    case componentNameCLBIs lbi (CExeName (mkUnqualComponentName "cabal-tests")) of
         [clbi] -> componentIncludes clbi
         _ -> error "cabalTestsPackages"
 

cabal-testsuite/cabal-testsuite.cabal

@@ -48,8 +48,7 @@ library
     build-depends: Win32
   default-language: Haskell2010
 
-test-suite cabal-tests
-  type: exitcode-stdio-1.0
+executable cabal-tests
   main-is: cabal-tests.hs
   hs-source-dirs: main
   ghc-options: -threaded -Wall -fwarn-tabs