Fix coverage test for cross compiling

Author: hamishmack

test/coverage/default.nix

@@ -23,6 +23,7 @@ let
   stackProj = (stackProject' projectArgs);
 
   exeExt = stdenv.hostPlatform.extensions.executable;
+  crossSuffix = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) "-${stdenv.hostPlatform.config}";
 
 in recurseIntoAttrs ({
   # Does not work on ghcjs because it needs zlib.
@@ -89,7 +90,7 @@ in recurseIntoAttrs ({
         dirExists "$pkga_basedir/html/pkga-0.1.0.0"
   
         pkgb_basedir="${project.hsPkgs.pkgb.coverageReport}/share/hpc/vanilla"
-        testTix="$pkgb_basedir/tix/pkgb-test-tests-0.1.0.0-check/tests${exeExt}.tix"
+        testTix="$pkgb_basedir/tix/pkgb-test-tests${crossSuffix}-0.1.0.0-check${crossSuffix}/tests${exeExt}.tix"
         libTix="$pkgb_basedir/tix/pkgb-0.1.0.0/pkgb-0.1.0.0.tix"
         fileExistsNonEmpty "$testTix"
         fileExistsNonEmpty "$libTix"
@@ -116,8 +117,8 @@ in recurseIntoAttrs ({
         dirExists "$project_basedir/tix/pkga-0.1.0.0"
         dirExists "$project_basedir/tix/pkgb-0.1.0.0"
         fileExistsNonEmpty "$project_basedir/tix/pkgb-0.1.0.0/pkgb-0.1.0.0.tix"
-        dirExists "$project_basedir/tix/pkgb-test-tests-0.1.0.0-check"
-        fileExistsNonEmpty "$project_basedir/tix/pkgb-test-tests-0.1.0.0-check/tests${exeExt}.tix"
+        dirExists "$project_basedir/tix/pkgb-test-tests${crossSuffix}-0.1.0.0-check${crossSuffix}"
+        fileExistsNonEmpty "$project_basedir/tix/pkgb-test-tests${crossSuffix}-0.1.0.0-check${crossSuffix}/tests${exeExt}.tix"
       '') ([cabalProj] ++ optional (compiler-nix-name == "ghc865") stackProj))}
 
       touch $out