superlu: use generic blas vendor on all platforms

pkgs/by-name/su/superlu/package.nix

@@ -45,11 +45,9 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     (lib.cmakeBool "BUILD_SHARED_LIBS" true)
     (lib.cmakeBool "enable_fortran" true)
-  ]
-  ++ lib.optionals stdenv.hostPlatform.isDarwin [
     # prevent cmake from using Accelerate, which causes tests to segfault
     # https://github.com/xiaoyeli/superlu/issues/155
-    "-DBLA_VENDOR=Generic"
+    (lib.cmakeFeature "BLA_VENDOR" "Generic")
   ];
 
   doCheck = true;