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a1aed2a716
Some haskell code starts silently hanging when not built with a threaded runtime, so let’s assume people using `writeHaskell` don’t care about micro-optimizations like this and do the expected thing. Some architectures don’t support a threaded runtime, for these we provide the `threadedRuntime` option to turn it off (it should fail at build time in that case, easy to detect). If somebody already passed `"-threaded"` before via ghcArgs, this will not add the flag a second time. Thus it’s backward-compatible in this regard. I tested out both branches (with `-threaded` set and not set before), on an example I had where the runtime would hang when not compiled with `-threaded`. |
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