Perfect, thanks! I will try switching over to use unliftio. Assuming it meets my needs --- and I see no reason why it won't --- I withdraw my intention to take over cautious-file.

-Brent

On Thu, Feb 13, 2020 at 10:43 AM Niklas Hambüchen <mail@nh2.me> wrote:

Tangentially, note that `cautious-file` has drawbacks:

* It is not async-exception safe and may leak file descriptors. It uses `handleToFd` without proper exception handling (`bracket`).
* It does not `fsync` the directory in which the file is, meaning that you may still experience data loss on computer crashes.

`unliftio` provides actively maintained versions of most of what `cautious-file` does, addresses those drawbacks and is well-tested against crashes:

https://hackage.haskell.org/package/unliftio-0.2.12/docs/UnliftIO-IO-File.html

For example, `writeBinaryFileDurableAtomic`.

Niklas