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You can just use systemd for this. Open the FD in systemd and then pass it into the process.

The less I rely on the operating system environment, the best it is. Go provides static binaries, easy to deploy. I don't want to get hooked to systemd. (even more if my server can handle the use case with a few lines of code.)

Notice how the discussion is full of edge-cases which this code doesn't handle? That's the argument for letting the operating system handle it unless this is such a key part of what you do that it's worth taking on that expense personally.

> Notice how the discussion is full of edge-cases which this code doesn't handle?

Can you point to a single unhandled edge case mentioned so far in this discussion? The only possible one I see is finnh's complaint that it doesn't support changing arguments, but that seems more like a missing feature (which doesn't seem that important to me) than an edge case.

The logic needed to correctly implement this is quite minimal, and implementing it yourself both spares you a rather heavy dependency and gives you more flexibility.

For the argument, you can change them, i answered there:

https://news.ycombinator.com/item?id=8773176

So far, I haven't encountered any annoying edge case I can't handle, so if you have examples, I'll be glad to discuss them with you

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