Dropping support for older runtimes about logging-log4net HOT 6 OPEN

I think if we do this, it's probably a good idea to do a major version bump, so that no-one requiring an older version would accidentally install a newer one with what they believe to be a small upgrade; I did the same thing with my libraries when I dropped support for .net 4.5.2

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Is multitargeting at least to the latest supported .NET runtimes still an option?

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I would still want to maintain a net462 package (and whatever comes after that in NETFX-world's support matrix - right now, that's the lowest version of .net framework that is supported by Microsoft)

Technically, you can use netstandard packages from net462 hosts, but doing so adds a bunch of overhead for the host as the entire netstandard runtime has to be shimmed out - go ahead and try it, you'll see a ton of compatibility packages coming down. And there's no benefit from our side in dropping netfx as we can stub out the netfx api (4.6.2+) from Mono when building on linux (reminder: this doesn't mean the output is linked to Mono, it just means that during build, the compiler is able to find runtime apis from Mono, to pass the build, and later externs them)

The versions I'd like to drop support for are:

• net20
• net35
• net40
• net40-client
• net45

These can be a mission to get working, even on a windows host (and most especially the client profile targets - I think there used to be a net35-client target too 😢 ) - I've had times when I could just install and use, and another time where I literally fought for ages and gave up, and it just so happened I could do so after a complete OS refresh. Installation would just randomly fail, or the OS would block it, saying I already had that version of .net framework.

And they're never going to work on non-windows hosts, so expecting contributions from people running other platforms is fantasy - people can't effectively contribute if they can't even build the project ):

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btw targeting netstandard & .net 4.6.2 is trivial with the Mono shim - it's how I do all my personal packages where I expect them to be used on netfx, eg NExpect, PeanutButter.*.

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+1 from me.
I think supporting net462 & netstandard2.0 is enough for everyone who is able and willing to upgrade their depencies to newer versions.

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I don't think so.
When we support net462 & netstandard2.0, you can use the package from every supported target framework.

Do you have a use case in mind where this would not work?

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