Could there be a way to analyse the input files without a compilation pass first?

[7sharp9]

Either PortaCode, or run on nuget restore are potentials.

Also we could type check the generated code as a debugging aid, not sure this is needed as pre-build step generates the code for the IDE to show errors.

[Krzysztof-Cieslak]

So I think there are 2 levels here:

• UsePortaCode or some crazy analyzer using FSharp.Analyzers.SDK to provide real-time errors from the analyzers by executing plugin in memory and typechecking output (difficult to do)
• Add possibility to output errors/warnings from the plugin - and report them as normal MsBuild warnings/errors. This is easier to do but won't be "real-time"

[7sharp9]

Probably just leave this, if someone wants to check generated code they can alway add it themselves.