[All] Add support for [<InlineIfLambda>]

[MangelMaxime]

This PR add support for [<InlineIfLambda>]

1. I needed to store some more information on Fable.AST (once more 🙈)
2. We need to do the resolution ourself for retrieving the lambda body hopefully I covered the most common cases if not all.

Documentation about this feature is sparse

3. I add tests for Python, Dart, Rust and JavaScript to make sure I am not breaking the code at runtime
4. But the real tests for this features are under the integration project, because it allows us to validate the generated source code and not the runtime behaviour

[github-actions]

Python Type Checking Results (Pyright)

Metric	Value
Total errors	18
Files with errors	4
Excluded files	4
New errors	✅ No

Excluded files with errors (4 files)

These files have known type errors and are excluded from CI. Remove from pyrightconfig.ci.json as errors are fixed.

File	Errors	Status
temp/tests/Python/test_applicative.py	12	Excluded
temp/tests/Python/test_hash_set.py	3	Excluded
temp/tests/Python/test_nested_and_recursive_pattern.py	2	Excluded
temp/tests/Python/fable_modules/thoth_json_python/encode.py	1	Excluded

[MangelMaxime]

I believe the CI for JavaScript broke because the changes made to Fable.AST are not backward compatible.

[MangelMaxime]

Hello,

@Lanayx @shayanhabibi

With the release of Fable 5.0.0-rc.4 and more importantly Fable.AST 5.0.0-rc.3.

It is possible that you need to update your Fable plugin packages before we broke the binary compatibility.

[Lanayx]

@MangelMaxime Few changes were needed, but everything seems to work fine after updates. Just wonder - do plugins still have to live on .NET 6? I've tried moving to .NET 8, but it didn't work.

[MangelMaxime]

I don't see us forcing .NET 6.0 anywhere.

Looking more into the error:

Parsing HelloWorld.fsproj...
Couldn't build Oxpecker.Solid.FablePlugin: The index is outside the legal range.
count = 1, array.Length = 0 (Parameter 'count')
Couldn't build Oxpecker.Solid.FablePlugin: The index is outside the legal range.
count = 1, array.Length = 0 (Parameter 'count')
Project and references (9 source files) parsed in 2332ms

I have a feeling that something is broken in

Fable/src/Fable.Compiler/ProjectCracker.fs

Lines 133 to 148 in 2bd7776

	member _.BuildDll(normalizedDllPath: string) =
	if not (builtDlls.Contains(normalizedDllPath)) then
	let projDir =
	normalizedDllPath.Split('/')
	|> Array.rev
	|> Array.skipWhile (fun part -> part <> "bin")
	|> Array.skip 1
	|> Array.rev
	|> String.concat "/"
	let stdout =
	Process.runSyncWithOutput projDir "dotnet" [ "build"; "-c"; cliArgs.Configuration ]
	Log.always stdout
	builtDlls.Add(normalizedDllPath) |> ignore

I am trying to take a look at it

[MangelMaxime]

Ok, I found the issue:

/main/src/Oxpecker.Solid.FablePlugin/bin/Release/net6.0/Oxpecker.Solid.FablePlugin.dll

/main/src/Oxpecker.Solid.FablePlugin/obj/Release/net8.0/ref/Oxpecker.Solid.FablePlugin.dll

For some reason the path is different 😓

[MangelMaxime]

Ok, I have a working version locally.

I will see to do some cleanup and merge the code during the weekend.

[MangelMaxime]

@Lanayx

This will be fixed in the next release

[Lanayx]

Thank you!

[Lanayx]

@MangelMaxime Actually, when doing the change, I've noticed that genericArgs were changed to genericArg for tuple. I first thought that this is expected, but now I think that it isn't, so might be better fixed before stable release. (see update needed here)
The change was a result of those commits

[ncave]

@Lanayx You are correct, this was an unintentional typo. Fixed in #4436.