F# support in preview2

[enricosada]

.NET Core SDK preview1 and F# works amazing ootb on all supported os (win/osx/ubuntu/docker) 🎉 thx @dotnet/cli team!

An example: Suave working on preview1 in win/osx/ubuntu/docker, suave is the web fw (library :P) used a lot by f# community

I'd like too track current issues for preview2 and fix some annoyances in preview1, so ootb should work like or better than preview1

Some issue are of this repo, other are referenced from dotnet/netcorecli-fsc but are needed for a good ootb experience

• 🚫 preview2 build doesnt work, ref Preview2 fails netcorecli-fsc#12
• remove compile-fsc from dotnet/cli repo, and use package built from dotnet/netcorecli-fsc, pr new home for dotnet-compile-fsc cli#2638
• enable portable pdb as default (like c#)?
• f# project shouldnt require a nuget.config, for sure not with <clear/>
• remove nuget.config from dotnet-new templates
• simplify compile-fsc tools references, probabily some of import are useless
• support serviceable attribute in compile-fsc
• same dotnet-new templates as c# ( lib prepare dotnet-new for f# in preview2 cli#3627 , xunit TODO, web TODO = suave? )
• check f# core and compiler package deps, no downgrade warning (ref Blank F# project has lots of package downgrade warnings #6385 )
• f# in dotnet homepage tutorial. in preview1 f# was ok, but there was no --lang f# to help new users in tutorial, or in homepage about "f# support is beta" at least

@blackdwarf @brthor i am missing something new of preview2 from this list?

/cc @KevinRansom @dsyme @cartermp

[brthor]

The list looks good to me 👍

Will FSC core nuget packages get published to nuget, or how will you remove the need for nuget.config?

[cartermp]

Will FSC core nuget packages get published to nuget, or how will you remove the need for nuget.config?

@KevinRansom Can we get the last stable build published to NuGet for Preview 2? I believe we chatted about this at some point.

[enricosada]

@brthor Yes, as i speak tuesday with @KevinRansom at visualfsharp standup and he is going to publish the version of compiler/fsharp.core package to nuget.org as prerelease.
compile-fsc too in nuget.org, but built from dotnet/netcorecli-fsc repo, so we can update easy

[brthor]

Very nice 👍

[enricosada]

sry @cartermp didint see you comment before posting.

@cartermp i'll check if publising a -preview2 version of compile-fsc tool break existing preview1 (the deps ref was 1.0.0.* in prevew1 😢 ).

With preview1 use a nuget.config was really annoying, a lot, because use <clear/> and i fear of break preview1 user if we publish in fsharp-daily feed, because it's used by default.
i think only dev should use fsharp-daily, now netcore support is stable

[enricosada]

@brthor preview2 expected release date is? i hope to at least before the code freeze:

• fix bug and publish a package fron netcorecli-fsc repo .
• fix dotnet new (adding lib template if possibile, is really useful as example)

[enricosada]

@brthor i updated pr dotnet/cli#3627 to address some important points, so f# should be ready for preview2 release.
we can fix compiler bug later these days (and publish the fixed package), but at least defaults for dotnet new are good.
it's really important for OOTB experience, with preview1 was nice

[blackdwarf]

@enricosada what is the status of this?

[enricosada]

i think can be closed, preview2 works with f#, and fixed templates for dotnet new --lang f# are already committed.
There are getting started docs and wiki/faq

Thx a lot @blackdwarf @brthor @piotrpMSFT for support!

cya soon, i'll check the msbuild support there too for fsproj :D