Unable to use Microsoft.AspNetCore.App/All metapackage with FAKE

[kblohm]

Description

I can not reference the Microsoft.AspNetCore.App metapackage and use it in my build.fsx when running it with FAKE. I can however run the script in FSI.

Repro steps

1. Use the following paket.dependencies

// [ FAKE GROUP ]
group Build
    source https://api.nuget.org/v3/index.json
    nuget Fake.Core.Target
    nuget Microsoft.AspNetCore.App

2. Use the following build.fsx

#load ".fake/build.fsx/intellisense.fsx"

// let execContext = Fake.Core.Context.FakeExecutionContext.Create false "build.fsx" []
// Fake.Core.Context.setExecutionContext (Fake.Core.Context.RuntimeContext.Fake execContext)
open Fake.Core
open Microsoft.AspNetCore.Builder
open Microsoft.AspNetCore.Hosting

Target.create "Dummy" (fun _ ->
    ()
)
Target.runOrDefault "Dummy"

run fake build. This does not seem to work. If you uncomment the fakeContext-stuff and run it in FSI, everything is fine. Is this just me or is this a bug?

Workaround

Reference packages directly

// [ FAKE GROUP ]
group Build
    source https://api.nuget.org/v3/index.json
    nuget Fake.Core.Target
    nuget Microsoft.AspNetCore
    nuget Microsoft.AspNetCore.Hosting

[matthid]

Another instance of:

• Broken restictions in paket.lock Paket#3082 (comment)
• Transitive dependencies have wrong restriction Paket#3232

Basically fake uses netstandard2.0 as framework moniker and not netcoreapp - maybe we can indeed change that but I have no idea what other side-effects that has.

[kblohm]

Ahh, that is inconvenient. So the workaround is pretty much what i am doing now, at least until we can maybe think of something more clever?

[matthid]

No it seems to be by design that you can explicitly not use that package in a library setting (which even makes sense) and currently we consider the script to be a "library" loaded by the fake runtime (which is technically what happens)

[matthid]

Or in other words I'm not quite ready to do hacks in paket or fake just for that package ;)

[kblohm]

I read the other issues, that makes sense. Thanks!