New project from EXF template fails to build in Visual Studio

Error: /Users/sam.williams/Projects/SqueakyApp/SqueakyApp/FSC: Error FS0193: The module/namespace 'Microsoft.FSharp.Core' from compilation unit 'FSharp.Core' did not contain the namespace, module or type 'voption1’ (FS0193) (SqueakyApp)`

Occurs in all projects - Core, Droid and iOS

Expected: all projects build successfully

Steps: dotnet new elmish-forms-app -lang F# -n SqueakyApp create an sln file and add the three projects open sln file in Visual Studio for Mac build project (I used DEBUG | AnyCPU as the configuration)

also tried changed FSharp.Core version in the .NET Standard project using both 4.3.4 and 4.5.0. The .NET Standard project still fails to build. also tried adding the fsc.props file

Environment:

=== Visual Studio Professional 2017 for Mac ===

Version 7.5.3 (build 7)
Installation UUID: 82dffde3-8fbe-456a-90d8-d8692da1f7d9
Runtime:
	Mono 5.10.1.57 (2017-12/ea8a24b1bbf) (64-bit)
	GTK+ 2.24.23 (Raleigh theme)
	Xamarin.Mac 4.4.1.178 (master / eeaeb7e6)

	Package version: 510010057

=== NuGet ===

Version: 4.3.1.4445

=== .NET Core ===

Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
	2.1.0
	2.0.5
	2.0.0
	1.1.2
	1.1.1
	1.1.0
	1.0.5
	1.0.4
SDK: /usr/local/share/dotnet/sdk/2.1.300/Sdks
SDK Versions:
	2.1.300
	2.1.4
	2.0.0
	1.0.4
	1.0.1
	1.0.0-preview2-1-003177
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.10.1/lib/mono/msbuild/15.0/bin/Sdks

=== Xamarin.Profiler ===

Version: 1.6.2
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Xamarin.Android ===

Version: 8.3.3.2 (Visual Studio Professional)
Android SDK: /Users/sam.williams/Library/Developer/Xamarin/android-sdk-macosx
	Supported Android versions:
		4.0.3 (API level 15)
		5.1   (API level 22)
		6.0   (API level 23)
		7.1   (API level 25)
		8.0   (API level 26)
		8.1   (API level 27)

SDK Tools Version: 26.1.1
SDK Platform Tools Version: 27.0.1
SDK Build Tools Version: 27.0.3

Java SDK: /usr
java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

=== Apple Developer Tools ===

Xcode 9.3.1 (14154.1)
Build 9E501

=== Xamarin.Mac ===

Version: 4.4.1.193 (Visual Studio Professional)

=== Xamarin.iOS ===

Version: 11.12.0.4 (Visual Studio Professional)
Hash: 64fece5f
Branch: d15-7
Build date: 2018-05-29 20:00:44-0400

=== Xamarin Inspector ===

Version: 1.4.0
Hash: b3f92f9
Branch: master
Build date: Fri, 19 Jan 2018 22:00:34 GMT
Client compatibility: 1

=== Build Information ===

Release ID: 705030007
Git revision: 13cecd02aceddf29a1ed57b86f81c02994df1483
Build date: 2018-06-14 15:48:08-04
Xamarin addins: 7065de97cf22c9038fdc39dd627f2c30790fd8af
Build lane: monodevelop-lion-d15-7

=== Operating System ===

Mac OS X 10.13.3
Darwin 17.4.0 Darwin Kernel Version 17.4.0
    Sun Dec 17 09:19:54 PST 2017
    root:xnu-4570.41.2~1/RELEASE_X86_64 x86_64

=== Enabled user installed addins ===

Straight8's SpecFlow Intergration 1.11.0.0
Internet of Things (IoT) development (Preview) 7.5

[nosami]

@willsam100 : ugh, yes - this is a known issue in VSMac and was recently fixed

[willsam100]

so i have made some progress, I believe the issue is with VS4Mac

I cleared the packages (and bin + obj folder). then ran nuget restore and msbuild /v:d from terminal and the build passes. log files attached.

however, when I delete the packages (and bin + obj folder) and then open the sln file in VS4Mac it seems the nuget restore fails. I have attached the logs for that and also a screenshot. The screenshot shows FSharp.Core 4.5.0 as the required version in the proj file, however VS4Mac has restored 4.2.3 (the exact version that VS4Mac restores each time is non-deterministic, usually it downloads 4.3.4 which is still incorrect. it never seems to restore verison 4.5.0) which can be seen in the solution explorer in the left.

running the commands from terminal first, and then opening the sln in VS4Mac results in the build working from VS4Mac, and I can even run the Droid project in an emulator.

build.log restore.log vs4macRestore.log