Paket 4: Paket.Restore.targets mess up dependencies for `dotnet pack`

Description

potnet pack incorrectly calculate NuGet package dependencies after adding Paket.Restore.targets into fsproj.

Repro steps

Here https://github.com/fsprojects/FsUnit/tree/master everything works as expected.

• build.fsx uses paket.template to create FsUnit.nuget for net45
• then it uses dotnet pack to create package for netstandard
• note that both project files in the same folder
• then script uses dotnet-mergenupkg to merge two packages into one

Resulting package has correct dependencies:

Execute following steps to reproduce the bug (or use branch from https://github.com/fsprojects/FsUnit/pull/104)

1. call paket install .paket\paket.exe install
2. prev step update paket to version 4 and add Paket.Restore.targets to all netstandard and netcore projects (see https://github.com/fsprojects/FsUnit/pull/104)
3. after that execute build.cmd BuildPackage
4. resulting nuget package bin\FsUnit.3.0.0.nupkg will have very strange dependencies

Expected behavior

Only 3 dependencies fro .NET Standard 1.6 framework:

• .NET Framework 1.6.*
• FSharp.Core 4.1.*
• NUnit 3.6.*

Actual behavior

Direct dependencies to lots of netframework packages

Known workarounds

No

[forki]

Ok paket 4.1.3 works with dotnet cli 2.0.0-preview1-005683

yay!

[enricosada]

Not having NETStandard.Library is not correct. But is added by default by normal template so is not an urgent bugfix afaik