[Alpha] Paket no longer works with a project and a solution in the main folder

Description

In a project structure I use paket 7.0.0-alpha can not install packages anymore and fails while 6.2.1 does everything like it is expected. I use an extra run project in the root folder to enable usage of dotnet run <command> and a project solution.

Repro steps

Use paket 7.0.0-alpha016 and call paket install in a file structure like this:

- paket.dependencies
- run.fsproj
- Project.sln
- src/
    - Project.fsproj
    - paket.references

Simple example: https://github.com/NicoVIII/SimpleOptics

Expected behavior

Paket installs the packages like in 6.2.1

Actual behavior

Paket fails with this error:

Calling dotnet restore
MSBUILD : error MSB1011: Specify which project or solution file to use because this folder contains more than one project or solution file.
Total time taken: 0 milliseconds
Paket failed with
-> dotnet restore failed

Known workarounds

Use 6.2.1 instead of alpha version.

[forki]

fixed in 018

[NicoVIII]

It possibly is quite unorthodox, but I use dotnet run restore to restore. But the solution should also work, yes 🙈 Everything is in there.

EDIT I saw that approach in the SAFE-Template and tinkered with it a bit. But I would guess that people using this template would run into the same problem that I have. https://github.com/SAFE-Stack/SAFE-template/tree/master/Content/default