The package is downloaded from not desired repository

Description

The package is downloaded from not desired repository because it exists in two specified.

Repro steps

paket.dependencies

source https://www.nuget.org/api/v2
nuget Invoke-Build

source https://www.powershellgallery.com/api/v2
nuget SplitPipeline

The package SplitPipeline exists in both www.nuget.org and www.powershellgallery.com.
It it is the same tool but the packages are slightly different due to the different nature
and purpose of repositories.

The intent of the above paket.dependencies is to get one package from nuget and another
from powershellgallery. But both packages are installed from nuget.

Is this expected? If yes, is there a reliable way to get the second package
SplitPipeline from the exact repository?

NB: How to distinguish SplitPipeline packages:

• nuget package keeps all stuff in the subdirectory tools
• powershellgallery package keeps its files in the root directory

Expected behavior

(not necessarily, "expected", the current is probably by design)

SplitPipeline is installed from powershellgallery

Actual behavior

SplitPipeline is installed from nuget

Start with the paket.dependencies example and reproduce resolution when SplitPipeline exists in both listed repositories. Trace how Paket selects the source for each package and compare the installed layouts described in the issue. Done means the requested repository can be selected reliably, or the limitation and supported configuration are documented.