Changing nuget uri from http to https in paket.dependencies causes error. #1820

Description

I changed from source https://www.nuget.org/api/v2/ to source http://www.nuget.org/api/v2/
in paket.dependencies and it caused install and restore to fail with:
The NuGet source http://www.nuget.org/api/v2 for package NUnit was not found in the paket.dependencies file

Repro steps

1. Extract NugetSourceWasNotFound.zip
2. Run paket.exe restore or paket.exe install

This may be due to me sitting behind a proxy, not sure it repros everywhere. Will test when I get home.

Known workarounds

Manually change the paket lock file to remote: https://www.nuget.org/api/v2

Related information

• Win 7
• Behind a proxy.
• Latest paket.
• .NET