The error you're getting is because NuGet console can't find the Cake package among the configured feeds on the machine.
You can test this theory by changing the following line in build.ps
$NuGetOutput = Invoke-Expression "&`"$NUGET_EXE`" install -ExcludeVersion -OutputDirectory `"$TOOLS_DIR`""
To
$NuGetOutput = Invoke-Expression "&`"$NUGET_EXE`" install -ExcludeVersion -OutputDirectory `"$TOOLS_DIR`" -Source `"https://www.nuget.org/api/v2`""
If that works your colleagues machine likely lacks or have the standard nuget.org feeds disabled on his machine.
You can list which sources you have configured by using the NuGet console like this (if you don't have nuget console in path it should be avail in the repo tools folder)
nuget sources list
It should then list v2 and/or v3 feed for nuget.org and they should have the text [Enabled]
after them like below
Registered Sources:
1. https://www.nuget.org/api/v2/ [Enabled]
https://www.nuget.org/api/v2/
2. https://api.nuget.org/v3/index.json [Enabled]
https://api.nuget.org/v3/index.json
If they're listed but disabled you can enable them by typing
nuget source enable -Name https://www.nuget.org/api/v2/
Or
nuget source enable -Name https://api.nuget.org/v3/index.json
Depending on which feed you have registered & disabled, if the sources are missing then you can add them by typing
nuget sources add -Name https://www.nuget.org/api/v2/ -Source https://www.nuget.org/api/v2/
Settings are stored in %AppData%\NuGet\NuGet.config
so you could manually edit that file, to make sure everyone uses same sources in team you could add a NuGet.config
to the root of the repository as nuget tries to find config in path and then falls back to app data.
nuget sources list
on devs machine and nuget.org was disabled. Enabling it worked like a charm, thanks! !disabled – Stranglehold