Ever wanted to push a package to NuGet.org or another feed during a build on MyGet Build Services? Affraid of checking in the API key to source control just to be able to do that? Well here’s a little trick that will help you do that without spilling secrets.

When we implemented support for NuGet Package Restore, we’ve also added support for transfering package source credentials to the build server in a safe way. From the Package Sources tab on your feed, you can use the Add package source button to specify all details about a feed that should be available during build, both for consuming and pushing packages. You can add any feed you want: a Chocolatey feed, a TeamCity feed or another MyGet feed.

After specifying an API key through MyGet, you can simply push packages during build, from your build.bat. Let’s push all packages in the build’s release folder to NuGet.org:

nuget push release/*

Prefer pushing MyPackage 1.0 to another feed? Add it as a package source in MyGet, specify the API key and push from build.bat:

nuget push MyPackage.1.0.nupkg -Source http://other-feed

Note that the packages generated during build will also be added to your MyGet feed.

Happy packaging!