Ebuild's require a tarball with sources to be downloaded. The way to create such a tarbal is to make tag.
I am not sure about exact version (2.8.2 or 2.8.3) because of this bug - https://github.com/gentoo/dotnet/issues/33 . But in your version of sources may be any version of NuGet will work, I don't know.
right now you have 3.0.0-preview and 2.7.3 tags. And I don't know what to choose for monodevelop 5.7.0
Ebuild's require a tarball with sources to be downloaded. The way to create such a tarbal is to make tag.
I am not sure about exact version (2.8.2 or 2.8.3) because of this bug - https://github.com/gentoo/dotnet/issues/33 . But in your version of sources may be any version of NuGet will work, I don't know.
right now you have 3.0.0-preview and 2.7.3 tags. And I don't know what to choose for monodevelop 5.7.0