update-package does not work for F# projects and possibly has never worked.
You can use my project https://github.com/jackfoxy/RandomBitsSolution for testing.
I have attempted this on a recent nightly build and it still does not work.
@foxyjackfox: @dotnetjunky @sforkmann @dnauck Using Nuget Package Manager v2.3.31113.21
Please thoroughly test the entire NuGet F# life cycle.
Comments: @jackfoxy for fsunit from https://github.com/jackfoxy/RandomBitsSolution/blob/master/RandomBitsTest/RandomBitsTest.fsproj and https://github.com/jackfoxy/RandomBitsSolution/blob/master/RandomBitsTest/packages.config it looks like the proj file has the hintpath set to fsunit but package.config doesn't have fsunit in it. So you might have run into the issue that I mentioned earlier when after you it uninstalled fsunit it didn't remove the hint path Can you try removing the hint path for fsunit and then try re-installing fsunit as a workaround for the project.
You can use my project https://github.com/jackfoxy/RandomBitsSolution for testing.
I have attempted this on a recent nightly build and it still does not work.
@foxyjackfox: @dotnetjunky @sforkmann @dnauck Using Nuget Package Manager v2.3.31113.21
Please thoroughly test the entire NuGet F# life cycle.
Comments: @jackfoxy for fsunit from https://github.com/jackfoxy/RandomBitsSolution/blob/master/RandomBitsTest/RandomBitsTest.fsproj and https://github.com/jackfoxy/RandomBitsSolution/blob/master/RandomBitsTest/packages.config it looks like the proj file has the hintpath set to fsunit but package.config doesn't have fsunit in it. So you might have run into the issue that I mentioned earlier when after you it uninstalled fsunit it didn't remove the hint path Can you try removing the hint path for fsunit and then try re-installing fsunit as a workaround for the project.