If I recall correctly, the point of Singularity wasn't to have a platform base where all programming languages shared the same infrastructure, but rather to hav

If I recall correctly, the point of Singularity wasn't to have a platform base where all programming languages shared the same infrastructure, but rather to have an operating system that ran (almost) entirely in "managed code" (the .net framework's safe-execution system). .net itself is what you're thinking of.