EoE

Seems fixed after a clean reinstallation, I will try to trace the root cause.

After some testing, it appears that running pip with `--target $sitepackages` causes vsrepo to fail on all subsequent runs. This only appears to happen if the target is the user's...

Further investigation suggests that this will only happen if the package installed by pip has a vapoursynth dependancy. I assume this somehow breaks the distinfos for vsrepo.