Before this change, if you tried to run a binary that was installed by
vcpkg, then you would get this error:
error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory
This change prevents that error from happening.
Fixes#317553.
The nixpkgs-unstable channel's programs.sqlite was used to identify
packages producing exactly one binary, and these automatically added
to their package definitions wherever possible.