nix flake doesn't build knotserver with version information #133

The nix flake is missing the ldflags to add the version information. There isn't a way to a way to run git describe inside the nix flake afaik since the .git folder is removed when being copied into the nix store but from a nix flake we can access the current commit using self.rev, self.shortRev, and self.revCount. This doesn't give us the git tag however so tag would need to be specified elsewhere.