Are you using nix-build or nix build a lot? These create result-symlinks to the resulting store-path in order to make it easier to access immediately after the build. They can be safely removed btw.
nix-build
nix build
Are you using
nix-buildornix builda lot? These create result-symlinks to the resulting store-path in order to make it easier to access immediately after the build. They can be safely removed btw.