I used nix for some stuff earlier and it worked. But now I keep getting this:
$ nix-shell -p nix-info --run "nix-info"
bash: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory
If I nix-shell in some project it'll first install the stuff, but then when it's done installing it can't run things because of the libstdc++ missing.
Does nix not provide its own libstdc++?
My problem was I had LD_PRELOAD set to libtcmalloc as in https://goog-perftools.sourceforge.net/doc/tcmalloc.html, unsetting that fixed it.