ddd480ac30
This reverts commit e8e8164f348a0e8655e1d50a7a404bdc62055f4e. I misread the original commit as adding the "which" package, but it only adds it to base.nix. So then the original motivation (making it work in subshells) doesn't hold. Note that we already have some convenience aliases that don't work in subshells either (such as "ll").
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.