[nurple]

My workstation seems fine:

  $ ls -R /{lib,usr,bin,sbin}
  ls: cannot access '/sbin': No such file or directory
  /bin:
  sh

  /lib:
  ld-linux.so.2

  /usr:
  bin

  /usr/bin:
  env

Oh right...

  $ ls -l /usr/bin/env
  lrwxrwxrwx 1 root root 65 Mar 21 23:39 /usr/bin/env -> 
  /nix/store/9m68vvhnsq5cpkskphgw84ikl9m6wjwp-coreutils-9.5/bin/env

  $ ldd /usr/bin/env 
        linux-vdso.so.1 (0x00007ffff7fc4000)
        libacl.so.1 => /nix/store/dyizbk50iglbibrbwbgw2mhgskwb6ham-acl-2.3.2/lib/libacl.so.1 (0x00007ffff7fb3000)
        libattr.so.1 => /nix/store/vlgwyb076hkz7yv96sjnj9msb1jn1ggz-attr-2.5.2/lib/libattr.so.1 (0x00007ffff7fab000)
        libgmp.so.10 => /nix/store/dsxb6qvi21bzy21c98kb71wfbdj4lmz7-gmp-with-cxx-6.3.0/lib/libgmp.so.10 (0x00007ffff7f06000)
        libc.so.6 => /nix/store/maxa3xhmxggrc5v2vc0c3pjb79hjlkp9-glibc-2.40-66/lib/libc.so.6 (0x00007ffff7d0e000)
        /nix/store/maxa3xhmxggrc5v2vc0c3pjb79hjlkp9-glibc-2.40-66/lib/ld-linux-x86-64.so.2 => 
        /nix/store/maxa3xhmxggrc5v2vc0c3pjb79hjlkp9-glibc-2.40-66/lib64/ld-linux-x86-64.so.2 (0x00007ffff7fc6000)

[MadnessASAP]

Don't have to worry about trashing FHS if your OS doesn't use FHS :-P