$ lddtree test2                                                                ~
test2 => ./test2 (interpreter => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/ld-linux-x86-64.so.2)
    libblas.so => /nix/store/c391mcv2cn2mlc76w222jdn2hvmwwidf-blas-3.5.0/lib/libblas.so
        libgcc_s.so.1 => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/libgcc_s.so.1
        libquadmath.so.0 => /nix/store/3m8wl9f0jq3w6xb94br7dnnhi3jdl2h4-gfortran-5.4.0-lib/lib/libquadmath.so.0
    libgmp.so.10 => /nix/store/qjcydaxq01mhj13bcmr40nbyv3h5bpky-gmp-6.1.2/lib/libgmp.so.10
    libm.so.6 => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/libm.so.6
        ld-linux-x86-64.so.2 => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/ld-linux-x86-64.so.2
    librt.so.1 => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/librt.so.1
    libdl.so.2 => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/libdl.so.2
    libpthread.so.0 => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/libpthread.so.0
    libc.so.6 => /nix/store/izxnyg94352qxa4a4783dzgnpy5cwazj-glibc-2.25/lib/libc.so.6
    libgfortran.so.3 => not found