I tried, but the derivation ended up with no files in it:

```
# find /nix/store/b010qffb8hk103q172qzw6k9gdxzblyb-python2.7-libvirt-python-1.2.0
/nix/store/b010qffb8hk103q172qzw6k9gdxzblyb-python2.7-libvirt-python-1.2.0
/nix/store/b010qffb8hk103q172qzw6k9gdxzblyb-python2.7-libvirt-python-1.2.0/lib
/nix/store/b010qffb8hk103q172qzw6k9gdxzblyb-python2.7-libvirt-python-1.2.0/lib/python2.7
/nix/store/b010qffb8hk103q172qzw6k9gdxzblyb-python2.7-libvirt-python-1.2.0/lib/python2.7/site-packages
/nix/store/b010qffb8hk103q172qzw6k9gdxzblyb-python2.7-libvirt-python-1.2.0/nix-support
/nix/store/b010qffb8hk103q172qzw6k9gdxzblyb-python2.7-libvirt-python-1.2.0/nix-support/propagated-native-build-inputs
```