tests/blacklists/nix

store: use the new boolean property in `narrow`

# Tests to be disabled when building and testing in the Nix sandbox.

# tests enforcing "/usr/bin/env" shebangs, which are patched for nix
test-run-tests.t
test-check-shbang.t

# doesn't like the extra setlocale warnings emitted by the nix bash wrappers
test-locale.t