release.nix: Preserve modes in <nixpkgs>.

This is cruicial for scripts such as nix-prefetch-git, which have the
executable bit set and a builder is trying to call it.

Instead, we're now preserving mode and set it writable for the current
user directly afterwards, which essentially was my original motivation
to not preserve modes.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

0 files changed, 0 insertions, 0 deletions