pkgs/sandbox: Create injected target directory

When using NIX_SANDBOX_DEBUG_INJECT_FILES (which we now call
NIX_SANDBOX_DEBUG_INJECT_DIRS, because it's more accurate), I usually
used it to provide fake /dev or /sys directories.

I turned out, that today I was trying to use this functionality again
(who'd have known) and it also turned out that I forgot to create the
target directory, which wasn't needed back then for /dev or /sys because
they were already existing.

Signed-off-by: aszlig <aszlig@nix.build>

0 files changed, 0 insertions, 0 deletions