81194eef45
Older bash version, like those in the bootstrap tools and on macOS,
currently confuse variables defined as an empty array with undefined
variables. `${foo+"${foo[@]}"}` will prevent `set -u` problems with
empty arrays and older without making a single '' in the empty case.
Care is taken to `set +u` when running hooks so as to not break existing
packages.
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| .. | ||
| cross | ||
| custom | ||
| cygwin | ||
| darwin | ||
| freebsd | ||
| generic | ||
| linux | ||
| native | ||
| nix | ||
| adapters.nix | ||
| booter.nix | ||
| common-path.nix | ||
| default.nix | ||