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runHook preFetch
tagtext=""
tagflags=""
# Darcs hashes are sha1 (120 bits, 40-character hex)
if [[ "$rev" =~ [a-fA-F0-9]{40} ]]; then
tagtext="(hash $rev)"
tagflags="--to-hash=$rev"
elif test -n "$rev"; then
tagtext="(tag $rev)"
tagflags="--tag=$rev"
elif test -n "$context"; then
tagtext="(context)"
tagflags="--context=$context"
fi
# Repository list may contain ?. No glob expansion for that.
set -o noglob
success=
for repository in $repositories; do
echo "Trying to clone $repository $tagtext into $out …"
if darcs clone --lazy --no-cache $tagflags "$repository" "$out"; then
# remove metadata, because it can change
rm -rf "$out/_darcs"
success=1
break
fi
done
set +o noglob
if [ -z "$success" ]; then
echo "Error: couldn’t clone repository from any mirror" 1>&2
exit 1
fi
runHook postFetch
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