depot/pkgs/build-support/fetchmtn/builder.sh
Luke Granger-Brown 57725ef3ec Squashed 'third_party/nixpkgs/' content from commit 76612b17c0ce
git-subtree-dir: third_party/nixpkgs
git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
2024-11-10 23:59:47 +00:00

46 lines
1.2 KiB
Bash

if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
source $stdenv/setup
set -x
if ! [ -f "$cacheDB" ]; then
echo "Creating cache DB $cacheDB"
mtn --db "$cacheDB" db init
fi
echo "getting revision $selector";
done=;
for source in $dbs; do
if mtn pull --db "$cacheDB" "$source" "${branch}"; then
revision="$(mtn --db "$cacheDB" au toposort $(mtn --db "$cacheDB" au select "$selector") | tail -1)";
if [ -n "$revision" ]; then
if mtn --db "$cacheDB" au get_revision "$revision"; then
echo "found revision $revision"
done=1;
else
echo "revision $revision does not exist";
fi
else
echo "selector $selector does not match any revision";
fi
else
echo "pulling branch $branch wasn't successful";
fi;
if test -n "$done"; then
break;
fi;
done;
echo "checking out the revision $revision";
if test -n "$done"; then
mtn checkout --db "$cacheDB" -r "$revision" "$out" -b "${branch}"
else
echo "Needed revision still not found. Exiting";
exit 1;
fi;
echo "clearing _MTN in the output"
rm -rf "$out/_MTN"