depot/third_party/nixpkgs/pkgs/development/tools/protoc-gen-dart/update.sh

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#!/usr/bin/env nix-shell
#!nix-shell -i bash -p yq ripgrep common-updater-scripts dart
set -xeu -o pipefail
PACKAGE_DIR="$(realpath "$(dirname "$0")")"
cd "$PACKAGE_DIR/.."
while ! test -f flake.nix; do cd .. ; done
NIXPKGS_DIR="$PWD"
version="$(
list-git-tags --url=https://github.com/google/protobuf.dart \
| rg '^protobuf-v(.*)' -r '$1' \
| sort --version-sort \
| tail -n1
)"
cd "$NIXPKGS_DIR"
update-source-version protoc-gen-dart "$version"
TMPDIR="$(mktemp -d)"
cd "$TMPDIR"
src="$(nix-build --no-link "$NIXPKGS_DIR" -A protoc-gen-dart.src)/protoc_plugin"
cp $src/pubspec.* .
if ! test -f pubspec.lock; then
dart pub update
fi
yq . pubspec.lock > "$PACKAGE_DIR/pubspec.lock.json"
rm -rf "$TMPDIR"