From 7284a2000ace95772ed11f72d046e3763080235d Mon Sep 17 00:00:00 2001
From: lelgenio <lelgenio@disroot.org>
Date: Sat, 20 Jan 2024 20:49:50 -0300
Subject: [PATCH] protoc-gen-dart: add passthru.updateScript

---
 .../tools/protoc-gen-dart/default.nix         |  2 ++
 .../tools/protoc-gen-dart/update.sh           | 33 +++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100755 pkgs/development/tools/protoc-gen-dart/update.sh

diff --git a/pkgs/development/tools/protoc-gen-dart/default.nix b/pkgs/development/tools/protoc-gen-dart/default.nix
index b09322e29701..06a96e70cf3e 100644
--- a/pkgs/development/tools/protoc-gen-dart/default.nix
+++ b/pkgs/development/tools/protoc-gen-dart/default.nix
@@ -17,6 +17,8 @@ buildDartApplication rec {
 
   pubspecLock = lib.importJSON ./pubspec.lock.json;
 
+  passthru.updateScript = ./update.sh;
+
   meta = with lib; {
     description = "Protobuf plugin for generating Dart code";
     mainProgram = "protoc-gen-dart";
diff --git a/pkgs/development/tools/protoc-gen-dart/update.sh b/pkgs/development/tools/protoc-gen-dart/update.sh
new file mode 100755
index 000000000000..5bea5f3bea84
--- /dev/null
+++ b/pkgs/development/tools/protoc-gen-dart/update.sh
@@ -0,0 +1,33 @@
+#!/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"