1 files changed, 36 insertions, 0 deletions
diff --git a/overlays/mjolnir-package/update.sh b/overlays/mjolnir-package/update.sh
new file mode 100755
index 0000000..1ada429
--- /dev/null
+++ b/overlays/mjolnir-package/update.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p nix curl jq prefetch-yarn-deps nix-prefetch-github
+
+if [ "$#" -gt 1 ] || [[ "$1" == -* ]]; then
+  echo "Regenerates packaging data for mjolnir."
+  echo "Usage: $0 [git release tag]"
+  exit 1
+fi
+
+version=$1
+
+set -euo pipefail
+
+if [ -z "$version" ]; then
+  version=$(curl "https://api.github.com/repos/matrix-org/mjolnir/releases/latest" | jq -r '.tag_name')
+fi
+
+src="https://raw.githubusercontent.com/matrix-org/mjolnir/$version"
+src_hash=$(nix-prefetch-github matrix-org mjolnir --rev ${version} | jq -r .sha256)
+
+tmpdir=$(mktemp -d)
+trap 'rm -rf "$tmpdir"' EXIT
+
+pushd $tmpdir
+curl -O "$src/yarn.lock"
+yarn_hash=$(prefetch-yarn-deps yarn.lock)
+popd
+
+curl -O "$src/package.json"
+cat > pin.json << EOF
+{
+  "version": "$version",
+  "srcHash": "$src_hash",
+  "yarnHash": "$yarn_hash"
+}
+EOF