timoni: add update script

pkgs/applications/networking/cluster/timoni/default.nix

@@ -23,6 +23,8 @@ buildGoModule rec {
   # Some tests require running Kubernetes instance
   doCheck = false;
 
+  passthru.updateScript = ./update.sh;
+
   ldflags = [
     "-s"
     "-w"

pkgs/applications/networking/cluster/timoni/update.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl gnused nix jq
+set -euo pipefail
+
+PKG_DIR=$(dirname "${BASH_SOURCE[@]}")
+FILE="$PKG_DIR/default.nix"
+NIXPKGS_ROOT=$(cd $PKG_DIR && git rev-parse --show-toplevel)
+ATTR="timoni"
+
+PREV_VERSION=$(nix eval --raw -f $NIXPKGS_ROOT/default.nix $ATTR.version)
+LATEST_TAG=$(curl ${GITHUB_TOKEN:+" -u \":$GITHUB_TOKEN\""} --silent https://api.github.com/repos/stefanprodan/timoni/releases/latest | jq -r '.tag_name')
+NEXT_VERSION=$(echo ${LATEST_TAG} | sed 's/^v//')
+
+# update version
+sed -i "s|$PREV_VERSION|$NEXT_VERSION|" "$FILE"
+
+# update hash
+PREV_HASH=$(nix eval --raw -f $NIXPKGS_ROOT/default.nix $ATTR.src.outputHash)
+NEXT_HASH=$(nix hash to-sri --type sha256 $(nix-prefetch-url --unpack --type sha256 $(nix eval --raw -f $NIXPKGS_ROOT/default.nix $ATTR.src.url)))
+sed -i "s|$PREV_HASH|$NEXT_HASH|" "$FILE"
+
+# update vendor hash
+PREV_VENDOR_HASH=$(nix eval --raw -f $NIXPKGS_ROOT/default.nix $ATTR.vendorHash)
+EMPTY_HASH="sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
+sed -i "s|$PREV_VENDOR_HASH|$EMPTY_HASH|" "$FILE"
+
+set +e
+NEXT_VENDOR_HASH=$(nix-build $NIXPKGS_ROOT --no-out-link -A $ATTR 2>&1 | grep "got:" | cut -d':' -f2 | sed 's| ||g')
+set -e
+
+if [ -z "${NEXT_VENDOR_HASH:-}" ]; then
+    echo "Update failed. NEXT_VENDOR_HASH is empty." >&2
+    exit 1
+fi
+
+sed -i "s|$EMPTY_HASH|$NEXT_VENDOR_HASH|" "$FILE"
+
+cat <<EOF
+[{
+    "attrPath": "$ATTR",
+    "oldVersion": "$PREV_VERSION",
+    "newVersion": "$NEXT_VERSION",
+    "files": ["$PWD/default.nix.nix"]
+}]
+EOF