From 6b7d3e3ecf6b8e9ffd734106933d1841b59929d6 Mon Sep 17 00:00:00 2001
From: "Sean T. Allen" <sean@seantallen.com>
Date: Mon, 7 Aug 2023 19:05:55 +0000
Subject: [PATCH] Add workflow to manually update the lib cache

We cache `lib` in order to speed up our builds as building all of LLVM
takes a long long time. Once an update to any of the files that would
invalidate the cached libs is done, until a new cached version is done
on "main", it won't apply to new PRs.

This workflow allows us to update (if needed) the lib cache for any
given branch. In general, this would usually only be used on `main`.
---
 .github/workflows/update-lib-cache.yml | 36 ++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 .github/workflows/update-lib-cache.yml

diff --git a/.github/workflows/update-lib-cache.yml b/.github/workflows/update-lib-cache.yml
new file mode 100644
index 0000000000..6ed899441f
--- /dev/null
+++ b/.github/workflows/update-lib-cache.yml
@@ -0,0 +1,36 @@
+name: Manually update lib cache
+
+on:
+  workflow_dispatch
+
+concurrency:
+  group: "update-lib-cache"
+
+jobs:
+  x86_64-linux:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        include:
+          - image: ponylang/ponyc-ci-x86-64-unknown-linux-ubuntu22.04-builder:20230806
+            name: x86-64 Ubuntu 22.04
+          - image: ponylang/ponyc-ci-x86-64-unknown-linux-ubuntu20.04-builder:20230807
+            name: x86-64 Ubuntu 20.04
+
+    name: ${{ matrix.name }}
+    container:
+      image: ${{ matrix.image }}
+      options: --user pony
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Cache Libs
+        id: cache-libs
+        uses: actions/cache@v3
+        with:
+          path: build/libs
+          key: libs-${{ matrix.image }}-${{ hashFiles('Makefile', 'CMakeLists.txt', 'libs/CMakeLists.txt') }}
+      - name: Build Libs
+        if: steps.cache-libs.outputs.cache-hit != 'true'
+        run: make libs build_flags=-j8