From 03e07bfe4b641d0b3dbef8623e511d607a3c2033 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Steven=20Dee=20=28J=C5=8Dshin=29?= <mrdomino@stairwell.com>
Date: Thu, 17 Apr 2025 13:45:52 -0700
Subject: [PATCH] Cache .cosmocc and o for github workflows
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Uses GitHub’s actions/cache@v4 to store the cosmocc distribution and the
output directory between runs of the build workflow, with the version of
cosmocc as the cache key.

Upgrades to actions/checkout@v4.
---
 .github/workflows/build.yml | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c558453d5..1618d7998 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,5 +1,8 @@
 name: build
 
+env:
+  COSMOCC_VERSION: 3.9.2
+
 on:
   push:
     branches:
@@ -19,7 +22,20 @@ jobs:
       matrix:
         mode: ["", tiny, rel, tinylinux, optlinux]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+
+      - uses: actions/cache@v4
+        with:
+          path: .cosmocc/${{ env.COSMOCC_VERSION }}
+          key: cosmocc-${{ env.COSMOCC_VERSION }}
+
+      - uses: actions/cache@v4
+        with:
+          path: o
+          key: o-${{ matrix.mode }}-${{ env.COSMOCC_VERSION }}
+          restore-keys: |
+            o-${{ matrix.mode }}-
+            o-
 
       - name: support ape bins 1
         run: sudo cp build/bootstrap/ape.elf /usr/bin/ape