From f2a472ab446aa322b23dff1faebccba6c0cd4ca4 Mon Sep 17 00:00:00 2001
From: Simon Cruanes <simon.cruanes.2007@m4x.org>
Date: Mon, 21 Dec 2020 16:34:02 -0500
Subject: [PATCH] try to enable cache in CI

---
 .github/workflows/main.yml | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5d0d982e..ce62dbcf 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,9 +10,16 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@main
-    - uses: avsm/setup-ocaml@master
+    - name: cache opam
+      id: cache-opam
+      uses: actions/cache@v2
+      with:
+        path: _opam
+        key: opam-${{matrix.operating-system}}-${{matrix.ocaml-version}}
+    - uses: avsm/setup-ocaml@v1
       with:
         ocaml-version: ${{ matrix.ocaml }}
+      if: steps.cache-opam.outputs.cache-hit != 'true'
     - run: opam pin -n .
     - run: opam depext -yt containers containers-data containers-thread
     - run: opam install -t . --deps-only