Update

Author: odow

.github/workflows/build_test_windows.yml

@@ -4,6 +4,10 @@ on:
     branches: [master]
   pull_request:
     types: [opened, synchronize, reopened]
+# needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
 jobs:
   build-linux:
     name: Julia - ${{ github.event_name }}
@@ -18,6 +22,7 @@ jobs:
         with:
           version: "1.7"
           arch: x64
+      - uses: julia-actions/cache@v2
       - name: build
         run: |
           julia --color=yes -e 'using Pkg; Pkg.add("BinaryBuilder")'
@@ -43,6 +48,7 @@ jobs:
         with:
           version: "1"
           arch: x64
+      - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - uses: actions/download-artifact@v4
         with:
@@ -55,5 +61,6 @@ jobs:
       - shell: julia --color=yes {0}
         run: |
           using Pkg
+          Pkg.add(Pkg.PackageSpec(; path = ENV["GITHUB_WORKSPACE"]))
           Pkg.develop(; path="/home/runner/.julia/dev/SCIP_jll")
           Pkg.test("SCIP")