FM-186: Factor out cache setup

.github/actions/install-tools/action.yaml

@@ -1,5 +1,5 @@
-name: Installs
-description: "Install dependencies and tools"
+name: Install Tools
+description: "Install platform dependencies and tools"
 inputs:
   repo-token:
     description: "secrets.GITHUB_TOKEN"

.github/actions/setup-cache/action.yaml

@@ -0,0 +1,26 @@
+name: Setup Cache
+description: "Setup Rust artifact caching"
+inputs:
+  name:
+    description: "Name of the step from the Makefile"
+    required: true
+  os:
+    description: "Name of the OS"
+    required: true
+  rust:
+    description: "Name of the Rust version"
+    required: true
+
+runs:
+  using: "composite"
+
+  steps:
+    - name: Setup sccache
+      uses: hanabi1224/[email protected] # https://github.com/hanabi1224/sccache-action used by Forest.
+      with:
+        release-name: v0.3.1
+        # Caching everything separately, in case they don't ask for the same things to be compiled.
+        cache-key: ${{ inputs.name }}-${{ inputs.os }}-${{ inputs.rust }}-${{ hashFiles('**/Cargo.lock', 'rust-toolchain', 'rust-toolchain.toml') }}
+        # Not sure why we should ever update a cache that has the hash of the lock file in it.
+        # In Forest it only contains the rust-toolchain, so it makes sense to update because dependencies could have changed.
+        cache-update: false

.github/workflows/ci.yaml

@@ -70,17 +70,14 @@ jobs:
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Setup sccache
-        uses: hanabi1224/[email protected] # https://github.com/hanabi1224/sccache-action used by Forest.
+      - name: Setup Cache
+        uses: ./.github/actions/setup-cache
         timeout-minutes: 5
         continue-on-error: true
         with:
-          release-name: v0.3.1
-          # Caching everything separately, in case they don't ask for the same things to be compiled.
-          cache-key: ${{ matrix.make.name }}-${{ matrix.os }}-${{matrix.rust}}-${{ hashFiles('**/Cargo.lock', 'rust-toolchain', 'rust-toolchain.toml') }}
-          # Not sure why we should ever update a cache that has the hash of the lock file in it.
-          # In Forest it only contains the rust-toolchain, so it makes sense to update because dependencies could have changed.
-          cache-update: false
+          name: ${{ matrix.make.name }}
+          os:   ${{ matrix.os }}
+          rust: ${{ matrix.rust }}
 
       - name: ${{ matrix.make.name }}
         run: make ${{ matrix.make.task }}