Attempt to add caching

.github/workflows/main.yml

@@ -23,13 +23,32 @@ jobs:
       with:
         repository: purduesigbots/pros
         ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}
-
+
+    - name: Retrieve gcc-arm-embedded from cache
+      id: cache-gcc
+      uses: actions/cache/restore@v4
+      with: 
+        path: 
+          $(pwd)/gcc-arm-none-eabi-${TOOLCHAIN_UPDATE}
+        key: 
+          gcc-non-eabi-${TOOLCHAIN_UPDATE}
+
     - name: Install gcc-arm-embedded
+      if: steps.cache-gcc.outputs.cache-hit != 'true'
       run: |
         curl -LSso toolchain.tar.bz2 "https://developer.arm.com/-/media/Files/downloads/gnu-rm/${TOOLCHAIN_UPDATE}/gcc-arm-none-eabi-${TOOLCHAIN_UPDATE}-x86_64-linux.tar.bz2"
         tar -xjvf toolchain.tar.bz2
-        echo "$(pwd)/gcc-arm-none-eabi-${TOOLCHAIN_UPDATE}/bin" >> $GITHUB_PATH
-        echo "$GITHUB_PATH"
+    - name: Upload gcc-arm-embedded to cache
+      if: steps.cache-gcc.outputs.cache-hit != 'true
+      uses: actions/cache/save@v4
+      with:
+        path: 
+          $(pwd)/gcc-non-eabi-${TOOLCHAIN_UPDATE}
+        key:
+          gcc-non-eabi-${TOOLCHAIN_UPDATE}
+
+    - name: Add gcc-arm-embedded to path
+      run: echo "$(pwd)/gcc-arm-none-eabi-${TOOLCHAIN_UPDATE}/bin" >> $GITHUB_PATH
 
     - name: Set up Python
       uses: actions/setup-python@v2
@@ -51,4 +70,4 @@ jobs:
     - name: Publish artifacts
       uses: actions/upload-artifact@v4
       with:
-        path: artifacts/*.zip
+        path: artifacts/kernel@*.zip