Use the same cache cleanup as pola-rs (#442)

.github/actions/setup-rust/action.yml

@@ -19,14 +19,8 @@ runs:
     - name: Rust Dependency Cache
       uses: Swatinem/rust-cache@v2
       with:
-        save-if: ${{ github.ref == 'refs/heads/develop' }}
+        save-if: ${{ github.ref_name == 'develop' }}
         shared-key: "shared" # To allow reuse across jobs
-        cache-targets: false
-
-    - name: Cargo clean
-      shell: bash
-      run: |
-        cargo clean
 
     - name: Rust Compile Cache
       uses: mozilla-actions/[email protected]

.github/workflows/clear-caches.yml

@@ -0,0 +1,20 @@
+# Taken from pola-rs/polars
+# Clearing caches regularly takes care of Rust caches growing to problematic size over time
+
+name: Clear caches
+
+on:
+  schedule:
+    - cron: '0 4 * * MON'
+  workflow_dispatch:
+
+jobs:
+  clear-caches:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Clear all caches
+        run: gh cache delete --all
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}