Stabilize Apple Namespace build caches

.forgejo/workflows/build-apple.yml

@@ -33,6 +33,7 @@ jobs:
       CARGO_INCREMENTAL: 0
       RUST_BACKTRACE: short
       RUSTC_WRAPPER: sccache
+      SCCACHE_CACHE_SIZE: 20G
     steps:
       - name: Checkout
         uses: https://code.forgejo.org/actions/checkout@v4
@@ -82,6 +83,12 @@ jobs:
             "${cache_root}/apple/PackageCache" \
             "${cache_root}/apple/SourcePackages" \
             "${cache_root}/apple/DerivedData/${{ matrix.cache-id }}"
+          rm -rf \
+            "${cache_root}/cargo-target/${{ matrix.cache-id }}" \
+            "${cache_root}/apple/DerivedData/${{ matrix.cache-id }}"
+          mkdir -p \
+            "${cache_root}/cargo-target/${{ matrix.cache-id }}" \
+            "${cache_root}/apple/DerivedData/${{ matrix.cache-id }}"
           echo "CARGO_HOME=${cache_root}/cargo" >> "${GITHUB_ENV}"
           echo "CARGO_TARGET_DIR=${cache_root}/cargo-target/${{ matrix.cache-id }}" >> "${GITHUB_ENV}"
           echo "RUSTUP_HOME=${cache_root}/rustup" >> "${GITHUB_ENV}"
@@ -90,6 +97,7 @@ jobs:
           echo "APPLE_PACKAGE_CACHE=${cache_root}/apple/PackageCache" >> "${GITHUB_ENV}"
           echo "APPLE_SOURCE_PACKAGES=${cache_root}/apple/SourcePackages" >> "${GITHUB_ENV}"
           echo "APPLE_DERIVED_DATA=${cache_root}/apple/DerivedData/${{ matrix.cache-id }}" >> "${GITHUB_ENV}"
+          df -h "${cache_root}" || true
 
       - name: Install Rust
         shell: bash