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

Apple/NetworkExtension/libburrow/build-rust.sh

@@ -79,6 +79,14 @@ if [[ -n "${RUSTC_WRAPPER:-}" && "${RUSTC_WRAPPER}" != /* ]]; then
     fi
 fi
 
+if [[ -x "$(command -v rustup)" ]]; then
+    for TARGET in "${RUST_TARGETS[@]}"; do
+        if ! rustup target list --installed | grep -qx "${TARGET}"; then
+            rustup target add "${TARGET}"
+        fi
+    done
+fi
+
 # Run cargo without the various environment variables set by Xcode.
 # Those variables can confuse cargo and the build scripts it runs.
 EXTRA_ENV=()