Re-enable sccache (denoland#9670)

.github/workflows/ci.yml

@@ -47,6 +47,7 @@ jobs:
  CARGO_INCREMENTAL: 0
  RUST_BACKTRACE: full
  CARGO_TERM_COLOR: always
+ RUSTC_WRAPPER: sccache
 
  steps:
  - name: Configure git
@@ -71,11 +72,39 @@ jobs:
  mkdir -p target/release
  tar --exclude=.cargo_home --exclude=".git*" --exclude=target --exclude=third_party/prebuilt -czvf target/release/deno_src.tar.gz -C .. deno
 
+ # Note the following caches target which includes sccache.
+ - uses: Swatinem/rust-cache@v1
+
  - name: Install rust
  uses: hecrj/setup-rust-action@v1
  with:
  rust-version: 1.50.0
 
+ - name: Install and start sccache
+ shell: pwsh
+ env:
+ SCCACHE_DIR: ${{ github.workspace }}/target/sccache
+ SCCACHE_CACHE_SIZE: 128M
+ SCCACHE_IDLE_TIMEOUT: 0
+ run: |
+ $version = "v0.2.15"
+ $platform =
+ @{ "macOS" = "x86_64-apple-darwin"
+ "Linux" = "x86_64-unknown-linux-musl"
+ "Windows" = "x86_64-pc-windows-msvc"
+ }.${{ runner.os }}
+ $basename = "sccache-$version-$platform"
+ chmod u+x $basename/sccache
+ $url = "https://github.com/mozilla/sccache/releases/download/" +
+ "$version/$basename.tar.gz"
+ cd ~
+ curl -LO $url
+ tar -xzvf "$basename.tar.gz"
+ chmod u+x $basename/sccache
+ . $basename/sccache --start-server
+ echo "$(pwd)/$basename" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+
+
  - name: Install clippy and rustfmt
  if: matrix.kind == 'lint'
  run: |
@@ -330,3 +359,7 @@ jobs:
  target/release/deno_src.tar.gz
  target/release/lib.deno.d.ts
  draft: true
+
+ - name: Stop sccache
+ if: always()
+ run: sccache --stop-server