Add buck2 CI on Windows

.github/workflows/ci.yml

@@ -2,149 +2,22 @@ name: CI
 
 on:
   push:
-  pull_request:
   workflow_dispatch:
-  schedule: [cron: "40 1 * * *"]
 
 permissions:
   contents: read
 
 jobs:
-  pre_ci:
-    uses: dtolnay/.github/.github/workflows/pre_ci.yml@master
-
-  test:
-    name: ${{matrix.name || format('Rust {0}', matrix.rust)}}
-    needs: pre_ci
-    if: needs.pre_ci.outputs.continue
-    runs-on: ${{matrix.os || 'ubuntu'}}-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - rust: nightly
-          - rust: beta
-          - rust: stable
-          - rust: 1.60.0
-          - rust: 1.64.0
-          - name: macOS
-            rust: nightly
-            os: macos
-          - name: Windows (msvc)
-            rust: nightly-x86_64-pc-windows-msvc
-            os: windows
-            flags: /EHsc
-    env:
-      CXXFLAGS: ${{matrix.flags}}
-      RUSTFLAGS: --cfg deny_warnings -Dwarnings
-    timeout-minutes: 45
-    steps:
-      - name: Enable symlinks (windows)
-        if: matrix.os == 'windows'
-        run: git config --global core.symlinks true
-      - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: ${{matrix.rust}}
-      - name: Determine test suite subset
-        # Our Windows and macOS jobs are the longest running, so exclude the
-        # relatively slow compiletest from them to speed up end-to-end CI time,
-        # except during cron builds when no human is presumably waiting on the
-        # build. The extra coverage is not particularly valuable and we can
-        # still ensure the test is kept passing on the basis of the scheduled
-        # builds.
-        run: |
-          echo RUSTFLAGS=$RUSTFLAGS >> $GITHUB_ENV
-          echo exclude=--exclude cxx-test-suite ${{matrix.rust == '1.60.0' && '--exclude cxxbridge-cmd' || ''}} >> $GITHUB_OUTPUT
-        env:
-          RUSTFLAGS: ${{env.RUSTFLAGS}} ${{matrix.os && github.event_name != 'schedule' && '--cfg skip_ui_tests' || ''}}
-        id: testsuite
-        shell: bash
-      - run: cargo run --manifest-path demo/Cargo.toml
-      - run: cargo test --workspace ${{steps.testsuite.outputs.exclude}}
-      - run: cargo check --no-default-features --features alloc
-        env:
-          RUSTFLAGS: --cfg compile_error_if_std ${{env.RUSTFLAGS}}
-      - run: cargo check --no-default-features
-        env:
-          RUSTFLAGS: --cfg compile_error_if_alloc --cfg cxx_experimental_no_alloc ${{env.RUSTFLAGS}}
-
   buck:
-    name: Buck2 on ${{matrix.os == 'ubuntu' && 'Linux' || matrix.os == 'macos' && 'macOS' || '???'}}
-    runs-on: ${{matrix.os}}-latest
-    if: github.event_name != 'pull_request'
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu, macos]
+    name: Buck2
+    runs-on: windows-latest
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v3
         with:
           submodules: true
       - uses: dtolnay/rust-toolchain@stable
       - uses: dtolnay/install-buck2@latest
-      - name: Install lld
-        run: sudo apt-get install lld
-        if: matrix.os == 'ubuntu'
       - run: buck2 run demo
       - run: buck2 build ...
       - run: buck2 test ...
-      - uses: dtolnay/install@reindeer
-        if: matrix.os == 'ubuntu'
-      - run: reindeer buckify
-        if: matrix.os == 'ubuntu'
-        working-directory: third-party
-      - name: Check reindeer-generated BUCK file up to date
-        run: git diff --exit-code
-        if: matrix.os == 'ubuntu'
-
-  bazel:
-    name: Bazel
-    runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request'
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v3
-      - name: Install Bazel
-        run: |
-          wget -q -O install.sh https://github.com/bazelbuild/bazel/releases/download/6.0.0/bazel-6.0.0-installer-linux-x86_64.sh
-          chmod +x install.sh
-          ./install.sh --user
-          echo $HOME/bin >> $GITHUB_PATH
-      - name: Install lld
-        run: sudo apt-get install lld
-      - run: bazel run demo --verbose_failures --noshow_progress
-      - run: bazel test ... --verbose_failures --noshow_progress
-
-  clippy:
-    name: Clippy
-    runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request'
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@clippy
-      - run: cargo clippy --workspace --tests -- -Dclippy::all
-
-  clang-tidy:
-    name: Clang Tidy
-    runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request'
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v3
-      - name: Install clang-tidy
-        run: sudo apt-get install clang-tidy-11
-      - name: Run clang-tidy
-        run: clang-tidy-11 src/cxx.cc --warnings-as-errors=*
-
-  outdated:
-    name: Outdated
-    runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request'
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v3
-      - uses: dtolnay/install@cargo-outdated
-      - run: cargo outdated --workspace --exit-code 1

third-party/fixups/winapi/fixups.toml

@@ -1 +1,2 @@
-buildscript = []
+[[buildscript]]
+[buildscript.rustc_flags]

tools/buck/toolchains/BUCK

@@ -6,9 +6,11 @@ load("@prelude//toolchains:rust.bzl", "system_rust_toolchain")
 system_cxx_toolchain(
     name = "cxx",
     cxx_flags = ["-std=c++17"],
+    linker = "link.exe" if host_info().os.is_windows else None,
     link_flags = select({
-        "DEFAULT": ["-lstdc++"],
+        "config//os:linux": ["-lstdc++"],
         "config//os:macos": ["-lc++"],
+        "config//os:windows": [],
     }),
     visibility = ["PUBLIC"],
 )