ci: add distribution builds for Windows

.github/workflows/ci.yml

@@ -104,3 +104,29 @@ jobs:
           name: dist-linux-i686
           path: output/rsjsonnet-linux-i686
           if-no-files-found: error
+
+  build-dist-linux:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Pull image
+        run: docker pull debian:buster
+      - name: Build
+        run: |
+          docker run \
+            -v "$(pwd):/workdir" \
+            -w /workdir \
+            debian:buster \
+            bash ./ci/build-dist-windows.sh
+      - name: Upload windows-x86_64 artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist-windows-x86_64
+          path: output/rsjsonnet-windows-x86_64
+          if-no-files-found: error
+      - name: Upload windows-i686 artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist-windows-i686
+          path: output/rsjsonnet-windows-i686
+          if-no-files-found: error

ci/build-dist-windows.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+echo "::group::Install dependencies"
+apt-get update
+apt-get install -y --no-install-recommends gcc gcc-mingw-w64-x86-64 gcc-mingw-w64-i686
+echo "::endgroup::"
+
+echo "::group::Install Rust"
+
+rust_version="$(cat "ci/rust-versions/stable.txt")"
+
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
+  sh -s -- -y --default-toolchain "$rust_version" --profile minimal \
+    -t x86_64-pc-windows-gnu \
+    -t i686-pc-windows-gnu
+
+# shellcheck disable=SC1090
+. "$HOME/.cargo/env"
+
+echo "::endgroup::"
+
+export CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1
+export CARGO_PROFILE_RELEASE_CODEGEN_PANIC=abort
+export CARGO_PROFILE_RELEASE_STRIP=debuginfo
+
+echo "::group::Fetch Rust dependencies"
+cargo fetch --locked
+mkdir output
+echo "::endgroup::"
+
+echo "::group::Build x86_64"
+cargo build -p rsjsonnet --target x86_64-pc-windows-gnu --release --frozen
+mkdir output/rsjsonnet-linux-x86_64
+cp -t output/rsjsonnet-linux-x86_64 target/x86_64-pc-windows-gnu/release/rsjsonnet.exe
+echo "::endgroup::"
+
+echo "::group::Build i686"
+cargo build -p rsjsonnet --target i686-pc-windows-gnu --release --frozen
+mkdir output/rsjsonnet-linux-i686
+cp -t output/rsjsonnet-linux-i686 target/i686-pc-windows-gnu/release/rsjsonnet.exe
+echo "::endgroup::"