Add Windows version of --trim tests

Author: topolarity

pipelines/main/launch_unsigned_jobs.yml

@@ -84,7 +84,8 @@ steps:
           buildkite-agent pipeline upload .buildkite/pipelines/main/misc/doctest.yml
           buildkite-agent pipeline upload .buildkite/pipelines/main/misc/pdf_docs/build_pdf_docs.yml
           buildkite-agent pipeline upload .buildkite/pipelines/main/misc/embedding.yml
-          buildkite-agent pipeline upload .buildkite/pipelines/main/misc/trimming.yml
+          buildkite-agent pipeline upload .buildkite/pipelines/main/misc/trimming_linux.yml
+          buildkite-agent pipeline upload .buildkite/pipelines/main/misc/trimming_windows.yml
           buildkite-agent pipeline upload .buildkite/pipelines/main/misc/llvmpasses.yml
           # buildkite-agent pipeline upload .buildkite/pipelines/main/misc/whitespace.yml # Currently runs in GitHub Actions instead of Buildkite
 

pipelines/main/misc/trimming.yml renamed to pipelines/main/misc/trimming_linux.yml

@@ -1,8 +1,8 @@
 steps:
   - group: "Check"
     steps:
-      - label: "trimming"
-        key: "trimming"
+      - label: ":linux: trimming"
+        key: "trimming_x86_64-linux-gnu"
         depends_on:
           - "build_x86_64-linux-gnu"
         plugins:

pipelines/main/misc/trimming_windows.yml

@@ -0,0 +1,28 @@
+steps:
+  - group: "Check"
+    steps:
+      - label: ":windows: trimming"
+        key: "trimming_x86_64-w64-mingw32"
+        depends_on:
+          - "build_x86_64-w64-mingw32"
+        plugins:
+          - JuliaCI/external-buildkite#v1:
+              version: "./.buildkite-external-version"
+              repo_url: "https://github.com/JuliaCI/julia-buildkite"
+        if: | # We only run the `trimming` job on Julia 1.12 and later.
+          (pipeline.slug != "julia-release-1-dot-10") && (pipeline.slug != "julia-release-1-dot-11")
+        commands: |
+          # Download pre-built julia, extract into `usr/`
+          buildkite-agent artifact download --step "build_x86_64-w64-mingw32" 'julia-*-windows-x86_64.tar.gz' .
+          mkdir -p usr
+          tar -C usr --strip-components=1 -zxf julia-*-windows-x86_64.tar.gz
+          rm -f julia-*-windows-x86_64.tar.gz
+
+          make --output-sync -j$${JULIA_CPU_THREADS:?} -C test/trimming check JULIA="$$(pwd)/usr/bin/julia" BIN="$$(pwd)/usr/bin"
+        timeout_in_minutes: 60
+        agents:
+          queue: "julia"
+          os: "windows"
+          arch: "x86_64"
+        env:
+          JULIA_SHELL: "/bin/bash"