Add Metal.jl reverse CI.

Author: maleadt

.buildkite/pipeline.yml

@@ -43,6 +43,29 @@ steps:
     if: build.message !~ /\[skip tests\]/ && !build.pull_request.draft
     timeout_in_minutes: 60
 
+  - label: "Metal.jl"
+    plugins:
+      - JuliaCI/julia#v1:
+          version: 1.8
+      - JuliaCI/julia-coverage#v1:
+          codecov: true
+    command: |
+      julia -e 'using Pkg;
+
+                println("--- :julia: Instantiating project");
+                Pkg.develop(PackageSpec(path=pwd()));
+                Pkg.add(PackageSpec(name="Metal", rev="main",
+                                    url="https://github.com/JuliaGPU/Metal.jl.git"));
+                Pkg.build();
+
+                println("+++ :julia: Running tests");
+                Pkg.test("Metal"; coverage=true);'
+    agents:
+      queue: "juliagpu"
+      metal: "*"
+    if: build.message !~ /\[skip tests\]/ && !build.pull_request.draft
+    timeout_in_minutes: 120
+
 #  - label: "AMDGPU.jl"
 #    plugins:
 #      - JuliaCI/julia#v1: