Validate all nine RIDs and NuGet with persistent Woodpecker caches

build/linux-toolchain/zig-cross.py

@@ -173,7 +173,10 @@ def execute(config, tool, incoming):
                 inputs.append(flag)
         if not output:
             raise SystemExit("Darwin libtool adapter needs -o")
-        command = [config["zig"], "ar", "--format=darwin", "rcs", output, *inputs]
+        libtool = shutil.which('llvm-libtool-darwin') or shutil.which('llvm-libtool-darwin-16')
+        if not libtool:
+            raise SystemExit('The pinned image must provide llvm-libtool-darwin to flatten archive dependencies')
+        command = [libtool, '-static', '-o', output, *inputs]
     if tool in ('ar', 'libtool'):
         # Never leave a truncated archive behind when disk/network/job failures
         # interrupt archiving. GN response files contain a complete member list.