| [ | 
 |   { | 
 |     "cmd": [], | 
 |     "name": "git" | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "git", | 
 |       "init", | 
 |       "[START_DIR]/gn" | 
 |     ], | 
 |     "infra_step": true, | 
 |     "name": "git.init", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "git", | 
 |       "fetch", | 
 |       "--tags", | 
 |       "https://gn.googlesource.com/gn", | 
 |       "" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "infra_step": true, | 
 |     "name": "git.fetch", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "git", | 
 |       "checkout", | 
 |       "FETCH_HEAD" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "infra_step": true, | 
 |     "name": "git.checkout", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "git", | 
 |       "rev-parse", | 
 |       "HEAD" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "infra_step": true, | 
 |     "name": "git.rev-parse", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "git", | 
 |       "fetch", | 
 |       "https://gn.googlesource.com/gn", | 
 |       "refs/changes/56/123456/7" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "infra_step": true, | 
 |     "name": "git.fetch 123456/7", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "git", | 
 |       "checkout", | 
 |       "FETCH_HEAD" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "infra_step": true, | 
 |     "name": "git.checkout 123456/7", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "cipd", | 
 |       "ensure", | 
 |       "-root", | 
 |       "[START_DIR]/cipd", | 
 |       "-ensure-file", | 
 |       "infra/ninja/${platform} version:1.8.2\nfuchsia/third_party/clang/${platform} integration", | 
 |       "-max-threads", | 
 |       "0", | 
 |       "-json-output", | 
 |       "/path/to/tmp/json" | 
 |     ], | 
 |     "infra_step": true, | 
 |     "name": "ensure_installed", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_LOG_LINE@json.output@{@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@      {@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-integration-----\", @@@", | 
 |       "@@@STEP_LOG_LINE@json.output@        \"package\": \"fuchsia/third_party/clang/resolved-platform\"@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@      }, @@@", | 
 |       "@@@STEP_LOG_LINE@json.output@      {@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-version:1.8.2---\", @@@", | 
 |       "@@@STEP_LOG_LINE@json.output@        \"package\": \"infra/ninja/resolved-platform\"@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@      }@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@    ]@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@  }@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@}@@@", | 
 |       "@@@STEP_LOG_END@json.output@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "cipd", | 
 |       "ensure", | 
 |       "-root", | 
 |       "[CACHE]/macos_sdk", | 
 |       "-ensure-file", | 
 |       "infra/tools/mac_toolchain/${platform} git_revision:e9b1fe29fe21a1cd36428c43ea2aba244bd31280", | 
 |       "-max-threads", | 
 |       "0", | 
 |       "-json-output", | 
 |       "/path/to/tmp/json" | 
 |     ], | 
 |     "infra_step": true, | 
 |     "name": "ensure_installed (2)", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_LOG_LINE@json.output@{@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@      {@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:e9b\", @@@", | 
 |       "@@@STEP_LOG_LINE@json.output@        \"package\": \"infra/tools/mac_toolchain/resolved-platform\"@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@      }@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@    ]@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@  }@@@", | 
 |       "@@@STEP_LOG_LINE@json.output@}@@@", | 
 |       "@@@STEP_LOG_END@json.output@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "[CACHE]/macos_sdk/mac_toolchain", | 
 |       "install", | 
 |       "-kind", | 
 |       "mac", | 
 |       "-xcode-version", | 
 |       "12b5025f", | 
 |       "-output-dir", | 
 |       "[CACHE]/macos_sdk/XCode.app" | 
 |     ], | 
 |     "infra_step": true, | 
 |     "name": "install xcode" | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "sudo", | 
 |       "xcode-select", | 
 |       "--switch", | 
 |       "[CACHE]/macos_sdk/XCode.app" | 
 |     ], | 
 |     "infra_step": true, | 
 |     "name": "select XCode" | 
 |   }, | 
 |   { | 
 |     "cmd": [], | 
 |     "name": "debug" | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "xcrun", | 
 |       "--show-sdk-path" | 
 |     ], | 
 |     "name": "debug.xcrun sdk-path", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@", | 
 |       "@@@STEP_LOG_LINE@raw_io.output[sdk-path]@/some/xcode/path@@@", | 
 |       "@@@STEP_LOG_END@raw_io.output[sdk-path]@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "xcrun", | 
 |       "--toolchain", | 
 |       "clang", | 
 |       "clang++", | 
 |       "-xc++", | 
 |       "-fsyntax-only", | 
 |       "-Wp,-v", | 
 |       "-" | 
 |     ], | 
 |     "name": "debug.xcrun toolchain", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@", | 
 |       "@@@STEP_LOG_LINE@raw_io.output[toolchain]@[CACHE]/macos_sdk/XCode.app/include/c++/v1@@@", | 
 |       "@@@STEP_LOG_END@raw_io.output[toolchain]@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [], | 
 |     "name": "debug.mac-amd64", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "python", | 
 |       "-u", | 
 |       "[START_DIR]/gn/build/gen.py", | 
 |       "-d" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "debug.mac-amd64.generate", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "[START_DIR]/cipd/ninja", | 
 |       "-C", | 
 |       "[START_DIR]/gn/out" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "debug.mac-amd64.build", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "[START_DIR]/gn/out/gn_unittests" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "debug.mac-amd64.test", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [], | 
 |     "name": "release" | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "xcrun", | 
 |       "--show-sdk-path" | 
 |     ], | 
 |     "name": "release.xcrun sdk-path", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@", | 
 |       "@@@STEP_LOG_LINE@raw_io.output[sdk-path]@/some/xcode/path@@@", | 
 |       "@@@STEP_LOG_END@raw_io.output[sdk-path]@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "xcrun", | 
 |       "--toolchain", | 
 |       "clang", | 
 |       "clang++", | 
 |       "-xc++", | 
 |       "-fsyntax-only", | 
 |       "-Wp,-v", | 
 |       "-" | 
 |     ], | 
 |     "name": "release.xcrun toolchain", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@", | 
 |       "@@@STEP_LOG_LINE@raw_io.output[toolchain]@[CACHE]/macos_sdk/XCode.app/include/c++/v1@@@", | 
 |       "@@@STEP_LOG_END@raw_io.output[toolchain]@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [], | 
 |     "name": "release.mac-amd64", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "python", | 
 |       "-u", | 
 |       "[START_DIR]/gn/build/gen.py", | 
 |       "--use-lto", | 
 |       "--use-icf" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "release.mac-amd64.generate", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "[START_DIR]/cipd/ninja", | 
 |       "-C", | 
 |       "[START_DIR]/gn/out" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "release.mac-amd64.build", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "[START_DIR]/gn/out/gn_unittests" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=x86_64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "release.mac-amd64.test", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "xcrun", | 
 |       "--show-sdk-path" | 
 |     ], | 
 |     "name": "release.xcrun sdk-path (2)", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@", | 
 |       "@@@STEP_LOG_LINE@raw_io.output[sdk-path]@/some/xcode/path@@@", | 
 |       "@@@STEP_LOG_END@raw_io.output[sdk-path]@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "xcrun", | 
 |       "--toolchain", | 
 |       "clang", | 
 |       "clang++", | 
 |       "-xc++", | 
 |       "-fsyntax-only", | 
 |       "-Wp,-v", | 
 |       "-" | 
 |     ], | 
 |     "name": "release.xcrun toolchain (2)", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@", | 
 |       "@@@STEP_LOG_LINE@raw_io.output[toolchain]@[CACHE]/macos_sdk/XCode.app/include/c++/v1@@@", | 
 |       "@@@STEP_LOG_END@raw_io.output[toolchain]@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [], | 
 |     "name": "release.mac-arm64", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@1@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "python", | 
 |       "-u", | 
 |       "[START_DIR]/gn/build/gen.py", | 
 |       "--use-lto", | 
 |       "--use-icf" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=arm64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=arm64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "release.mac-arm64.generate", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "[START_DIR]/cipd/ninja", | 
 |       "-C", | 
 |       "[START_DIR]/gn/out" | 
 |     ], | 
 |     "cwd": "[START_DIR]/gn", | 
 |     "env": { | 
 |       "AR": "[START_DIR]/cipd/bin/llvm-ar", | 
 |       "CC": "[START_DIR]/cipd/bin/clang", | 
 |       "CFLAGS": "--target=arm64-apple-darwin --sysroot=/some/xcode/path -nostdinc++ -cxx-isystem [CACHE]/macos_sdk/XCode.app/include/c++/v1", | 
 |       "CXX": "[START_DIR]/cipd/bin/clang++", | 
 |       "LDFLAGS": "--target=arm64-apple-darwin --sysroot=/some/xcode/path" | 
 |     }, | 
 |     "name": "release.mac-arm64.build", | 
 |     "~followup_annotations": [ | 
 |       "@@@STEP_NEST_LEVEL@2@@@" | 
 |     ] | 
 |   }, | 
 |   { | 
 |     "cmd": [ | 
 |       "sudo", | 
 |       "xcode-select", | 
 |       "--reset" | 
 |     ], | 
 |     "infra_step": true, | 
 |     "name": "reset XCode" | 
 |   }, | 
 |   { | 
 |     "name": "$result" | 
 |   } | 
 | ] |