diff --git a/recipe_modules/repo_util/api.py b/recipe_modules/repo_util/api.py
index 858d3bb..91e22a4 100644
--- a/recipe_modules/repo_util/api.py
+++ b/recipe_modules/repo_util/api.py
@@ -49,7 +49,6 @@
       git_url = self.m.properties['git_url']
       git_id = self.m.properties['git_ref']
       git_ref = self.m.properties['git_ref']
-
     # Inner function to clobber the cache
     def _ClobberCache():
       # Ensure depot tools is in the path to prevent problems with vpython not
diff --git a/recipe_modules/repo_util/examples/full.expected/monorepo_wrong_host.json b/recipe_modules/repo_util/examples/full.expected/monorepo_wrong_host.json
index 597bd92..76543d0 100644
--- a/recipe_modules/repo_util/examples/full.expected/monorepo_wrong_host.json
+++ b/recipe_modules/repo_util/examples/full.expected/monorepo_wrong_host.json
@@ -1005,7 +1005,7 @@
       "Traceback (most recent call last):",
       "  File \"RECIPE_REPO[flutter]/recipe_modules/repo_util/examples/full.py\", line 32, in RunSteps",
       "    api.repo_util.monorepo_checkout(api.path['start_dir'], {}, {})",
-      "  File \"RECIPE_REPO[flutter]/recipe_modules/repo_util/api.py\", line 126, in monorepo_checkout",
+      "  File \"RECIPE_REPO[flutter]/recipe_modules/repo_util/api.py\", line 125, in monorepo_checkout",
       "    raise ValueError(",
       "ValueError('Input reference is not on dart.googlesource.com/monorepo')"
     ]
diff --git a/recipe_modules/repo_util/examples/unsupported.expected/unsupported.json b/recipe_modules/repo_util/examples/unsupported.expected/unsupported.json
index 622f444..c487821 100644
--- a/recipe_modules/repo_util/examples/unsupported.expected/unsupported.json
+++ b/recipe_modules/repo_util/examples/unsupported.expected/unsupported.json
@@ -9,7 +9,7 @@
       "Traceback (most recent call last):",
       "  File \"RECIPE_REPO[flutter]/recipe_modules/repo_util/examples/unsupported.py\", line 15, in RunSteps",
       "    api.repo_util.checkout('unsupported_repo', repo_dir)",
-      "  File \"RECIPE_REPO[flutter]/recipe_modules/repo_util/api.py\", line 201, in checkout",
+      "  File \"RECIPE_REPO[flutter]/recipe_modules/repo_util/api.py\", line 200, in checkout",
       "    raise ValueError('Unsupported repo: %s' % name)",
       "ValueError('Unsupported repo: unsupported_repo')"
     ]
diff --git a/recipe_modules/shard_util_v2/api.py b/recipe_modules/shard_util_v2/api.py
index d563dc1..d1a593f 100644
--- a/recipe_modules/shard_util_v2/api.py
+++ b/recipe_modules/shard_util_v2/api.py
@@ -401,7 +401,7 @@
           self.m.cas.download(
               'Download for build %s and cas key %s' % (build_id, build_name),
               cas_out_dict['full_build'],
-              out_build_paths.join(build_name)
+              out_build_paths
         )
 
   def archive_full_build(self, build_dir, target):
diff --git a/recipe_modules/shard_util_v2/examples/full.expected/presubmit_led.json b/recipe_modules/shard_util_v2/examples/full.expected/presubmit_led.json
index f5215e1..9ea86f8 100644
--- a/recipe_modules/shard_util_v2/examples/full.expected/presubmit_led.json
+++ b/recipe_modules/shard_util_v2/examples/full.expected/presubmit_led.json
@@ -1296,7 +1296,7 @@
       "-digest",
       "123",
       "-dir",
-      "[CLEANUP]/out/builder-subbuild2"
+      "[CLEANUP]/out"
     ],
     "infra_step": true,
     "luci_context": {
diff --git a/recipes/engine_v2/engine_v2.expected/basic.json b/recipes/engine_v2/engine_v2.expected/basic.json
deleted file mode 100644
index 389d254..0000000
--- a/recipes/engine_v2/engine_v2.expected/basic.json
+++ /dev/null
@@ -1,489 +0,0 @@
-[
-  {
-    "cmd": [],
-    "name": "Checkout flutter/engine"
-  },
-  {
-    "cmd": [
-      "python3",
-      "-u",
-      "RECIPE_MODULE[depot_tools::git]/resources/git_setup.py",
-      "--path",
-      "[START_DIR]/engine",
-      "--url",
-      "https://flutter.googlesource.com/mirrors/engine"
-    ],
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Checkout flutter/engine.git setup",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "fetch",
-      "origin",
-      "--recurse-submodules",
-      "--progress",
-      "--tags"
-    ],
-    "cwd": "[START_DIR]/engine",
-    "env": {
-      "PATH": "RECIPE_REPO[depot_tools]:<PATH>"
-    },
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Checkout flutter/engine.git fetch",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "checkout",
-      "-f",
-      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
-    ],
-    "cwd": "[START_DIR]/engine",
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Checkout flutter/engine.git checkout",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "rev-parse",
-      "HEAD"
-    ],
-    "cwd": "[START_DIR]/engine",
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Checkout flutter/engine.read revision",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@",
-      "@@@STEP_TEXT@<br/>checked out 'deadbeef'<br/>@@@",
-      "@@@SET_BUILD_PROPERTY@got_revision@\"deadbeef\"@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "clean",
-      "-f",
-      "-d",
-      "-x"
-    ],
-    "cwd": "[START_DIR]/engine",
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Checkout flutter/engine.git clean",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "submodule",
-      "sync"
-    ],
-    "cwd": "[START_DIR]/engine",
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Checkout flutter/engine.submodule sync",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "git",
-      "submodule",
-      "update",
-      "--init",
-      "--recursive"
-    ],
-    "cwd": "[START_DIR]/engine",
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "Checkout flutter/engine.submodule update",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [],
-    "name": "launch builds"
-  },
-  {
-    "cmd": [
-      "bb",
-      "batch",
-      "-host",
-      "cr-buildbucket.appspot.com"
-    ],
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "launch builds.schedule",
-    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Staging Engine Drone\", \"project\": \"proj\"}, \"exe\": {\"cipdVersion\": \"refs/heads/main\"}, \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"github.com\", \"patchset\": \"7\", \"project\": \"repo/a\"}], \"gitilesCommit\": {\"host\": \"github.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"repo/a\", \"ref\": \"refs/heads/main\"}, \"priority\": 25, \"properties\": {\"build\": {\"generators\": [{\"name\": \"generator1\", \"script\": \"script1.sh\"}], \"gn\": [\"--ios\"], \"name\": \"ios_debug\", \"ninja\": {\"config\": \"ios_debug\", \"targets\": []}}, \"builds\": [{\"generators\": [{\"name\": \"generator1\", \"script\": \"script1.sh\"}], \"gn\": [\"--ios\"], \"name\": \"ios_debug\", \"ninja\": {\"config\": \"ios_debug\", \"targets\": []}}], \"environment\": \"Staging\", \"recipe\": \"engine_v2/builder\", \"tests\": []}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@",
-      "@@@STEP_LOG_LINE@json.output@{@@@",
-      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@    {@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"scheduleBuild\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"builder\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@          \"bucket\": \"try\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"builder\": \"builder-subbuild1\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"project\": \"fuchsia\"@@@",
-      "@@@STEP_LOG_LINE@json.output@        }, @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"id\": \"8945511751514863186\"@@@",
-      "@@@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@@@",
-      "@@@STEP_LOG_LINE@request@{@@@",
-      "@@@STEP_LOG_LINE@request@  \"requests\": [@@@",
-      "@@@STEP_LOG_LINE@request@    {@@@",
-      "@@@STEP_LOG_LINE@request@      \"scheduleBuild\": {@@@",
-      "@@@STEP_LOG_LINE@request@        \"builder\": {@@@",
-      "@@@STEP_LOG_LINE@request@          \"bucket\": \"try\", @@@",
-      "@@@STEP_LOG_LINE@request@          \"builder\": \"Linux Staging Engine Drone\", @@@",
-      "@@@STEP_LOG_LINE@request@          \"project\": \"proj\"@@@",
-      "@@@STEP_LOG_LINE@request@        }, @@@",
-      "@@@STEP_LOG_LINE@request@        \"exe\": {@@@",
-      "@@@STEP_LOG_LINE@request@          \"cipdVersion\": \"refs/heads/main\"@@@",
-      "@@@STEP_LOG_LINE@request@        }, @@@",
-      "@@@STEP_LOG_LINE@request@        \"experimental\": \"NO\", @@@",
-      "@@@STEP_LOG_LINE@request@        \"experiments\": {@@@",
-      "@@@STEP_LOG_LINE@request@          \"luci.buildbucket.parent_tracking\": false@@@",
-      "@@@STEP_LOG_LINE@request@        }, @@@",
-      "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", @@@",
-      "@@@STEP_LOG_LINE@request@        \"gerritChanges\": [@@@",
-      "@@@STEP_LOG_LINE@request@          {@@@",
-      "@@@STEP_LOG_LINE@request@            \"change\": \"123456\", @@@",
-      "@@@STEP_LOG_LINE@request@            \"host\": \"github.com\", @@@",
-      "@@@STEP_LOG_LINE@request@            \"patchset\": \"7\", @@@",
-      "@@@STEP_LOG_LINE@request@            \"project\": \"repo/a\"@@@",
-      "@@@STEP_LOG_LINE@request@          }@@@",
-      "@@@STEP_LOG_LINE@request@        ], @@@",
-      "@@@STEP_LOG_LINE@request@        \"gitilesCommit\": {@@@",
-      "@@@STEP_LOG_LINE@request@          \"host\": \"github.com\", @@@",
-      "@@@STEP_LOG_LINE@request@          \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", @@@",
-      "@@@STEP_LOG_LINE@request@          \"project\": \"repo/a\", @@@",
-      "@@@STEP_LOG_LINE@request@          \"ref\": \"refs/heads/main\"@@@",
-      "@@@STEP_LOG_LINE@request@        }, @@@",
-      "@@@STEP_LOG_LINE@request@        \"priority\": 25, @@@",
-      "@@@STEP_LOG_LINE@request@        \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@request@          \"build\": {@@@",
-      "@@@STEP_LOG_LINE@request@            \"generators\": [@@@",
-      "@@@STEP_LOG_LINE@request@              {@@@",
-      "@@@STEP_LOG_LINE@request@                \"name\": \"generator1\", @@@",
-      "@@@STEP_LOG_LINE@request@                \"script\": \"script1.sh\"@@@",
-      "@@@STEP_LOG_LINE@request@              }@@@",
-      "@@@STEP_LOG_LINE@request@            ], @@@",
-      "@@@STEP_LOG_LINE@request@            \"gn\": [@@@",
-      "@@@STEP_LOG_LINE@request@              \"--ios\"@@@",
-      "@@@STEP_LOG_LINE@request@            ], @@@",
-      "@@@STEP_LOG_LINE@request@            \"name\": \"ios_debug\", @@@",
-      "@@@STEP_LOG_LINE@request@            \"ninja\": {@@@",
-      "@@@STEP_LOG_LINE@request@              \"config\": \"ios_debug\", @@@",
-      "@@@STEP_LOG_LINE@request@              \"targets\": []@@@",
-      "@@@STEP_LOG_LINE@request@            }@@@",
-      "@@@STEP_LOG_LINE@request@          }, @@@",
-      "@@@STEP_LOG_LINE@request@          \"builds\": [@@@",
-      "@@@STEP_LOG_LINE@request@            {@@@",
-      "@@@STEP_LOG_LINE@request@              \"generators\": [@@@",
-      "@@@STEP_LOG_LINE@request@                {@@@",
-      "@@@STEP_LOG_LINE@request@                  \"name\": \"generator1\", @@@",
-      "@@@STEP_LOG_LINE@request@                  \"script\": \"script1.sh\"@@@",
-      "@@@STEP_LOG_LINE@request@                }@@@",
-      "@@@STEP_LOG_LINE@request@              ], @@@",
-      "@@@STEP_LOG_LINE@request@              \"gn\": [@@@",
-      "@@@STEP_LOG_LINE@request@                \"--ios\"@@@",
-      "@@@STEP_LOG_LINE@request@              ], @@@",
-      "@@@STEP_LOG_LINE@request@              \"name\": \"ios_debug\", @@@",
-      "@@@STEP_LOG_LINE@request@              \"ninja\": {@@@",
-      "@@@STEP_LOG_LINE@request@                \"config\": \"ios_debug\", @@@",
-      "@@@STEP_LOG_LINE@request@                \"targets\": []@@@",
-      "@@@STEP_LOG_LINE@request@              }@@@",
-      "@@@STEP_LOG_LINE@request@            }@@@",
-      "@@@STEP_LOG_LINE@request@          ], @@@",
-      "@@@STEP_LOG_LINE@request@          \"environment\": \"Staging\", @@@",
-      "@@@STEP_LOG_LINE@request@          \"recipe\": \"engine_v2/builder\", @@@",
-      "@@@STEP_LOG_LINE@request@          \"tests\": []@@@",
-      "@@@STEP_LOG_LINE@request@        }, @@@",
-      "@@@STEP_LOG_LINE@request@        \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", @@@",
-      "@@@STEP_LOG_LINE@request@        \"swarming\": {@@@",
-      "@@@STEP_LOG_LINE@request@          \"parentRunId\": \"fake-task-id\"@@@",
-      "@@@STEP_LOG_LINE@request@        }, @@@",
-      "@@@STEP_LOG_LINE@request@        \"tags\": [@@@",
-      "@@@STEP_LOG_LINE@request@          {@@@",
-      "@@@STEP_LOG_LINE@request@            \"key\": \"cq_experimental\", @@@",
-      "@@@STEP_LOG_LINE@request@            \"value\": \"false\"@@@",
-      "@@@STEP_LOG_LINE@request@          }, @@@",
-      "@@@STEP_LOG_LINE@request@          {@@@",
-      "@@@STEP_LOG_LINE@request@            \"key\": \"parent_buildbucket_id\", @@@",
-      "@@@STEP_LOG_LINE@request@            \"value\": \"8945511751514863184\"@@@",
-      "@@@STEP_LOG_LINE@request@          }, @@@",
-      "@@@STEP_LOG_LINE@request@          {@@@",
-      "@@@STEP_LOG_LINE@request@            \"key\": \"user_agent\", @@@",
-      "@@@STEP_LOG_LINE@request@            \"value\": \"recipe\"@@@",
-      "@@@STEP_LOG_LINE@request@          }@@@",
-      "@@@STEP_LOG_LINE@request@        ]@@@",
-      "@@@STEP_LOG_LINE@request@      }@@@",
-      "@@@STEP_LOG_LINE@request@    }@@@",
-      "@@@STEP_LOG_LINE@request@  ]@@@",
-      "@@@STEP_LOG_LINE@request@}@@@",
-      "@@@STEP_LOG_END@request@@@",
-      "@@@STEP_LINK@8945511751514863186@https://cr-buildbucket.appspot.com/build/8945511751514863186@@@"
-    ]
-  },
-  {
-    "cmd": [],
-    "name": "collect builds"
-  },
-  {
-    "cmd": [],
-    "name": "collect builds.collect",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "bb",
-      "collect",
-      "-host",
-      "cr-buildbucket.appspot.com",
-      "-interval",
-      "20s",
-      "8945511751514863186"
-    ],
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "collect builds.collect.wait",
-    "timeout": 86400,
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@2@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "bb",
-      "batch",
-      "-host",
-      "cr-buildbucket.appspot.com"
-    ],
-    "infra_step": true,
-    "luci_context": {
-      "realm": {
-        "name": "proj:try"
-      },
-      "resultdb": {
-        "current_invocation": {
-          "name": "invocations/build:8945511751514863184",
-          "update_token": "token"
-        },
-        "hostname": "rdbhost"
-      }
-    },
-    "name": "collect builds.collect.get",
-    "stdin": "{\"requests\": [{\"getBuild\": {\"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,infra.swarming.taskId,input,number,output,startTime,status,summaryMarkdown,updateTime\", \"id\": \"8945511751514863186\"}}]}",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@2@@@",
-      "@@@STEP_LOG_LINE@json.output@{@@@",
-      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@    {@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"getBuild\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"builder\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@          \"bucket\": \"try\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"builder\": \"builder-subbuild1\", @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"project\": \"fuchsia\"@@@",
-      "@@@STEP_LOG_LINE@json.output@        }, @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"createTime\": \"2018-05-25T23:50:17Z\", @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"createdBy\": \"project:fuchsia\", @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"id\": \"8945511751514863186\", @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"infra\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@          \"resultdb\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@            \"invocation\": \"invocations/build:8945511751514863186\"@@@",
-      "@@@STEP_LOG_LINE@json.output@          }, @@@",
-      "@@@STEP_LOG_LINE@json.output@          \"swarming\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@            \"priority\": 30, @@@",
-      "@@@STEP_LOG_LINE@json.output@            \"taskId\": \"abc123\"@@@",
-      "@@@STEP_LOG_LINE@json.output@          }@@@",
-      "@@@STEP_LOG_LINE@json.output@        }, @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"input\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@          \"gerritChanges\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@            {@@@",
-      "@@@STEP_LOG_LINE@json.output@              \"change\": \"123456\", @@@",
-      "@@@STEP_LOG_LINE@json.output@              \"host\": \"chromium-review.googlesource.com\", @@@",
-      "@@@STEP_LOG_LINE@json.output@              \"patchset\": \"7\", @@@",
-      "@@@STEP_LOG_LINE@json.output@              \"project\": \"fuchsia\"@@@",
-      "@@@STEP_LOG_LINE@json.output@            }@@@",
-      "@@@STEP_LOG_LINE@json.output@          ]@@@",
-      "@@@STEP_LOG_LINE@json.output@        }, @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"output\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@          \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@            \"test_orchestration_inputs_hash\": \"abc\"@@@",
-      "@@@STEP_LOG_LINE@json.output@          }@@@",
-      "@@@STEP_LOG_LINE@json.output@        }, @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"status\": \"SUCCESS\", @@@",
-      "@@@STEP_LOG_LINE@json.output@        \"tags\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@          {@@@",
-      "@@@STEP_LOG_LINE@json.output@            \"key\": \"cq_experimental\", @@@",
-      "@@@STEP_LOG_LINE@json.output@            \"value\": \"false\"@@@",
-      "@@@STEP_LOG_LINE@json.output@          }@@@",
-      "@@@STEP_LOG_LINE@json.output@        ]@@@",
-      "@@@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@@@",
-      "@@@STEP_LOG_LINE@request@{@@@",
-      "@@@STEP_LOG_LINE@request@  \"requests\": [@@@",
-      "@@@STEP_LOG_LINE@request@    {@@@",
-      "@@@STEP_LOG_LINE@request@      \"getBuild\": {@@@",
-      "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,infra.swarming.taskId,input,number,output,startTime,status,summaryMarkdown,updateTime\", @@@",
-      "@@@STEP_LOG_LINE@request@        \"id\": \"8945511751514863186\"@@@",
-      "@@@STEP_LOG_LINE@request@      }@@@",
-      "@@@STEP_LOG_LINE@request@    }@@@",
-      "@@@STEP_LOG_LINE@request@  ]@@@",
-      "@@@STEP_LOG_LINE@request@}@@@",
-      "@@@STEP_LOG_END@request@@@",
-      "@@@STEP_LINK@8945511751514863186@https://cr-buildbucket.appspot.com/build/8945511751514863186@@@"
-    ]
-  },
-  {
-    "cmd": [],
-    "name": "display builds"
-  },
-  {
-    "cmd": [],
-    "name": "display builds.builder-subbuild1",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@",
-      "@@@STEP_LINK@8945511751514863186@https://cr-buildbucket.appspot.com/build/8945511751514863186@@@"
-    ]
-  },
-  {
-    "cmd": [],
-    "name": "launch tests"
-  },
-  {
-    "cmd": [],
-    "name": "collect tests"
-  },
-  {
-    "cmd": [],
-    "name": "display tests"
-  },
-  {
-    "name": "$result"
-  }
-]
\ No newline at end of file
diff --git a/recipes/engine_v2/engine_v2.expected/basic_linux.json b/recipes/engine_v2/engine_v2.expected/basic_linux.json
new file mode 100644
index 0000000..a70f8a7
--- /dev/null
+++ b/recipes/engine_v2/engine_v2.expected/basic_linux.json
@@ -0,0 +1,1030 @@
+[
+  {
+    "cmd": [],
+    "name": "Checkout flutter/engine"
+  },
+  {
+    "cmd": [
+      "python3",
+      "-u",
+      "RECIPE_MODULE[depot_tools::git]/resources/git_setup.py",
+      "--path",
+      "[START_DIR]/engine",
+      "--url",
+      "https://flutter.googlesource.com/mirrors/engine"
+    ],
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git setup",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "fetch",
+      "origin",
+      "--recurse-submodules",
+      "--progress",
+      "--tags"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "env": {
+      "PATH": "RECIPE_REPO[depot_tools]:<PATH>"
+    },
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git fetch",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "checkout",
+      "-f",
+      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git checkout",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "rev-parse",
+      "HEAD"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.read revision",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
+      "@@@STEP_TEXT@<br/>checked out 'deadbeef'<br/>@@@",
+      "@@@SET_BUILD_PROPERTY@got_revision@\"deadbeef\"@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "clean",
+      "-f",
+      "-d",
+      "-x"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git clean",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "submodule",
+      "sync"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.submodule sync",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "submodule",
+      "update",
+      "--init",
+      "--recursive"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.submodule update",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [],
+    "name": "launch builds"
+  },
+  {
+    "cmd": [
+      "bb",
+      "batch",
+      "-host",
+      "cr-buildbucket.appspot.com"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "launch builds.schedule",
+    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Linux Staging Engine Drone\", \"project\": \"proj\"}, \"exe\": {\"cipdVersion\": \"refs/heads/main\"}, \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/engine\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/engine\", \"ref\": \"refs/heads/main\"}, \"priority\": 25, \"properties\": {\"build\": {\"generators\": [{\"name\": \"generator1\", \"script\": \"script1.sh\"}], \"gn\": [\"--ios\"], \"name\": \"ios_debug\", \"ninja\": {\"config\": \"ios_debug\", \"targets\": []}}, \"builds\": [{\"generators\": [{\"name\": \"generator1\", \"script\": \"script1.sh\"}], \"gn\": [\"--ios\"], \"name\": \"ios_debug\", \"ninja\": {\"config\": \"ios_debug\", \"targets\": []}}], \"environment\": \"Staging\", \"generators\": {\"tasks\": [{\"language\": \"python\", \"name\": \"Debug-FlutterMacOS.framework\", \"parameters\": [\"--variant\", \"host_profile\", \"--type\", \"engine\", \"--engine-capture-core-dump\"], \"script\": \"flutter/sky/tools/create_macos_framework.py\", \"type\": \"local\"}]}, \"recipe\": \"engine_v2/builder\", \"tests\": []}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"scheduleBuild\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"builder\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"bucket\": \"try\", @@@",
+      "@@@STEP_LOG_LINE@json.output@          \"builder\": \"builder-subbuild1\", @@@",
+      "@@@STEP_LOG_LINE@json.output@          \"project\": \"fuchsia\"@@@",
+      "@@@STEP_LOG_LINE@json.output@        }, @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"id\": \"8945511751514863186\"@@@",
+      "@@@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@@@",
+      "@@@STEP_LOG_LINE@request@{@@@",
+      "@@@STEP_LOG_LINE@request@  \"requests\": [@@@",
+      "@@@STEP_LOG_LINE@request@    {@@@",
+      "@@@STEP_LOG_LINE@request@      \"scheduleBuild\": {@@@",
+      "@@@STEP_LOG_LINE@request@        \"builder\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"bucket\": \"try\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"builder\": \"Linux Staging Engine Drone\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"project\": \"proj\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"exe\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"cipdVersion\": \"refs/heads/main\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"experimental\": \"NO\", @@@",
+      "@@@STEP_LOG_LINE@request@        \"experiments\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"luci.buildbucket.parent_tracking\": false@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", @@@",
+      "@@@STEP_LOG_LINE@request@        \"gerritChanges\": [@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"change\": \"123456\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"host\": \"flutter-review.googlesource.com\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"patchset\": \"7\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"project\": \"mirrors/engine\"@@@",
+      "@@@STEP_LOG_LINE@request@          }@@@",
+      "@@@STEP_LOG_LINE@request@        ], @@@",
+      "@@@STEP_LOG_LINE@request@        \"gitilesCommit\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"host\": \"flutter.googlesource.com\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"project\": \"mirrors/engine\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"ref\": \"refs/heads/main\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"priority\": 25, @@@",
+      "@@@STEP_LOG_LINE@request@        \"properties\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"build\": {@@@",
+      "@@@STEP_LOG_LINE@request@            \"generators\": [@@@",
+      "@@@STEP_LOG_LINE@request@              {@@@",
+      "@@@STEP_LOG_LINE@request@                \"name\": \"generator1\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"script\": \"script1.sh\"@@@",
+      "@@@STEP_LOG_LINE@request@              }@@@",
+      "@@@STEP_LOG_LINE@request@            ], @@@",
+      "@@@STEP_LOG_LINE@request@            \"gn\": [@@@",
+      "@@@STEP_LOG_LINE@request@              \"--ios\"@@@",
+      "@@@STEP_LOG_LINE@request@            ], @@@",
+      "@@@STEP_LOG_LINE@request@            \"name\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"ninja\": {@@@",
+      "@@@STEP_LOG_LINE@request@              \"config\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@              \"targets\": []@@@",
+      "@@@STEP_LOG_LINE@request@            }@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          \"builds\": [@@@",
+      "@@@STEP_LOG_LINE@request@            {@@@",
+      "@@@STEP_LOG_LINE@request@              \"generators\": [@@@",
+      "@@@STEP_LOG_LINE@request@                {@@@",
+      "@@@STEP_LOG_LINE@request@                  \"name\": \"generator1\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"script\": \"script1.sh\"@@@",
+      "@@@STEP_LOG_LINE@request@                }@@@",
+      "@@@STEP_LOG_LINE@request@              ], @@@",
+      "@@@STEP_LOG_LINE@request@              \"gn\": [@@@",
+      "@@@STEP_LOG_LINE@request@                \"--ios\"@@@",
+      "@@@STEP_LOG_LINE@request@              ], @@@",
+      "@@@STEP_LOG_LINE@request@              \"name\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@              \"ninja\": {@@@",
+      "@@@STEP_LOG_LINE@request@                \"config\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"targets\": []@@@",
+      "@@@STEP_LOG_LINE@request@              }@@@",
+      "@@@STEP_LOG_LINE@request@            }@@@",
+      "@@@STEP_LOG_LINE@request@          ], @@@",
+      "@@@STEP_LOG_LINE@request@          \"environment\": \"Staging\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"generators\": {@@@",
+      "@@@STEP_LOG_LINE@request@            \"tasks\": [@@@",
+      "@@@STEP_LOG_LINE@request@              {@@@",
+      "@@@STEP_LOG_LINE@request@                \"language\": \"python\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"name\": \"Debug-FlutterMacOS.framework\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"parameters\": [@@@",
+      "@@@STEP_LOG_LINE@request@                  \"--variant\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"host_profile\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"--type\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"engine\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"--engine-capture-core-dump\"@@@",
+      "@@@STEP_LOG_LINE@request@                ], @@@",
+      "@@@STEP_LOG_LINE@request@                \"script\": \"flutter/sky/tools/create_macos_framework.py\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"type\": \"local\"@@@",
+      "@@@STEP_LOG_LINE@request@              }@@@",
+      "@@@STEP_LOG_LINE@request@            ]@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          \"recipe\": \"engine_v2/builder\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"tests\": []@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", @@@",
+      "@@@STEP_LOG_LINE@request@        \"swarming\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"parentRunId\": \"fake-task-id\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"tags\": [@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"cq_experimental\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"false\"@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"parent_buildbucket_id\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"8945511751514863184\"@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"user_agent\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"recipe\"@@@",
+      "@@@STEP_LOG_LINE@request@          }@@@",
+      "@@@STEP_LOG_LINE@request@        ]@@@",
+      "@@@STEP_LOG_LINE@request@      }@@@",
+      "@@@STEP_LOG_LINE@request@    }@@@",
+      "@@@STEP_LOG_LINE@request@  ]@@@",
+      "@@@STEP_LOG_LINE@request@}@@@",
+      "@@@STEP_LOG_END@request@@@",
+      "@@@STEP_LINK@8945511751514863186@https://cr-buildbucket.appspot.com/build/8945511751514863186@@@"
+    ]
+  },
+  {
+    "cmd": [],
+    "name": "collect builds"
+  },
+  {
+    "cmd": [],
+    "name": "collect builds.collect",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "bb",
+      "collect",
+      "-host",
+      "cr-buildbucket.appspot.com",
+      "-interval",
+      "20s",
+      "8945511751514863186"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "collect builds.collect.wait",
+    "timeout": 86400,
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@2@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "bb",
+      "batch",
+      "-host",
+      "cr-buildbucket.appspot.com"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "collect builds.collect.get",
+    "stdin": "{\"requests\": [{\"getBuild\": {\"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,infra.swarming.taskId,input,number,output,startTime,status,summaryMarkdown,updateTime\", \"id\": \"8945511751514863186\"}}]}",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@2@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
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+      "RECIPE_MODULE[recipe_engine::json]/resources/read.py",
+      "[START_DIR]/engine/ci/builders/None.json",
+      "/path/to/tmp/json"
+    ],
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Read build config file",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
+  {
+    "name": "$result"
+  }
+]
\ No newline at end of file
diff --git a/recipes/engine_v2/engine_v2.expected/basic_mac.json b/recipes/engine_v2/engine_v2.expected/basic_mac.json
new file mode 100644
index 0000000..b4bfa12
--- /dev/null
+++ b/recipes/engine_v2/engine_v2.expected/basic_mac.json
@@ -0,0 +1,1235 @@
+[
+  {
+    "cmd": [],
+    "name": "Checkout flutter/engine"
+  },
+  {
+    "cmd": [
+      "python3",
+      "-u",
+      "RECIPE_MODULE[depot_tools::git]/resources/git_setup.py",
+      "--path",
+      "[START_DIR]/engine",
+      "--url",
+      "https://flutter.googlesource.com/mirrors/engine"
+    ],
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git setup",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "fetch",
+      "origin",
+      "--recurse-submodules",
+      "--progress",
+      "--tags"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "env": {
+      "PATH": "RECIPE_REPO[depot_tools]:<PATH>"
+    },
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git fetch",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "checkout",
+      "-f",
+      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git checkout",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "rev-parse",
+      "HEAD"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.read revision",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
+      "@@@STEP_TEXT@<br/>checked out 'deadbeef'<br/>@@@",
+      "@@@SET_BUILD_PROPERTY@got_revision@\"deadbeef\"@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "clean",
+      "-f",
+      "-d",
+      "-x"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.git clean",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "submodule",
+      "sync"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.submodule sync",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "submodule",
+      "update",
+      "--init",
+      "--recursive"
+    ],
+    "cwd": "[START_DIR]/engine",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Checkout flutter/engine.submodule update",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [],
+    "name": "launch builds"
+  },
+  {
+    "cmd": [
+      "bb",
+      "batch",
+      "-host",
+      "cr-buildbucket.appspot.com"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "launch builds.schedule",
+    "stdin": "{\"requests\": [{\"scheduleBuild\": {\"builder\": {\"bucket\": \"try\", \"builder\": \"Mac Staging Engine Drone\", \"project\": \"proj\"}, \"exe\": {\"cipdVersion\": \"refs/heads/main\"}, \"experimental\": \"NO\", \"experiments\": {\"luci.buildbucket.parent_tracking\": false}, \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", \"gerritChanges\": [{\"change\": \"123456\", \"host\": \"flutter-review.googlesource.com\", \"patchset\": \"7\", \"project\": \"mirrors/engine\"}], \"gitilesCommit\": {\"host\": \"flutter.googlesource.com\", \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", \"project\": \"mirrors/engine\", \"ref\": \"refs/heads/main\"}, \"priority\": 25, \"properties\": {\"archives\": [{\"destination\": \"bucket/c.txt\", \"name\": \"c.txt\", \"source\": \"/a/b/c.txt\"}], \"build\": {\"generators\": [{\"name\": \"generator1\", \"script\": \"script1.sh\"}], \"gn\": [\"--ios\"], \"name\": \"ios_debug\", \"ninja\": {\"config\": \"ios_debug\", \"targets\": []}}, \"builds\": [{\"generators\": [{\"name\": \"generator1\", \"script\": \"script1.sh\"}], \"gn\": [\"--ios\"], \"name\": \"ios_debug\", \"ninja\": {\"config\": \"ios_debug\", \"targets\": []}}], \"environment\": \"Staging\", \"generators\": {\"tasks\": [{\"language\": \"python\", \"name\": \"Debug-FlutterMacOS.framework\", \"parameters\": [\"--variant\", \"host_profile\", \"--type\", \"engine\", \"--engine-capture-core-dump\"], \"script\": \"flutter/sky/tools/create_macos_framework.py\", \"type\": \"local\"}]}, \"recipe\": \"engine_v2/builder\", \"tests\": []}, \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", \"swarming\": {\"parentRunId\": \"fake-task-id\"}, \"tags\": [{\"key\": \"cq_experimental\", \"value\": \"false\"}, {\"key\": \"parent_buildbucket_id\", \"value\": \"8945511751514863184\"}, {\"key\": \"user_agent\", \"value\": \"recipe\"}]}}]}",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"scheduleBuild\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"builder\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"bucket\": \"try\", @@@",
+      "@@@STEP_LOG_LINE@json.output@          \"builder\": \"builder-subbuild1\", @@@",
+      "@@@STEP_LOG_LINE@json.output@          \"project\": \"fuchsia\"@@@",
+      "@@@STEP_LOG_LINE@json.output@        }, @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"id\": \"8945511751514863186\"@@@",
+      "@@@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@@@",
+      "@@@STEP_LOG_LINE@request@{@@@",
+      "@@@STEP_LOG_LINE@request@  \"requests\": [@@@",
+      "@@@STEP_LOG_LINE@request@    {@@@",
+      "@@@STEP_LOG_LINE@request@      \"scheduleBuild\": {@@@",
+      "@@@STEP_LOG_LINE@request@        \"builder\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"bucket\": \"try\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"builder\": \"Mac Staging Engine Drone\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"project\": \"proj\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"exe\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"cipdVersion\": \"refs/heads/main\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"experimental\": \"NO\", @@@",
+      "@@@STEP_LOG_LINE@request@        \"experiments\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"luci.buildbucket.parent_tracking\": false@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,input,number,output,startTime,status,updateTime\", @@@",
+      "@@@STEP_LOG_LINE@request@        \"gerritChanges\": [@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"change\": \"123456\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"host\": \"flutter-review.googlesource.com\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"patchset\": \"7\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"project\": \"mirrors/engine\"@@@",
+      "@@@STEP_LOG_LINE@request@          }@@@",
+      "@@@STEP_LOG_LINE@request@        ], @@@",
+      "@@@STEP_LOG_LINE@request@        \"gitilesCommit\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"host\": \"flutter.googlesource.com\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"id\": \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"project\": \"mirrors/engine\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"ref\": \"refs/heads/main\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"priority\": 25, @@@",
+      "@@@STEP_LOG_LINE@request@        \"properties\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"archives\": [@@@",
+      "@@@STEP_LOG_LINE@request@            {@@@",
+      "@@@STEP_LOG_LINE@request@              \"destination\": \"bucket/c.txt\", @@@",
+      "@@@STEP_LOG_LINE@request@              \"name\": \"c.txt\", @@@",
+      "@@@STEP_LOG_LINE@request@              \"source\": \"/a/b/c.txt\"@@@",
+      "@@@STEP_LOG_LINE@request@            }@@@",
+      "@@@STEP_LOG_LINE@request@          ], @@@",
+      "@@@STEP_LOG_LINE@request@          \"build\": {@@@",
+      "@@@STEP_LOG_LINE@request@            \"generators\": [@@@",
+      "@@@STEP_LOG_LINE@request@              {@@@",
+      "@@@STEP_LOG_LINE@request@                \"name\": \"generator1\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"script\": \"script1.sh\"@@@",
+      "@@@STEP_LOG_LINE@request@              }@@@",
+      "@@@STEP_LOG_LINE@request@            ], @@@",
+      "@@@STEP_LOG_LINE@request@            \"gn\": [@@@",
+      "@@@STEP_LOG_LINE@request@              \"--ios\"@@@",
+      "@@@STEP_LOG_LINE@request@            ], @@@",
+      "@@@STEP_LOG_LINE@request@            \"name\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"ninja\": {@@@",
+      "@@@STEP_LOG_LINE@request@              \"config\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@              \"targets\": []@@@",
+      "@@@STEP_LOG_LINE@request@            }@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          \"builds\": [@@@",
+      "@@@STEP_LOG_LINE@request@            {@@@",
+      "@@@STEP_LOG_LINE@request@              \"generators\": [@@@",
+      "@@@STEP_LOG_LINE@request@                {@@@",
+      "@@@STEP_LOG_LINE@request@                  \"name\": \"generator1\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"script\": \"script1.sh\"@@@",
+      "@@@STEP_LOG_LINE@request@                }@@@",
+      "@@@STEP_LOG_LINE@request@              ], @@@",
+      "@@@STEP_LOG_LINE@request@              \"gn\": [@@@",
+      "@@@STEP_LOG_LINE@request@                \"--ios\"@@@",
+      "@@@STEP_LOG_LINE@request@              ], @@@",
+      "@@@STEP_LOG_LINE@request@              \"name\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@              \"ninja\": {@@@",
+      "@@@STEP_LOG_LINE@request@                \"config\": \"ios_debug\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"targets\": []@@@",
+      "@@@STEP_LOG_LINE@request@              }@@@",
+      "@@@STEP_LOG_LINE@request@            }@@@",
+      "@@@STEP_LOG_LINE@request@          ], @@@",
+      "@@@STEP_LOG_LINE@request@          \"environment\": \"Staging\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"generators\": {@@@",
+      "@@@STEP_LOG_LINE@request@            \"tasks\": [@@@",
+      "@@@STEP_LOG_LINE@request@              {@@@",
+      "@@@STEP_LOG_LINE@request@                \"language\": \"python\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"name\": \"Debug-FlutterMacOS.framework\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"parameters\": [@@@",
+      "@@@STEP_LOG_LINE@request@                  \"--variant\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"host_profile\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"--type\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"engine\", @@@",
+      "@@@STEP_LOG_LINE@request@                  \"--engine-capture-core-dump\"@@@",
+      "@@@STEP_LOG_LINE@request@                ], @@@",
+      "@@@STEP_LOG_LINE@request@                \"script\": \"flutter/sky/tools/create_macos_framework.py\", @@@",
+      "@@@STEP_LOG_LINE@request@                \"type\": \"local\"@@@",
+      "@@@STEP_LOG_LINE@request@              }@@@",
+      "@@@STEP_LOG_LINE@request@            ]@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          \"recipe\": \"engine_v2/builder\", @@@",
+      "@@@STEP_LOG_LINE@request@          \"tests\": []@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"requestId\": \"8945511751514863184-00000000-0000-0000-0000-000000001337\", @@@",
+      "@@@STEP_LOG_LINE@request@        \"swarming\": {@@@",
+      "@@@STEP_LOG_LINE@request@          \"parentRunId\": \"fake-task-id\"@@@",
+      "@@@STEP_LOG_LINE@request@        }, @@@",
+      "@@@STEP_LOG_LINE@request@        \"tags\": [@@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"cq_experimental\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"false\"@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"parent_buildbucket_id\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"8945511751514863184\"@@@",
+      "@@@STEP_LOG_LINE@request@          }, @@@",
+      "@@@STEP_LOG_LINE@request@          {@@@",
+      "@@@STEP_LOG_LINE@request@            \"key\": \"user_agent\", @@@",
+      "@@@STEP_LOG_LINE@request@            \"value\": \"recipe\"@@@",
+      "@@@STEP_LOG_LINE@request@          }@@@",
+      "@@@STEP_LOG_LINE@request@        ]@@@",
+      "@@@STEP_LOG_LINE@request@      }@@@",
+      "@@@STEP_LOG_LINE@request@    }@@@",
+      "@@@STEP_LOG_LINE@request@  ]@@@",
+      "@@@STEP_LOG_LINE@request@}@@@",
+      "@@@STEP_LOG_END@request@@@",
+      "@@@STEP_LINK@8945511751514863186@https://cr-buildbucket.appspot.com/build/8945511751514863186@@@"
+    ]
+  },
+  {
+    "cmd": [],
+    "name": "collect builds"
+  },
+  {
+    "cmd": [],
+    "name": "collect builds.collect",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "bb",
+      "collect",
+      "-host",
+      "cr-buildbucket.appspot.com",
+      "-interval",
+      "20s",
+      "8945511751514863186"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "collect builds.collect.wait",
+    "timeout": 86400,
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@2@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "bb",
+      "batch",
+      "-host",
+      "cr-buildbucket.appspot.com"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "collect builds.collect.get",
+    "stdin": "{\"requests\": [{\"getBuild\": {\"fields\": \"builder,createTime,createdBy,critical,endTime,id,infra,infra.swarming.taskId,input,number,output,startTime,status,summaryMarkdown,updateTime\", \"id\": \"8945511751514863186\"}}]}",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@2@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"responses\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"getBuild\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"builder\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"bucket\": \"try\", @@@",
+      "@@@STEP_LOG_LINE@json.output@          \"builder\": \"builder-subbuild1\", @@@",
+      "@@@STEP_LOG_LINE@json.output@          \"project\": \"fuchsia\"@@@",
+      "@@@STEP_LOG_LINE@json.output@        }, @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"createTime\": \"2018-05-25T23:50:17Z\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"createdBy\": \"project:fuchsia\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"id\": \"8945511751514863186\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"infra\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"resultdb\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@            \"invocation\": \"invocations/build:8945511751514863186\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          }, @@@",
+      "@@@STEP_LOG_LINE@json.output@          \"swarming\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@            \"priority\": 30, @@@",
+      "@@@STEP_LOG_LINE@json.output@            \"taskId\": \"abc123\"@@@",
+      "@@@STEP_LOG_LINE@json.output@          }@@@",
+      "@@@STEP_LOG_LINE@json.output@        }, @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"input\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@          \"gerritChanges\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@            {@@@",
+      "@@@STEP_LOG_LINE@json.output@              \"change\": \"123456\", @@@",
+      "@@@STEP_LOG_LINE@json.output@              \"host\": \"chromium-review.googlesource.com\", @@@",
+      "@@@STEP_LOG_LINE@json.output@              \"patchset\": \"7\", @@@",
+      "@@@STEP_LOG_LINE@json.output@              \"project\": \"fuchsia\"@@@",
+      "@@@STEP_LOG_LINE@json.output@            }@@@",
+      "@@@STEP_LOG_LINE@json.output@          ]@@@",
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+      "vpython3",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "listdir",
+      "[CACHE]/builder/src/out",
+      "--recursive"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Global generators.List checkout",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
+      "@@@STEP_LOG_END@listdir@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "[CACHE]/builder/src/flutter/sky/tools/create_macos_framework.py",
+      "--variant",
+      "host_profile",
+      "--type",
+      "engine",
+      "--engine-capture-core-dump"
+    ],
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Global generators.Debug-FlutterMacOS.framework",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "sudo",
+      "xcode-select",
+      "--reset"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Global generators.reset XCode",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "vpython3",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "listdir",
+      "[CACHE]/builder/src/out",
+      "--recursive"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Final List checkout",
+    "~followup_annotations": [
+      "@@@STEP_LOG_END@listdir@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "git",
+      "rev-parse",
+      "HEAD"
+    ],
+    "cwd": "[CACHE]/builder/src/flutter",
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "git rev-parse"
+  },
+  {
+    "cmd": [
+      "python3",
+      "-u",
+      "RECIPE_MODULE[depot_tools::gsutil]/resources/gsutil_smart_retry.py",
+      "--",
+      "RECIPE_REPO[depot_tools]/gsutil.py",
+      "----",
+      "cp",
+      "-r",
+      "/a/b/c.txt",
+      "gs://flutter_archives_v2/flutter_infra_release/flutter//bucket/c.txt"
+    ],
+    "infra_step": true,
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "gsutil c.txt",
+    "~followup_annotations": [
+      "@@@STEP_LINK@gsutil.upload@https://console.cloud.google.com/storage/browser/flutter_archives_v2/flutter_infra_release/flutter//bucket/c.txt@@@"
+    ]
+  },
+  {
+    "name": "$result"
+  }
+]
\ No newline at end of file
diff --git a/recipes/engine_v2/engine_v2.expected/config_from_file.json b/recipes/engine_v2/engine_v2.expected/config_from_file.json
index d01d84c..d290ae9 100644
--- a/recipes/engine_v2/engine_v2.expected/config_from_file.json
+++ b/recipes/engine_v2/engine_v2.expected/config_from_file.json
@@ -555,6 +555,58 @@
     "name": "display tests"
   },
   {
+    "cmd": [
+      "python3",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::json]/resources/read.py",
+      "[START_DIR]/engine/ci/builders/None.json",
+      "/path/to/tmp/json"
+    ],
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Read build config file (3)",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python3",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::json]/resources/read.py",
+      "[START_DIR]/engine/ci/builders/None.json",
+      "/path/to/tmp/json"
+    ],
+    "luci_context": {
+      "realm": {
+        "name": "proj:try"
+      },
+      "resultdb": {
+        "current_invocation": {
+          "name": "invocations/build:8945511751514863184",
+          "update_token": "token"
+        },
+        "hostname": "rdbhost"
+      }
+    },
+    "name": "Read build config file (4)",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
+  {
     "name": "$result"
   }
 ]
\ No newline at end of file
diff --git a/recipes/engine_v2/engine_v2.py b/recipes/engine_v2/engine_v2.py
index a4e5f05..f211798 100644
--- a/recipes/engine_v2/engine_v2.py
+++ b/recipes/engine_v2/engine_v2.py
@@ -25,12 +25,16 @@
 PYTHON_VERSION_COMPATIBILITY = 'PY3'
 
 DEPS = [
+    'depot_tools/gsutil',
     'flutter/display_util',
     'flutter/repo_util',
+    'flutter/osx_sdk',
     'flutter/shard_util_v2',
     'recipe_engine/buildbucket',
+    'recipe_engine/file',
     'recipe_engine/json',
     'recipe_engine/path',
+    'recipe_engine/platform',
     'recipe_engine/properties',
     'recipe_engine/step',
 ]
@@ -88,9 +92,73 @@
       raise_on_failure=True,
   )
 
-  # Download sub-builds
-  out_builds_path = api.path['cleanup'].join('out')
-  api.shard_util_v2.download_full_builds(build_results, out_builds_path)
+
+  # Global generators
+  generators = api.properties.get('generators')
+  if generators is None:
+    generators = api.json.read(
+        'Read build config file',
+        config_path,
+        step_test_data=lambda: api.json.test_api.output({})
+    ).json.output.get('generators', [])
+  if generators:
+    # Generators require a full engine checkout.
+    full_engine_checkout = api.path['cache'].join('builder')
+    api.file.ensure_directory('Ensure full engine checkout folder', full_engine_checkout)
+    clobber = api.properties.get('clobber', True)
+    gclient_vars = api.shard_util_v2.unfreeze_dict(api.properties.get('gclient_variables', {}))
+    env, env_prefixes = api.repo_util.engine_environment(full_engine_checkout)
+    api.repo_util.engine_checkout(
+        full_engine_checkout, env, env_prefixes, clobber,
+        custom_vars=gclient_vars
+    )
+    # Download sub-builds
+    out_builds_path = full_engine_checkout.join('src', 'out')
+    api.file.rmtree('Clobber build download folder', out_builds_path)
+    api.shard_util_v2.download_full_builds(build_results, out_builds_path)
+    with api.step.nest('Global generators') as presentation:
+      if 'tasks' in generators: 
+        for generator_task in generators['tasks']:
+          # Generators must run from inside flutter folder.
+          # If platform is mac we need to run the generator from an xcode context.
+          if api.platform.is_mac:
+            with api.osx_sdk('ios'):
+              _run_global_generator(api, generator_task, full_engine_checkout)
+          else:
+            _run_global_generator(api, generator_task, full_engine_checkout)
+    api.file.listdir('Final List checkout', full_engine_checkout.join('src', 'out'), recursive=True)
+  # Global archives
+  archives = api.properties.get('archives')
+  if archives is None:
+    archives = api.json.read(
+        'Read build config file',
+        config_path,
+        step_test_data=lambda: api.json.test_api.output({})
+    ).json.output.get('archives', [])
+  # Global archives are stored in out folder from full_engine_checkout inside release, debug or profile
+  # depending of the runtime mode. So far we are uploading files only.
+  bucket = 'flutter_archives_v2'
+  for archive in archives:
+    source = full_engine_checkout.join('src', archive.get('source'))
+    commit = api.repo_util.get_commit(full_engine_checkout.join('src', 'flutter'))
+    artifact_path = 'flutter_infra_release/flutter/%s/%s' % (commit, archive.get('destination'))
+    api.gsutil.upload(
+        source=source,
+        bucket=bucket,
+        dest=artifact_path,
+        args=['-r'],
+        name=archive.get('name'),
+    )
+
+
+def _run_global_generator(api, generator_task, full_engine_checkout):
+  cmd = []
+  api.file.listdir('List checkout', full_engine_checkout.join('src', 'out'), recursive=True)
+  script = generator_task.get('script')
+  full_path_script = full_engine_checkout.join('src', script)
+  cmd.append(full_path_script)
+  cmd.extend(generator_task.get('parameters', []))
+  api.step(generator_task.get('name'), cmd)
 
 
 def GenTests(api):
@@ -105,14 +173,60 @@
       "ninja": {"config": "ios_debug", "targets": []},
       "generators": [{"name": "generator1", "script": "script1.sh"}]
   }]
+  generators = {
+          "tasks":
+              [
+                  {
+                    "language": "python",
+                    "name": "Debug-FlutterMacOS.framework",
+                    "parameters": [
+                        "--variant",
+                        "host_profile",
+                        "--type",
+                        "engine",
+                        "--engine-capture-core-dump"
+                    ],
+                    "script": "flutter/sky/tools/create_macos_framework.py",
+                    "type": "local"
+                  }
+              ]
+  }
+  archives = [
+      {
+          'source': '/a/b/c.txt',
+          'destination': 'bucket/c.txt',
+          'name': 'c.txt'
+
+      }
+  ]
+
 
   yield api.test(
-      'basic',
-      api.properties(builds=builds, tests=[], environment='Staging'),
+      'basic_mac',
+      api.platform.name('mac'),
+      api.properties(builds=builds, tests=[], generators=generators, archives=archives, environment='Staging'),
       api.buildbucket.try_build(
           project='proj',
           builder='try-builder',
-          git_repo='https://github.com/repo/a',
+          git_repo='https://flutter.googlesource.com/mirrors/engine',
+          revision='a' * 40,
+          build_number=123,
+      ),
+      api.shard_util_v2.child_build_steps(
+          builds=[try_subbuild1],
+          launch_step="launch builds",
+          collect_step="collect builds",
+      ),
+  )
+
+  yield api.test(
+      'basic_linux',
+      api.platform.name('linux'),
+      api.properties(builds=builds, tests=[], generators=generators, environment='Staging'),
+      api.buildbucket.try_build(
+          project='proj',
+          builder='try-builder',
+          git_repo='https://flutter.googlesource.com/mirrors/engine',
           revision='a' * 40,
           build_number=123,
       ),