Vendor dependencies

Let's see how I like this workflow.

vendor/cxx/tools/buck/prelude/genrule_local_labels.bzl

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+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under both the MIT license found in the
+# LICENSE-MIT file in the root directory of this source tree and the Apache
+# License, Version 2.0 found in the LICENSE-APACHE file in the root directory
+# of this source tree.
+
+"""
+Handle labels used to opt-out genrules from running remotely.
+"""
+
+# Some rules have to be run locally for various reasons listed next to the label.
+_GENRULE_LOCAL_LABELS = {label: True for label in [
+    # Used for buck2 tests that want to run locally
+    "buck2_test_local_exec",
+
+    # Split dwarf merge rules currently don't properly list their inputs.
+    "dwp",
+
+    # Bolt and hottext post-processing rules operate on a large statically
+    # linked binary which contains non-deterministic build info, meaning its
+    # a) currently too large for RE to handle and b) caching it would only
+    # waste cache space.
+    "postprocess_bolt",
+    "postprocess_hottext",
+
+    # The iOS build needs to run a genrule locally to gather non-deterministic
+    # build info from `hg`.
+    "non_deterministic_build_info",
+
+    # Some call "buck run" & "buck root" recursively.
+    "uses_buck_run",
+
+    # Some antlir and telephoto genrules use clowder for downloading from everstore
+    "uses_clowder",
+
+    # Some antlir genrules use cpio for unpacking rpms
+    "uses_cpio",
+
+    # Creates secondary Eden repos outside of `buck-out/`
+    "uses_eden_mounts",
+
+    # The Antlir core compiler uses sudo
+    "uses_sudo",
+
+    # Some rules utilize hg for some reason as part of code generation
+    "uses_hg",
+
+    # Dotslash is not yet supported on RE.
+    "uses_dotslash",
+
+    # Directly uses the smcc binary which is not on RE.
+    "uses_smcc",
+
+    # Uses shasum which is not on RE.
+    "uses_shasum",
+
+    # Uses xz which is not on RE.
+    "uses_xz",
+
+    # Uses tw tool which is not on RE.
+    "uses_tw",
+
+    # Uses thrift tool which is not on RE.
+    "uses_thrift",
+
+    # Yarn installs use a large in-repo yarn repo that's ~6.1GB at the time of
+    # writing, and so v1 uses workarounds (D17359502) to avoid the overhead this
+    # would causes.  So, run these rules locally to maintain compatiblity and
+    # until we have a better yarn solution.
+    "yarn_install",
+
+    # Non-deterministic builds that depend on data from configerator.
+    "reads_configerator",
+
+    # Third party java artifacts are stored in manifold and therefore can't be accessed from RE worker.
+    "third_party_java",
+
+    # The antlir packge-at-build-time rules current rely on tools like hg/git,
+    # which don't work on RE.
+    "antlir_macros",
+
+    # UPM codegen does lots of network I/O (e.g. scuba, JK, configerator), which
+    # makes it fail on RE.
+    "upm_binary_gen",
+
+    # PHP isn't available in RE or in our repos so, for now, we run them locally
+    # (https://fb.workplace.com/groups/1042353022615812/posts/1849505965233843/).
+    "uses_php",
+
+    # mksquashfs isn't available in RE, so run these locally
+    # (https://fb.workplace.com/groups/buck2users/permalink/3023630007893360/)
+    "uses_mksquashfs",
+
+    # PXL rules can't yet run on RE.
+    "pxl",
+
+    # Accesses dewey
+    "uses_dewey",
+
+    # Accesses justknobs configuration
+    "justknobs",
+
+    # Side effecting writes directly into buck-out on the local
+    # filesystem
+    "writes_to_buck_out",
+
+    # Calculates and writes absolute paths in the local filesystem
+    "uses_local_filesystem_abspaths",
+
+    # Use local GPUs with latest Nvidia libs which are not avaiable in RE yet
+    "uses_lower_locally",
+
+    # Uses fbpkg outside of the repo
+    "uses_fbpkg",
+
+    # Makes recursive calls to buck
+    "uses_buck",
+
+    # Uses files in the repo that it doesn't declare as dependencies
+    "uses_undeclared_inputs",
+
+    # Connects to service router which won't work on RE
+    "uses_service_router",
+
+    # Downloads direct from manifold
+    "uses_manifold",
+
+    # When run on RE produces "Cache is out of space" (excessive disk/memory)
+    "re_cache_out_of_space",
+
+    # HHVM Post-link rules need to be local since the binary is huge.
+    "hhvm_postlink",
+
+    # Uses network access (unspecified what as of yet)
+    "network_access",
+
+    # Uses clang format which is not in RE
+    "uses_clang_format",
+
+    # Perform makes compilation in situ.
+    "uses_make",
+
+    # Like it says in the label
+    "uses_mkscratch",
+
+    # Locally built toolchains which do not exist on RE
+    "toolchain_testing",
+
+    # sphinx_wiki always needs to run locally
+    "sphinx_wiki",
+]}
+
+def genrule_labels_require_local(labels):
+    for label in labels:
+        if label in _GENRULE_LOCAL_LABELS:
+            return True
+    return False