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Add lightweight bi output group to skip linking during Index Build #3302

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Merged
brentleyjones merged 1 commit into from
Apr 10, 2026
Merged

Add lightweight bi output group to skip linking during Index Build #3302

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9 changes: 5 additions & 4 deletions xcodeproj/internal/bazel_integration_files/generate_index_build_bazel_dependencies.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -10,11 +10,12 @@ readonly config="${BAZEL_CONFIG}_indexbuild"
output_groups=(
# Compile params
"bc $BAZEL_TARGET_ID"
# Products (i.e. bundles) and index store data. The products themselves aren't
# used, they cause transitive files to be created. We use
# `--remote_download_regex` below to collect the files we care
# Indexstores and their filelist. Requesting indexstore directories triggers
# transitive Swift compilation (producing swiftmodules, indexstores, and
# generated headers) without linking, avoiding large product binaries. We use
# `--remote_download_regex` below to download the files we care
# about.
"bp $BAZEL_TARGET_ID"
"bi $BAZEL_TARGET_ID"
)

indexstores_filelists=()
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9 changes: 9 additions & 0 deletions xcodeproj/internal/files/output_files.bzl
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Expand Up @@ -262,8 +262,17 @@ def _collect_output_files(
transitive = [transitive_products],
)

# Indexing output group: contains indexstores (to trigger Swift compilation)
# and the indexstores filelist (for import_indexstores). Unlike `bp`, this
# does not include linked products, avoiding large binary materialization.
indexing_depset = memory_efficient_depset(
[indexstores_filelist],
transitive = [transitive_indexstores],
)

direct_group_list = [
("bc {}".format(id), transitive_compile_params),
("bi {}".format(id), indexing_depset),
("bl {}".format(id), transitive_link_params),
(products_output_group_name, products_depset),
]
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