Generated test bundles are non deterministic #465
Description
#402 (9975f41) break determinism at least in test bundles.
I have been debugging determinism issues in our setup and discovered that generated test bundles always differ from each other.
I compared 2 such test bundles and discovered that they had different LC_UUID load commands.
I was able to narrow down to the commit that introduced the regression - #402 (9975f41)
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# Checkout rules_swift
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git clone https://github.com/bazelbuild/rules_swift.git
cd rules_swift
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# Point apple_support at 7009b77c98a67d3fea081c9db4dbcee8effc3b7e
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git apply <<EOF
diff --git a/MODULE.bazel b/MODULE.bazel
index 2f15a5e..8eefa02 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -11,6 +11,11 @@ module(
bazel_dep(name = "bazel_features", version = "1.10.0")
bazel_dep(name = "bazel_skylib", version = "1.3.0")
bazel_dep(name = "apple_support", version = "1.21.0", repo_name = "build_bazel_apple_support")
+git_override(
+ module_name = "apple_support",
+ commit = "7009b77c98a67d3fea081c9db4dbcee8effc3b7e",
+ remote = "https://github.com/bazelbuild/apple_support.git",
+)
bazel_dep(name = "rules_cc", version = "0.1.2")
bazel_dep(name = "rules_shell", version = "0.3.0")
bazel_dep(name = "platforms", version = "0.0.9")
EOF
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# Observe that LC_UUID is determenistic
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bazelisk clean &>/dev/null && bazelisk test //examples/xplatform/xctest:xctest --macos_minimum_os=14.0 &>/dev/null && otool -l bazel-bin/examples/xplatform/xctest/xctest.xctest/Contents/MacOS/xctest | grep LC_UUID -A 2
# cmd LC_UUID
# cmdsize 24
# uuid C6EC028E-324A-389F-98EC-D60EC54585C2
bazelisk clean &>/dev/null && bazelisk test //examples/xplatform/xctest:xctest --macos_minimum_os=14.0 &>/dev/null && otool -l bazel-bin/examples/xplatform/xctest/xctest.xctest/Contents/MacOS/xctest | grep LC_UUID -A 2
# cmd LC_UUID
# cmdsize 24
# uuid C6EC028E-324A-389F-98EC-D60EC54585C2
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# Point apple_support at 9975f41a628bcadb455b983bf8e3af4a0c0ac568
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git checkout -- .
git apply <<EOF
diff --git a/MODULE.bazel b/MODULE.bazel
index 2f15a5e..73f8387 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -11,6 +11,11 @@ module(
bazel_dep(name = "bazel_features", version = "1.10.0")
bazel_dep(name = "bazel_skylib", version = "1.3.0")
bazel_dep(name = "apple_support", version = "1.21.0", repo_name = "build_bazel_apple_support")
+git_override(
+ module_name = "apple_support",
+ commit = "9975f41a628bcadb455b983bf8e3af4a0c0ac568",
+ remote = "https://github.com/bazelbuild/apple_support.git",
+)
bazel_dep(name = "rules_cc", version = "0.1.2")
bazel_dep(name = "rules_shell", version = "0.3.0")
bazel_dep(name = "platforms", version = "0.0.9")
EOF
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# Observe that LC_UUID is NON-determenistic
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bazelisk clean &>/dev/null && bazelisk test //examples/xplatform/xctest:xctest --macos_minimum_os=14.0 &>/dev/null && otool -l bazel-bin/examples/xplatform/xctest/xctest.xctest/Contents/MacOS/xctest | grep LC_UUID -A 2
# cmd LC_UUID
# cmdsize 24
# uuid 12176ADC-1B10-3D2B-A1FC-13382069AEC6
bazelisk clean &>/dev/null && bazelisk test //examples/xplatform/xctest:xctest --macos_minimum_os=14.0 &>/dev/null && otool -l bazel-bin/examples/xplatform/xctest/xctest.xctest/Contents/MacOS/xctest | grep LC_UUID -A 2
# cmd LC_UUID
# cmdsize 24
# uuid C848922F-171C-37A5-9334-AAFF48976706