[emyller]

Local evaluation ignores segments that target flags by other flags, and environment flags ignore every segment, so the SDK serves different flags than Flagsmith.

Closes SDK-8. Depends on Flagsmith/flagsmith-rust-flag-engine#44; merge once it's released. Tested by sdk-spec v0.7.0.

Changes

• Identity and environment flags apply overrides of segments that depend on other flags.
• Environment flags apply overrides of segments that need no identity.

🤖 Generated with Claude Code

[linear-code]

SDK-8

[coderabbitai]

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[codspeed]

Merging this PR will improve performance by ×2.3

⚡ 14 improved benchmarks
✅ 1 untouched benchmark
⏩ 15 skipped benchmarks¹

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	get_identity_flags_no_traits[small]	1,400.3 µs	387.9 µs	×3.6
⚡	get_identity_flags_with_identity_overrides[small]	1,407.1 µs	394.1 µs	×3.6
⚡	get_identity_flags_no_traits[large]	45.1 ms	15.4 ms	×2.9
⚡	get_identity_flags_with_identity_overrides[large]	45.1 ms	15.4 ms	×2.9
⚡	get_identity_segments_with_traits[large]	52 ms	20.8 ms	×2.5
⚡	get_identity_flags_no_traits[medium]	7.5 ms	3 ms	×2.5
⚡	get_identity_flags_with_identity_overrides[medium]	7.5 ms	3 ms	×2.5
⚡	get_identity_flags_with_traits[large]	54 ms	22.7 ms	×2.4
⚡	get_identity_segments_with_traits[medium]	8.6 ms	3.9 ms	×2.2
⚡	get_identity_flags_with_traits[medium]	9.1 ms	4.5 ms	×2
⚡	get_identity_segments_with_traits[small]	2.2 ms	1.2 ms	+89.78%
⚡	get_identity_flags_with_traits[small]	2.2 ms	1.2 ms	+87.21%
⚡	get_environment_flags[medium]	2.1 ms	1.6 ms	+33.65%
⚡	get_environment_flags[large]	7.9 ms	6.1 ms	+30.2%

Tip

Curious why performance improved? Comment @codspeedbot explain why performance improved on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing feat/sdk-8-flag-dependency (5a7d002) with main (6649750)}

Footnotes

1. 15 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩