update flake to new apple sdk

[schicks]

What does this PR do?

nix develop was failing with errors mentioning that the apple sdk was outdated. This PR updates the referenced version of the apple SDK, along with the flake more generally.

How did you verify your code works?

ran nix develop and confirmed that the error no longer occurs. However, in the nix shell bun bd still fails; I think we are waiting on this PR and another flake update to resolve that.

[coderabbitai]

Walkthrough

The flake.nix file is modified to consolidate macOS-specific dependencies. Explicit Apple framework inclusions (CoreFoundation, CoreServices, Security) are replaced with a unified pkgs.apple-sdk reference in the Darwin build configuration.

Changes

Cohort / File(s)	Summary
macOS dependency consolidation flake.nix	Replaces individual macOS framework dependencies (CoreFoundation, CoreServices, Security) with a single pkgs.apple-sdk package reference for Darwin builds

Possibly related PRs

• oven-sh/bun#23406: Directly related modification to flake.nix's macOS framework declarations that adds macOS frameworks, contrasting with this PR's consolidation approach.

Pre-merge checks

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'update flake to new apple sdk' directly and accurately summarizes the main change in the pull request - updating the flake to use a newer Apple SDK.
Description check	✅ Passed	The description follows the repository template with both required sections ('What does this PR do?' and 'How did you verify your code works?') properly filled out with relevant details and context.

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[coderabbitai]

Actionable comments posted: 1

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📥 Commits

Reviewing files that changed from the base of the PR and between 4d60b6f and 7254b0b.

⛔ Files ignored due to path filters (1)

• flake.lock is excluded by !**/*.lock

📒 Files selected for processing (1)

• flake.nix (1 hunks)

[coderabbitai]

🧹 Nitpick | 🔵 Trivial

Darwin SDK migration looks correct; consider SDK version pinning / redundancy.

Switching to pkgs.apple-sdk under the Darwin-only block matches the new nixpkgs Darwin SDK pattern and replaces the deprecated darwin.apple_sdk.frameworks.* approach. (nixos.org) Note that clangStdenv already wires in the default unversioned apple-sdk, so explicitly listing pkgs.apple-sdk here is a bit redundant unless you later choose a specific version like pkgs.apple-sdk_14/_15 to stabilize Darwin builds across future nixos-unstable updates. (nixos.org) I’d keep this change (it clearly documents the SDK dependency) but consider pinning a version if you hit regressions when the default SDK moves.

Please re-check nix develop on both x86_64-darwin and aarch64-darwin once the upstream nixpkgs SDK changes you’re depending on are available, to confirm there are no remaining SDK resolution/linking issues.

🤖 Prompt for AI Agents

In flake.nix around lines 121 to 124, the Darwin block currently adds the
unversioned pkgs.apple-sdk which is redundant with clangStdenv and may cause
future regressions; either pin to a concrete SDK (e.g., replace pkgs.apple-sdk
with pkgs.apple-sdk_14 or pkgs.apple-sdk_15 to stabilize builds) or keep the
unversioned entry but add a comment explaining the intentional redundancy; after
changing, run nix develop on x86_64-darwin and aarch64-darwin to verify SDK
resolution and linking succeed.