fix(build): work around Zig 0.15.2 macOS 26.4 SDK issue#277
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forketyfork merged 2 commits intomainfrom Apr 10, 2026
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fix(build): work around Zig 0.15.2 macOS 26.4 SDK issue#277forketyfork merged 2 commits intomainfrom
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Keep the macOS 26.4 SDK workaround, but trim it to the pieces we actually need. The dev shell now uses a fake DEVELOPER_DIR plus a narrow xcrun --sdk macosx --show-sdk-path shim. build.zig resolves framework paths from DEVELOPER_DIR and xcrun before falling back to hardcoded SDK locations, so we no longer need to force SDKROOT. Refs https://codeberg.org/ziglang/zig/issues/31756. Remove this once Architect moves off Zig 0.15.2 or Zig's Darwin SDK lookup no longer needs the workaround.
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Issue: PR #277 introduced a fake `DEVELOPER_DIR` for the Zig 0.15.2 macOS SDK workaround, but that developer tree did not include `usr/bin/xcrun`, so Git and other commands started failing until `DEVELOPER_DIR` was unset. Solution: Install the shim at `DEVELOPER_DIR/usr/bin/xcrun` and reuse it from the PATH entry so the fake developer directory stays valid for both Zig and tools that delegate to `/usr/bin/xcrun`. Update the development docs and repo notes so the workaround is easier to understand and maintain.
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Summary
ghosttytov1.3.10.15.2build.zigresolve framework paths fromDEVELOPER_DIRandxcrunbefore falling back to hardcoded SDK locationsWhy
After the Xcode / Command Line Tools
26.4update, Zig0.15.2started failing during native Darwin linking on this machine with errors likeundefined symbol: __availability_version_check.The upstream regression is tracked here:
https://codeberg.org/ziglang/zig/issues/31756
Architect still needs Zig
0.15.2today, so this PR adds a workaround. The important part is that it is intentionally narrow:DEVELOPER_DIRbacked byMacOSX15.4.sdkxcrun --sdk macosx --show-sdk-pathshimSDKROOTbuild.zignow followsDEVELOPER_DIRandxcrunfirst so the workaround stays local to the dev shell instead of leaking into the project more broadly.This should be removed once Architect moves off Zig
0.15.2, or once Zig handles the arm64e-only macOS SDK stubs correctly.Verification
nix develop -c zig buildnix develop -c zig build testnix develop -c env ZIG_GLOBAL_CACHE_DIR=$PWD/.zig-global-cache ZIG_LOCAL_CACHE_DIR=$PWD/.zig-local-cache just lint