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build: Zig 0.17 fails on std.Build.args despite documented 0.16-or-later support #3
Description
A source build fails with Homebrew's Zig 0.17.0 on Apple Silicon because both Slab and the in-tree fy build script access std.Build.args, which is absent in 0.17. The same checkout builds successfully with Zig 0.16.0 and the same raylib installation.
Environment
- Commit:
247cccd37bc564cb0d9482c1bca37afbe6117b5b - macOS 26.7.1, arm64
- Zig 0.17.0 installed via Homebrew
- raylib 6.0 installed via Homebrew
- No changes to Slab or fy build scripts
Reproduction
From the repository root with Zig 0.17.0:
zig version
# 0.17.0
zig build -Doptimize=ReleaseFastThe failing build in this session used ZIG_GLOBAL_CACHE_DIR pointing to a temporary directory; that does not change the build API incompatibility.
Actual result
build.zig:48:11: error: no field named 'args' in struct 'Build'
if (b.args) |args| kernel_probe_cmd.addArgs(args);
^~~~
/opt/homebrew/Cellar/zig/0.17.0/lib/zig/std/Build.zig:1:1: note: struct declared here
const Build = @This();
^~~~~
fy/build.zig:69:11: error: no field named 'args' in struct 'Build'
if (b.args) |args| run_bench.addArgs(args);
^~~~
/opt/homebrew/Cellar/zig/0.17.0/lib/zig/std/Build.zig:1:1: note: struct declared here
const Build = @This();
^~~~~
Expected result
The build succeeds with the documented toolchain range, or setup documentation explicitly identifies the supported Zig version. README.md currently says “Zig 0.16 or later,” and build.zig.zon declares a minimum version of 0.16.0, so installing the current Homebrew version appears supported.
Verified workaround
Using the official Zig 0.16.0 aarch64 macOS distribution, zig build -Doptimize=ReleaseFast succeeded against the same checkout and raylib 6.0. The resulting Slab executable also successfully exported an 83-second project with a mix and eight stems.
Please either update the Slab and fy build scripts for Zig 0.17 and check for further compatibility issues, or document/pin Zig 0.16 until 0.17 support is validated. Fixing these two errors alone has not been verified to make the entire project compatible with 0.17.
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