getting-started: segfault building

[seenickcode]

Steps to reproduce:

1. Install required version of Zig

cd /tmp
curl -LO https://pkg.machengine.org/zig/zig-macos-aarch64-0.14.0-dev.2577+271452d22.tar.xz
tar -xf zig-macos-aarch64-0.14.0-dev.2577+271452d22.tar.xz
sudo mv zig-macos-aarch64-0.14.0-dev.2577+271452d22 /usr/local/zig-mach

Then add to your shell config (~/.zshrc):
export PATH="/usr/local/zig-mach:$PATH"

Reload shell and verify:

source ~/.zshrc
zig version

Shows 0.14.0-dev.2577+271452d22

2. Set up project:

mkdir testproject
cd testproject
zig init
zig fetch --save https://pkg.machengine.org/mach/cfd9fc8ff0452f855bf5a8a7e53b611cae630254.tar.gz

3. Replace build.zig with Getting Started file:

const std = @import("std");

pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});

    // Create our Mach app module, where all our code lives.
    const app_mod = b.createModule(.{
        .root_source_file = b.path("src/App.zig"),
        .optimize = optimize,
        .target = target,
    });

    // Add Mach import to our app.
    const mach_dep = b.dependency("mach", .{
        .target = target,
        .optimize = optimize,
    });
    app_mod.addImport("mach", mach_dep.module("mach"));

    // Have Mach create the executable for us
    const exe = @import("mach").addExecutable(mach_dep.builder, .{
        .name = "hello-world",
        .app = app_mod,
        .target = target,
        .optimize = optimize,
    });
    b.installArtifact(exe);

    // Run the app when `zig build run` is invoked
    const run_cmd = b.addRunArtifact(exe);
    run_cmd.step.dependOn(b.getInstallStep());
    if (b.args) |args| {
        run_cmd.addArgs(args);
    }
    const run_step = b.step("run", "Run the app");
    run_step.dependOn(&run_cmd.step);

    // Run tests when `zig build test` is run
    const app_unit_tests = b.addTest(.{
        .root_module = app_mod,
    });
    const run_app_unit_tests = b.addRunArtifact(app_unit_tests);
    const test_step = b.step("test", "Run unit tests");
    test_step.dependOn(&run_app_unit_tests.step);
}

4. Build

zig build

Things work fine here. No errors

5. Run

zig build run
dyld[2430]: duplicate linked dylib '/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation' in /Users/myusername/code/testproject/zig-out/bin/hello-world
dyld[2430]: duplicate linked dylib '/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation'
run
└─ run hello-world failure
error: the following command terminated unexpectedly:
/Users/myusername/code/testproject/zig-out/bin/hello-world 
Build Summary: 20/22 steps succeeded; 1 failed
run transitive failure
└─ run hello-world failure
error: the following build command failed with exit code 1:
/Users/myusername/code/testproject/.zig-cache/o/89ed125a977de8a29072f018268a5a63/build /usr/local/zig-mach/zig /usr/local/zig-mach/lib /Users/myusername/code/testproject /Users/myusername/code/testproject/.zig-cache /Users/myusername/.cache/zig --seed 0x5b04228d -Z5bb0e7e83cfd0b57 run

Expected output:

zig build run should have exit code 0 and run something.

Additional system information:

TL;DR: Latest macOS w/ Silicon M2 processor.

Detailed system info:

➜  testproject zig version
0.14.0-dev.2577+271452d22
➜  testproject zig env
{
 "zig_exe": "/usr/local/zig-mach/zig",
 "lib_dir": "/usr/local/zig-mach/lib",
 "std_dir": "/usr/local/zig-mach/lib/std",
 "global_cache_dir": "/Users/myusername/.cache/zig",
 "version": "0.14.0-dev.2577+271452d22",
 "target": "aarch64-macos.26.0.1...26.0.1-none",
 "env": {
  "ZIG_GLOBAL_CACHE_DIR": null,
  "ZIG_LOCAL_CACHE_DIR": null,
  "ZIG_LIB_DIR": null,
  "ZIG_LIBC": null,
  "ZIG_BUILD_RUNNER": null,
  "ZIG_VERBOSE_LINK": null,
  "ZIG_VERBOSE_CC": null,
  "ZIG_BTRFS_WORKAROUND": null,
  "ZIG_DEBUG_CMD": null,
  "CC": null,
  "NO_COLOR": null,
  "CLICOLOR_FORCE": null,
  "XDG_CACHE_HOME": null,
  "HOME": "/Users/myusername"
 }
}
➜  testproject sw_vers
uname -a
system_profiler SPSoftwareDataType
system_profiler SPHardwareDataType

ProductName:		macOS
ProductVersion:		26.0.1
BuildVersion:		25A362
Darwin Irinas-MacBook-Air.local 25.0.0 Darwin Kernel Version 25.0.0: Wed Sep 17 21:38:03 PDT 2025; root:xnu-12377.1.9~141/RELEASE_ARM64_T8112 arm64
Software:

    System Software Overview:

      System Version: macOS 26.0.1 (25A362)
      Kernel Version: Darwin 25.0.0
      Boot Volume: Macintosh HD
      Boot Mode: Normal
      Computer Name: Irina’s MacBook Air
      User Name: Nick (myusername)
      Secure Virtual Memory: Enabled
      System Integrity Protection: Enabled
      Time since boot: 34 days, 13 hours, 47 minutes

Hardware:

    Hardware Overview:

      Model Name: MacBook Air
      Model Identifier: Mac14,2
      Model Number: MLY13LL/A
      Chip: Apple M2
      Total Number of Cores: 8 (4 performance and 4 efficiency)
      Memory: 8 GB
      System Firmware Version: 13822.1.2
      OS Loader Version: 13822.1.2
      Serial Number (system): P76J0W1JX4
      Hardware UUID: 0B1B9148-AA14-556F-80EC-3024ADD50FD4
      Provisioning UDID: 00008112-0019581E0A3BC01E
      Activation Lock Status: Enabled

➜  testproject system_profiler SPDisplaysDataType

Graphics/Displays:

    Apple M2:

      Chipset Model: Apple M2
      Type: GPU
      Bus: Built-In
      Total Number of Cores: 8
      Vendor: Apple (0x106b)
      Metal Support: Metal 4
      Displays:
        Color LCD:
          Display Type: Built-in Liquid Retina Display
          Resolution: 2560 x 1664 Retina
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Automatically Adjust Brightness: Yes
          Connection Type: Internal