Update rules_zig: add zig_srcs target, fix source handling bug, clean up BUILD files, adjust async/coro.zig tests, and disable nemo and yaml model loaders.

MODULE.bazel

@@ -17,7 +17,7 @@ bazel_dep(name = "rules_proto", version = "7.1.0")
 bazel_dep(name = "rules_python", version = "0.40.0")
 bazel_dep(name = "rules_rust", version = "0.60.0")
 bazel_dep(name = "rules_uv", version = "0.65.0")
-bazel_dep(name = "rules_zig", version = "20250530.0-5084f1f")
+bazel_dep(name = "rules_zig", version = "20250613.0-567662a")
 bazel_dep(name = "sentencepiece", version = "20240618.0-d7ace0a")
 bazel_dep(name = "toolchains_llvm_bootstrapped", version = "0.2.3")
 bazel_dep(name = "toolchains_protoc", version = "0.4.1")

async/BUILD.bazel

@@ -1,4 +1,6 @@
-load("@rules_zig//zig:defs.bzl", "zig_library")
+load("@rules_zig//zig:defs.bzl", "zig_library", "zig_test")
+load("@zml//bazel:zig_srcs.bzl", "zig_srcs")
+
 
 zig_library(
     name = "async",
@@ -18,3 +20,14 @@ zig_library(
         "@libxev//:xev",
     ],
 )
+
+zig_test(
+    name = "test",
+    deps = [":async"],
+    testonly = False,
+)
+
+zig_srcs(
+    name = "sources",
+    zig_bin = ":test",
+)

async/async.zig

@@ -1,13 +1,19 @@
 const std = @import("std");
+
 const stdx = @import("stdx");
 const xev = @import("xev").Dynamic;
+const XevThreadPool = @import("xev").ThreadPool;
+
+const aio = @import("asyncio.zig");
+const channel_mod = @import("channel.zig");
 const coro = @import("coro.zig");
 const executor = @import("executor.zig");
-const channel_mod = @import("channel.zig");
-const aio = @import("asyncio.zig");
 const stack = @import("stack.zig");
 
-const XevThreadPool = @import("xev").ThreadPool;
+test {
+    std.testing.refAllDecls(@This());
+    std.testing.refAllDecls(coro);
+}
 
 pub const Condition = struct {
     inner: executor.Condition,

async/coro.zig

@@ -265,29 +265,6 @@ const CoroT = struct {
     }
 };
 
-/// Estimates the remaining stack size in the currently running coroutine
-pub noinline fn remainingStackSize() usize {
-    var dummy: usize = 0;
-    dummy += 1;
-    const addr = @intFromPtr(&dummy);
-
-    // Check if the stack was already overflowed
-    const current = xframe();
-    StackOverflow.check(current) catch return 0;
-
-    // Check if the stack is currently overflowed
-    const bottom = @intFromPtr(current.stack.ptr);
-    if (addr < bottom) {
-        return 0;
-    }
-
-    // Debug check that we're actually in the stack
-    const top = @intFromPtr(current.stack.ptr + current.stack.len);
-    std.debug.assert(addr < top); // should never have popped beyond the top
-
-    return addr - bottom;
-}
-
 // ============================================================================
 
 /// Thread-local coroutine runtime
@@ -450,7 +427,9 @@ fn testSetIdx(val: usize) void {
 }
 
 fn testFn() void {
-    std.debug.assert(remainingStackSize() > 2048);
+    // Check if the stack was already overflowed
+    const current = xframe();
+    std.debug.assert(current.stack.remaining().len > 2048);
     testSetIdx(2);
     xsuspend();
     testSetIdx(4);

bazel/zig_srcs.bzl

@@ -0,0 +1,34 @@
+load("@aspect_bazel_lib//lib:tar.bzl", "mtree_spec", "tar")
+load("@rules_zig//zig:defs.bzl", "zig_binary", "BINARY_KIND")
+
+def zig_srcs(name, zig_bin="", zig_lib=""):
+    """For a given zig_library, recursively extract all zig sources into a tarball.
+
+    This also includes the files translated from C headers.
+    It's also possible to pass zig_lib instead of zig_bin in which case,
+    The rule takes care of creating an intermediary binary from the lib.
+    """
+    if zig_bin == "":
+        zig_bin = "{}_bin".format(name)
+        zig_binary(
+            name = zig_bin,
+            kind = BINARY_KIND.bc,
+            tags = ["manual", "@rules_zig//zig/lib:libc"],
+            deps = [zig_lib],
+        )
+
+    native.filegroup(
+        name = "{}_files".format(name),
+        srcs = [zig_bin],
+        output_group = "srcs",
+    )
+    mtree_spec(
+        name = "{}_mtree".format(name),
+        srcs = [":{}_files".format(name)],
+    )
+    tar(
+        name = name,
+        srcs = ["{}_files".format(name)],
+        args = [],
+        mtree = "{}_mtree".format(name),
+    )

mlir/BUILD.bazel

@@ -1,5 +1,7 @@
 load("@rules_cc//cc:defs.bzl", "cc_library")
+
 load("@rules_zig//zig:defs.bzl", "zig_library")
+load("//bazel:zig_srcs.bzl", "zig_srcs")
 load("//bazel:zig.bzl", "zig_cc_test")
 
 cc_library(
@@ -30,3 +32,13 @@ zig_cc_test(
     name = "test",
     deps = [":mlir"],
 )
+
+cc_static_library(
+    name="mlir_static",
+    deps = ["c"]
+)
+
+zig_srcs(
+    name = "sources",
+    zig_bin = ":test_test_lib",
+)

mlir/dialects/BUILD.bazel

@@ -1,5 +1,6 @@
 load("@rules_zig//zig:defs.bzl", "zig_library")
 load("//bazel:zig.bzl", "zig_cc_test")
+load("//bazel:zig_srcs.bzl", "zig_srcs")
 
 zig_library(
     name = "dialects",
@@ -24,6 +25,19 @@ zig_cc_test(
     deps = [":dialects"],
 )
 
+zig_srcs(
+    name = "sources",
+    zig_bin = ":test_test_lib",
+)
+
+cc_static_library(
+    name="mlir_static",
+    deps = [
+        "//mlir:c",
+        "@stablehlo//:stablehlo_dialect_capi",
+    ]
+)
+
 zig_library(
     name = "stablehlo",
     import_name = "mlir/dialects/stablehlo",

mlir/mlir.zig

@@ -8,6 +8,8 @@ const log = std.log.scoped(.mlir);
 
 test {
     std.testing.refAllDecls(@This());
+
+    _ = try Context.init();
 }
 
 const Error = error{

pjrt/BUILD.bazel

@@ -1,15 +1,7 @@
-load("@rules_cc//cc:defs.bzl", "cc_library")
 load("@rules_zig//zig:defs.bzl", "zig_library")
 load("@zml//bazel:zig.bzl", "zig_cc_binary")
-load("//bazel:zig_proto_library.bzl", "zig_proto_library")
+load("@zml//bazel:zig_srcs.bzl", "zig_srcs")
-
+load("@zml//bazel:zig_proto_library.bzl", "zig_proto_library")
-cc_library(
-    name = "dlfcn",
-    hdrs = ["dlfcn.h"],
-    target_compatible_with = [
-        "@platforms//os:linux",
-    ],
-)
 
 zig_library(
     name = "pjrt",
@@ -32,10 +24,12 @@ zig_library(
         "@xla//xla/pjrt/c:pjrt_c_api_hdrs",
         "@xla//xla/pjrt/c:pjrt_c_api_profiler_extension_hdrs",
         "@xla//xla/pjrt/c:pjrt_c_api_triton_extension_hdrs",
-    ] + select({
+    ],
-        "@platforms//os:linux": [":dlfcn"],
+)
-        "//conditions:default": [],
+
-    }),
+zig_srcs(
+    name = "sources",
+    zig_lib = ":pjrt",
 )
 
 zig_proto_library(

pjrt/dlfcn.h

@@ -1 +0,0 @@
-#include <dlfcn.h>

pjrt/pjrt.zig

@@ -74,20 +74,19 @@ pub const Api = struct {
 
     inner: c.PJRT_Api,
 
-    pub fn loadFrom(library: []const u8) !*const Api {
+    pub fn loadFrom(library: [:0]const u8) !*const Api {
         var lib: std.DynLib = switch (builtin.os.tag) {
             .linux => blk: {
-                const library_c = try std.posix.toPosixPath(library);
+                const handle = std.c.dlopen(library, .{ .LAZY = true, .GLOBAL = false, .NODELETE = true }) orelse {
-                break :blk .{
-                    .inner = .{
-                        .handle = c.dlopen(&library_c, c.RTLD_LAZY | c.RTLD_LOCAL | c.RTLD_NODELETE) orelse {
                     log.err("Unable to dlopen plugin: {s}", .{library});
                     return error.FileNotFound;
-                        },
-                    },
                 };
+                break :blk .{ .inner = .{ .handle = handle } };
+            },
+            else => std.DynLib.open(library) catch |err| {
+                log.err("Unable to dlopen plugin: {s}", .{library});
+                return err;
             },
-            else => try std.DynLib.open(library),
         };
         const DynGetPjrtApi = lib.lookup(*const fn () callconv(.C) *const Api, "GetPjrtApi") orelse {
             std.debug.panic("Unable to find GetPjrtApi symbol in library: {s}", .{library});

runtimes/cuda/cuda.zig

@@ -36,7 +36,8 @@ fn setupXlaGpuCudaDirFlag() !void {
     defer arena.deinit();
 
     var r_ = try runfiles.Runfiles.create(.{ .allocator = arena.allocator() }) orelse {
-        stdx.debug.panic("Unable to find CUDA directory", .{});
+        log.warn("Unable to find CUDA directory. Using system defaults.", .{});
+        return;
     };
 
     const source_repo = bazel_builtin.current_repository;

stdx/BUILD.bazel

@@ -1,4 +1,5 @@
-load("@rules_zig//zig:defs.bzl", "zig_library")
+load("@rules_zig//zig:defs.bzl", "zig_library", "zig_test")
+load("@zml//bazel:zig_srcs.bzl", "zig_srcs")
 
 zig_library(
     name = "stdx",
@@ -17,3 +18,14 @@ zig_library(
     main = "stdx.zig",
     visibility = ["//visibility:public"],
 )
+
+zig_test(
+    name = "test",
+    deps = [":stdx"],
+    testonly = False,
+)
+
+zig_srcs(
+    name = "sources",
+    zig_bin = ":test",
+)

stdx/queue.zig

@@ -91,7 +91,7 @@ test SPSC {
     try testing.expect(q.empty());
 
     // Elems
-    var elems: [10]Elem = .{.{}} ** 10;
+    var elems: [10]Elem = @splat(.{});
 
     // One
     try testing.expect(q.pop() == null);
@@ -207,7 +207,7 @@ test MPSC {
     q.init();
 
     // Elems
-    var elems: [10]Elem = .{.{}} ** 10;
+    var elems: [10]Elem = @splat(.{});
 
     // One
     try testing.expect(q.pop() == null);

stdx/stdx.zig

@@ -8,6 +8,11 @@ pub const meta = @import("meta.zig");
 pub const queue = @import("queue.zig");
 pub const time = @import("time.zig");
 
+test {
+    const std = @import("std");
+    std.testing.refAllDecls(@This());
+}
+
 pub inline fn stackSlice(comptime max_len: usize, T: type, len: usize) []T {
     debug.assert(len <= max_len, "stackSlice can only create a slice of up to {} elements, got: {}", .{ max_len, len });
     var storage: [max_len]T = undefined;

third_party/modules/rules_zig/20250613.0-567662a/MODULE.bazel

@@ -0,0 +1,68 @@
+module(
+    name = "rules_zig",
+    version = "20250613.0-567662a",
+    compatibility_level = 1,
+)
+
+bazel_dep(name = "aspect_bazel_lib", version = "2.8.1")
+bazel_dep(name = "bazel_skylib", version = "1.7.1")
+bazel_dep(name = "platforms", version = "0.0.10")
+
+zig = use_extension("//zig:extensions.bzl", "zig")
+zig.index(file = "//zig/private:versions.json")
+use_repo(zig, "zig_toolchains")
+
+register_toolchains("@rules_zig//zig/target:all")
+
+register_toolchains("@zig_toolchains//:all")
+
+zig_dev = use_extension(
+    "//zig:extensions.bzl",
+    "zig",
+    dev_dependency = True,
+)
+zig_dev.toolchain(zig_version = "0.13.0")
+zig_dev.toolchain(zig_version = "0.12.1")
+zig_dev.toolchain(zig_version = "0.12.0")
+zig_dev.toolchain(zig_version = "0.11.0")
+
+bazel_dep(name = "rules_cc", version = "0.0.9")
+bazel_dep(name = "stardoc", version = "0.7.0", dev_dependency = True, repo_name = "io_bazel_stardoc")
+bazel_dep(name = "gazelle", version = "0.38.0", dev_dependency = True, repo_name = "bazel_gazelle")
+bazel_dep(name = "bazel_skylib_gazelle_plugin", version = "1.7.1", dev_dependency = True)
+bazel_dep(
+    name = "buildifier_prebuilt",
+    version = "7.3.1",
+    dev_dependency = True,
+)
+bazel_dep(name = "rules_multirun", version = "0.9.0", dev_dependency = True)
+bazel_dep(name = "rules_python", version = "0.35.0", dev_dependency = True)
+bazel_dep(
+    name = "rules_bazel_integration_test",
+    version = "0.25.0",
+    dev_dependency = True,
+)
+
+bazel_binaries = use_extension(
+    "@rules_bazel_integration_test//:extensions.bzl",
+    "bazel_binaries",
+    dev_dependency = True,
+)
+
+# NOTE: Keep in sync with WORKSPACE.
+bazel_binaries.download(version_file = "//:.bazelversion")
+bazel_binaries.download(version = "7.0.0")
+use_repo(
+    bazel_binaries,
+    "bazel_binaries",
+    "bazel_binaries_bazelisk",
+    "build_bazel_bazel_.bazelversion",
+    "build_bazel_bazel_7_0_0",
+)
+
+# TODO[AH] Should be an implicit transitive dependency through rules_bazel_integration_test.
+# However, if we do not include it explicitly, then the runfiles resolution for
+# cgrindel_bazel_starlib/shlib/lib/message.sh fails in
+# rules_bazel_integration_test/tools/update_deleted_packages.sh when invoked
+# through the rules_multirun target //util:update.
+bazel_dep(name = "cgrindel_bazel_starlib", version = "0.21.0", dev_dependency = True)

third_party/modules/rules_zig/20250613.0-567662a/source.json

@@ -0,0 +1,5 @@
+{
+    "strip_prefix": "rules_zig-567662a3ce5e87894950d56c69d8de5ad6e0b5f0",
+    "url": "https://github.com/zml/rules_zig/archive/567662a3ce5e87894950d56c69d8de5ad6e0b5f0.tar.gz",
+    "integrity": "sha256-PjFpDJXO0BGx2CAZ54Ppv6d4TwTDOWS+mVangKQFvZc="
+}

third_party/modules/rules_zig/metadata.json

@@ -16,7 +16,8 @@
         "20240912.0-41bfe84",
         "20240913.0-1957d05",
         "20250314.0-b9739c6",
-        "20250519.0-233b207"
+        "20250519.0-233b207",
+        "20250613.0-567662a"
     ],
     "yanked_versions": {}
 }

zml/BUILD.bazel

@@ -1,8 +1,8 @@
-load("@aspect_bazel_lib//lib:tar.bzl", "mtree_spec", "tar")
 load("@rules_cc//cc:defs.bzl", "cc_library")
 load("@rules_zig//zig:defs.bzl", "zig_library")
 load("//bazel:zig.bzl", "zig_cc_test")
 load("//bazel:zig_proto_library.bzl", "zig_proto_library")
+load("//bazel:zig_srcs.bzl", "zig_srcs")
 
 cc_library(
     name = "posix",
@@ -25,7 +25,6 @@ zig_library(
     visibility = ["//visibility:public"],
     deps = [
         ":posix",
-        ":sentencepiece_model_proto",
         ":xla_proto",
         "//async",
         "//mlir",
@@ -35,9 +34,7 @@ zig_library(
         "//stdx",
         "//zml/tokenizer",
         "//zml/tools",
-        "@rules_zig//zig/lib:libc",
         "@rules_zig//zig/runfiles",
-        "@zig-yaml//:zig-yaml",
     ],
 )
 
@@ -47,11 +44,6 @@ zig_proto_library(
     deps = ["@xla//xla/pjrt/proto:compile_options_proto"],
 )
 
-zig_proto_library(
-    name = "sentencepiece_model_proto",
-    import_name = "//sentencepiece:model_proto",
-    deps = ["@sentencepiece//:sentencepiece_model_proto"],
-)
 
 # All ZML Tests
 
@@ -71,21 +63,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
 
-filegroup(
+zig_srcs(
-    name = "srcs",
-    srcs = [":test_test_lib"],
-    output_group = "srcs",
-)
-
-mtree_spec(
-    name = "mtree",
-    srcs = [":srcs"],
-)
-
-tar(
     name = "sources",
-    srcs = [":srcs"],
+    zig_bin = ":test_test_lib",
-    args = [
-    ],
-    mtree = ":mtree",
 )

zml/aio.zig

@@ -5,11 +5,11 @@ const c = @import("c");
 const stdx = @import("stdx");
 
 pub const gguf = @import("aio/gguf.zig");
-pub const nemo = @import("aio/nemo.zig");
+// pub const nemo = @import("aio/nemo.zig");
 pub const safetensors = @import("aio/safetensors.zig");
 pub const tinyllama = @import("aio/tinyllama.zig");
 pub const torch = @import("aio/torch.zig");
-pub const yaml = @import("aio/yaml.zig");
+// pub const yaml = @import("aio/yaml.zig");
 const HostBuffer = @import("hostbuffer.zig").HostBuffer;
 const posix = @import("posix.zig");
 const zml = @import("zml.zig");
@@ -18,10 +18,10 @@ pub const log = std.log.scoped(.@"zml/aio");
 test {
     std.testing.refAllDecls(@This());
     std.testing.refAllDecls(gguf);
-    std.testing.refAllDecls(nemo);
+    // std.testing.refAllDecls(nemo);
     std.testing.refAllDecls(safetensors);
     std.testing.refAllDecls(torch);
-    std.testing.refAllDecls(yaml);
+    // std.testing.refAllDecls(yaml);
 }
 
 // TODO error set for weight loading

zml/tokenizer/hftokenizers/BUILD.bazel

@@ -28,3 +28,11 @@ zig_library(
         "//ffi:zig",
     ],
 )
+
+cc_static_library(
+    name="hftokenizer_static",
+    deps = [
+        ":hftokenizers_rs",
+        "//ffi:cc",
+    ]
+)

zml/tokenizer/sentencepiece/BUILD.bazel

@@ -1,5 +1,6 @@
 load("@rules_zig//zig:defs.bzl", "zig_library")
 load("//bazel:swig.bzl", "swig_cc_library")
+load("//bazel:zig_srcs.bzl", "zig_srcs")
 
 swig_cc_library(
     name = "sentencepiece_swig",
@@ -21,3 +22,8 @@ zig_library(
         "//ffi:zig",
     ],
 )
+
+zig_srcs(
+    name = "sources",
+    zig_lib = ":sentencepiece",
+)

zml/tokenizer/tokenizer.zig

@@ -1,10 +1,18 @@
 const std = @import("std");
+
+const asynk = @import("async");
 const hftokenizers = @import("hftokenizers");
 const sentencepiece = @import("sentencepiece");
-const asynk = @import("async");
 
 const homemade = @import("homemade.zig");
 
+test {
+    std.testing.refAllDecls(@This());
+    std.testing.refAllDecls(hftokenizers);
+    std.testing.refAllDecls(sentencepiece);
+    std.testing.refAllDecls(homemade);
+}
+
 const Tokenizers = enum {
     hftokenizers,
     sentencepiece,

zml/tools/BUILD.bazel

@@ -22,3 +22,8 @@ zig_library(
         "//conditions:default": [],
     }),
 )
+
+cc_static_library(
+    name = "macos_static_tools",
+    deps = ["macos_c"]
+)