feat: expose module for zig build system

build.zig

@@ -15,42 +15,39 @@ pub fn build(b: *std.Build) void {
     // set a preferred release mode, allowing the user to decide how to optimize.
     const optimize = b.standardOptimizeOption(.{});
 
-    const lib = b.addStaticLibrary(.{
-        .name = "arm32",
-        // In this case the main source file is merely a path, however, in more
-        // complicated build scripts, this could be a generated file.
-        .root_source_file = .{ .path = "src/lib.zig" },
-        .target = target,
-        .optimize = optimize,
-    });
-
-    const zba_util_mod = b.dependency("zba-util", .{}).module("zba-util");
+    const util_dep = b.dependency("zba-util", .{});
     const bitfield_mod = b.createModule(.{ .source_file = .{ .path = "lib/bitfield.zig" }, .dependencies = &.{} });
 
-    lib.addModule("zba-util", zba_util_mod); // https://git.musuka.dev/paoda/zba-util
-    lib.addModule("bitfield", bitfield_mod);
-
-    // This declares intent for the library to be installed into the standard
-    // location when the user invokes the "install" step (the default step when
-    // running `zig build`).
-    b.installArtifact(lib);
+    _ = b.addModule("arm32", .{
+        .source_file = .{ .path = "src/lib.zig" },
+        .dependencies = &.{
+            .{
+                .name = "zba-util",
+                .module = util_dep.module("zba-util"),
+            },
+            .{
+                .name = "bitfield",
+                .module = bitfield_mod,
+            },
+        },
+    });
 
     // Creates a step for unit testing. This only builds the test executable
     // but does not run it.
-    const main_tests = b.addTest(.{
+    const lib_tests = b.addTest(.{
         .root_source_file = .{ .path = "src/lib.zig" },
         .target = target,
         .optimize = optimize,
     });
 
-    main_tests.addModule("zba-util", zba_util_mod); // https://git.musuka.dev/paoda/zba-util
-    main_tests.addModule("bitfield", bitfield_mod);
+    lib_tests.addModule("zba-util", util_dep.module("zba-util")); // https://git.musuka.dev/paoda/zba-util
+    lib_tests.addModule("bitfield", bitfield_mod);
 
-    const run_main_tests = b.addRunArtifact(main_tests);
+    const run_lib_tests = b.addRunArtifact(lib_tests);
 
     // This creates a build step. It will be visible in the `zig build --help` menu,
     // and can be selected like this: `zig build test`
     // This will evaluate the `test` step rather than the default, which is "install".
     const test_step = b.step("test", "Run library tests");
-    test_step.dependOn(&run_main_tests.step);
+    test_step.dependOn(&run_lib_tests.step);
 }