fix: make modules depend on codegen

build.zig

@@ -64,17 +64,6 @@ pub fn build(b: *Builder) !void {
     const smithy_module = smithy_dep.module("smithy");
     exe.root_module.addImport("smithy", smithy_module); // not sure this should be here...
 
-    // Expose module to others
-    _ = b.addModule("aws", .{
-        .root_source_file = b.path("src/aws.zig"),
-        .imports = &.{.{ .name = "smithy", .module = smithy_module }},
-    });
-
-    // Expose module to others
-    _ = b.addModule("aws-signing", .{
-        .root_source_file = b.path("src/aws_signing.zig"),
-        .imports = &.{.{ .name = "smithy", .module = smithy_module }},
-    });
     // TODO: This does not work correctly due to https://github.com/ziglang/zig/issues/16354
     //
     // We are working here with kind of a weird dependency though. So we can do this
@@ -97,7 +86,6 @@ pub fn build(b: *Builder) !void {
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
 
-    const gen_step = blk: {
     const cg = b.step("gen", "Generate zig service code from smithy models");
 
     const cg_exe = b.addExecutable(.{
@@ -129,7 +117,7 @@ pub fn build(b: *Builder) !void {
         },
     ));
     cg_cmd.addArg("--output");
-        cg_cmd.addDirectoryArg(b.path("src/models"));
+    const cg_output_dir = cg_cmd.addOutputDirectoryArg("src/models");
     if (b.verbose)
         cg_cmd.addArg("--verbose");
     // cg_cmd.step.dependOn(&fetch_step.step);
@@ -148,10 +136,31 @@ pub fn build(b: *Builder) !void {
     // later about warning on manual changes...
 
     cg.dependOn(&cg_cmd.step);
-        break :blk cg;
-    };
 
-    exe.step.dependOn(gen_step);
+    exe.step.dependOn(cg);
+
+    // This allows us to have each module depend on the
+    // generated service manifest.
+    const service_manifest_module = b.createModule(.{
+        .root_source_file = cg_output_dir.path(b, "service_manifest.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // Expose module to others
+    _ = b.addModule("aws", .{
+        .root_source_file = b.path("src/aws.zig"),
+        .imports = &.{
+            .{ .name = "smithy", .module = smithy_module },
+            .{ .name = "service_manifest", .module = service_manifest_module },
+        },
+    });
+
+    // Expose module to others
+    _ = b.addModule("aws-signing", .{
+        .root_source_file = b.path("src/aws_signing.zig"),
+        .imports = &.{.{ .name = "smithy", .module = smithy_module }},
+    });
 
     // Similar to creating the run step earlier, this exposes a `test` step to
     // the `zig build --help` menu, providing a way for the user to request
@@ -182,7 +191,7 @@ pub fn build(b: *Builder) !void {
             .optimize = optimize,
         });
         unit_tests.root_module.addImport("smithy", smithy_dep.module("smithy"));
-        unit_tests.step.dependOn(gen_step);
+        unit_tests.step.dependOn(cg);
 
         const run_unit_tests = b.addRunArtifact(unit_tests);
         run_unit_tests.skip_foreign_checks = true;
@@ -205,7 +214,7 @@ pub fn build(b: *Builder) !void {
         .optimize = optimize,
     });
     smoke_test.root_module.addImport("smithy", smithy_dep.module("smithy"));
-    smoke_test.step.dependOn(gen_step);
+    smoke_test.step.dependOn(cg);
 
     const run_smoke_test = b.addRunArtifact(smoke_test);
 

src/servicemodel.zig

@@ -1,5 +1,5 @@
 const std = @import("std");
-const service_list = @import("models/service_manifest.zig");
+const service_list = @import("service_manifest");
 const expectEqualStrings = std.testing.expectEqualStrings;
 
 pub fn Services(comptime service_imports: anytype) type {