How can I manage my swift-grpc generated code with SwiftPM?

I am new to grpc and am planning to use it for my iOS client and Swift server. I have a Swift package repo consisting of just the .protos and generated swift code. I'm having trouble building the protoc plugins, because my my-project-grpc/Sources/MyLibrary/ directory is initially void of Swift code (it will be generated later); however, it is expected to contain Swift code, because I am declaring a .library product in my Package.swift. Is there a workaround for this, or is there a better way to manage and share my generated code between Swift projects? I am using v2 alpha of swift-grpc. Thanks!

Here's how I plan to use my grpc project / package

  1. Run build-protoc-plugins.sh script to build protoc plugins
  2. Generate swift code using protoc plugins with generate.sh script
  3. Commit/tag generated code version
  4. Import in client/server

Here's my project structure for the grpc repo
my-project-grpc/
|__Sources/
| |__MyLibraryGRPC/
|   |__Model/
|   | |__myservice.proto
|   |__Generated/
|    |__myservice.grpc.swift
|    |__myservice.pb.swift
|__build-protoc-plugins.sh
|__generate.sh
|__Package.swift

Here's my Package.swift

// swift-tools-version: 6.0
import PackageDescription

let package = Package(
    name: "my-project-grpc",
    platforms: [.macOS("15.0")],
    products: [
        .library(
            name: "MyLibraryGRPC",
            targets: ["MyLibraryTarget"]),
    ],
    dependencies: [
        .package(url: "https://github.com/grpc/grpc-swift-nio-transport.git", from: "1.0.0-alpha.1"),
        .package(url: "https://github.com/grpc/grpc-swift-protobuf.git", from: "1.0.0-alpha.1"),
    ],
    targets: [
        .target(
            name: "MyLibraryGRPCTarget",
            dependencies: [
                .product(name: "GRPCNIOTransportHTTP2", package: "grpc-swift-nio-transport"),
                .product(name: "GRPCProtobuf", package: "grpc-swift-protobuf"),
            ]
        )
    ]
)

Here's the build error:

sh build-protoc-plugins.sh
warning: 'my-project-grpc': Source files for target MyLibraryGRPCTarget should be located under 'Sources/MyLibraryGRPC', 'Sources', or a custom sources path can be set with the 'path' property in Package.swift
error: 'my-project-grpc': target 'MyLibraryGRPCTarget' referenced in product 'MyLibraryGRPC' is empty

This is the build-protoc-plugins.sh line that is failing:
swift build --product protoc-gen-swift --configuration release