When we use deps in swift_library.

swift_library(
    name = "Sources",
    srcs = [
        "AppDelegate.swift",
    ],
    module_name = "Sources",
    #private_deps = [
    #    "//srcs/A:a_lib",
    #    "//srcs/B:b_lib",
    #]
    deps = [
        "//srcs/A:a_lib",
        "//srcs/B:b_lib",
    ]
)

Run this command in terminal to build an ipa.

bazel build //:private_deps_demo

Unarchive bazel-bin/private_deps_demo.ipa, we will see bazel-swift.png & bazel-objc.png in Payload.

But when we use private_deps in swift_library.

swift_library(
    name = "Sources",
    srcs = [
        "AppDelegate.swift",
    ],
    module_name = "Sources",
    private_deps = [
        "//srcs/A:a_lib",
        "//srcs/B:b_lib",
    ]
    #deps = [
    #    "//srcs/A:a_lib",
    #    "//srcs/B:b_lib",
    #]
)

We run the same command in terminal to build another ipa.

bazel build //:private_deps_demo

Let's unarchive bazel-bin/private_deps_demo.ipa again.

This time, there is no bazel-swift.png & bazel-objc.png in Payload.

I don't think this is an expected output. This behavior may cause some unexpected resource lost, and it's hard to discover which resources are missing.