ios – SPM Package deal.swift Conditional Dependencies

I am attempting to have some circumstances that may add some dependencies to my app in sure circumstances.
right here is an instance of my Package deal.swift

`
import PackageDescription

let package deal = Package deal(
title: “MyService”,
platforms: [.iOS(.v16), .macOS(.v12)],
merchandise: [
.library(
name: “MyService”,
targets: [“MyService”])
],
dependencies: ifMockableDev(add: mockableProductDependencies) + [

    .package(
        url: "https://github.com/hmlongco/Factory",
        branch: "swift6"
    )
],
targets: [
    .target(
        name: "MyService",
        dependencies: ifMockableDev(add: mockableTargetDependencies) + [
           
            .product(name: "Factory", package: "Factory")
        ],
        swiftSettings: [
            .define("MOCKING", .when(configuration: .debug)),
            .enableExperimentalFeature("StrictConcurrency")
        ]
    ),

    .testTarget(
        title: "MyServiceTests",
        dependencies: ifMockableDev(add: mockableTestTargetDependencies) + [
            "MyService",
            .product(name: "Factory", package: "Factory")
        ])
]

)

non-public let isMockableDev = Context.surroundings[“MOCKABLE_DEV”].flatMap(Bool.init) ?? true

non-public func ifMockableDev(add listing: [T]) -> [T] { isMockableDev ? listing : [] }

non-public let mockableProductDependencies: [Package.Dependency] = [
.package(url: “https://github.com/Kolos65/Mockable”, exact: “0.0.11”)
]

non-public let mockableTargetDependencies: [Target.Dependency] = [
.product(name: “Mockable”, package: “Mockable”)
]

non-public let mockableTestTargetDependencies: [Target.Dependency] = [
.product(name: “MockableTest”, package: “Mockable”)
]
`

I suspected that MOCKABLE_DEV is just not getting seen within the environement. however even when I simply made it
non-public let isMockableDev = true
nonetheless would not get the Packages in any respect.. what am I lacking right here?