Use isSPIBuild to avoid upstream build platform version issue (#4)

Author: Kyle-Ye

Package.swift

@@ -23,10 +23,10 @@ let buildForDarwinPlatform = envEnable("OPENSWIFTUI_BUILD_FOR_DARWIN_PLATFORM",
 let buildForDarwinPlatform = envEnable("OPENSWIFTUI_BUILD_FOR_DARWIN_PLATFORM")
 #endif
 
-
 // https://github.com/SwiftPackageIndex/SwiftPackageIndex-Server/issues/3061#issuecomment-2118821061
 // By-pass https://github.com/swiftlang/swift-package-manager/issues/7580
 let isSPIDocGenerationBuild = envEnable("SPI_GENERATE_DOCS", default: false)
+let isSPIBuild = envEnable("SPI_BUILD")
 
 // MARK: - Env and Config
 
@@ -125,7 +125,7 @@ let package = Package(
 
 let useLocalDeps = envEnable("OPENBOX_USE_LOCAL_DEPS")
 
-let renderBoxCondtion = envEnable("OPENBOX_RENDERBOX", default: buildForDarwinPlatform && !isSPIDocGenerationBuild )
+let renderBoxCondtion = envEnable("OPENBOX_RENDERBOX", default: buildForDarwinPlatform && !isSPIBuild )
 
 if renderBoxCondtion {
     let privateFrameworkRepo: Package.Dependency