Trouble integrating latest BraintreeDropIn pod to NativeScript app

I am trying to update the native dependencies within the nativescript-braintree plugin. While everything works as expected on Android side, I am struggling to make the ios build process working.

The migration guide says:

The Braintree iOS v5 SDK requires Xcode 12+, Swift 5.1+ and a minimum deployment target of iOS 12.0.
If your application contains Objective-C code, the Enable Modules build setting must be set to YES.

I am adding the following to App_Resources/iOS/Podfile:

platform :ios, '12.0'
pod 'BraintreeDropIn', '9.1.0'

And I am adding this to App_Resources/iOS/build.xcconfig:

IPHONEOS_DEPLOYMENT_TARGET = 12.0;
ENABLE_MODULES = YES;

When using version 8.x.y of the BraintreeDropIn pod, everything works as expected. Also when using the latest core pod of the Braintree SDK (Braintree pod version 5.4.2), the build process works as expected, so something is going wrong with the BraintreeDropIn particularly.

I cannot see any issues on Github so I think this is somehow related to NativeScript?

The build log looks like this (only snippets, the whole log file is provided below):

Xcode build...
./.build_env_vars.sh: line 446: declare: UID: readonly variable
NSLD: Swift bridging header '*-Swift.h' not found under '/Users/felixkrautschuk/Library/Developer/Xcode/DerivedData/nsbraintreeiosissue-chekcvderpazmlcjkxssmwilmgen/Build/Intermediates.noindex/nsbraintreeiosissue.build/Debug-iphonesimulator/nsbraintreeiosissue.build/Objects-normal/x86_64'
Generating metadata...~/Downloads/ns-braintree-ios-issue/platforms/ios/internal/metadata-generator-x86_64/bin ~/Downloads/ns-braintree-ios-issue/platforms/ios
Python version: 2.7.16 (default, May 8 2021, 11:48:02)
[GCC Apple LLVM 12.0.5 (clang-1205.0.19.59.6) [+internal-os, ptrauth-isa=deploy
Generating metadata for x86_64
Metadata Generator Arguments:
./objc-metadata-generator -verbose -output-bin /Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/metadata-x86_64.bin -output-umbrella /Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/umbrella-x86_64.h -docset-path /Users/felixkrautschuk/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset Xclang -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk -mios-simulator-version-min=12.0 -std=gnu99 -target x86_64-apple-ios13.0-macabi -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/include -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree/Braintree.framework/Headers -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn/BraintreeDropIn.framework/Headers -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/Swift-Modules -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../App_Resources/iOS/src -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/ -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/Pods/Braintree/Frameworks -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/CardinalMobile -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/PPRiskMagnes -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios -DCOCOAPODS=1 -DDEBUG=1
Clang Arguments:
"-v", "-x", "objective-c", "-fno-objc-arc", "-fmodule-maps", "-ferror-limit=0", "-Wno-unknown-pragmas", "-Wno-ignored-attributes", "-Wno-nullability-completeness", "-Wno-expansion-to-defined", "-D__NATIVESCRIPT_METADATA_GENERATOR=1", "-isysroot", "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk", "-mios-simulator-version-min=12.0", "-std=gnu99", "-target", "x86_64-apple-ios13.0-macabi", "-I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/include", "-I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree/Braintree.framework/Headers", "-I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn/BraintreeDropIn.framework/Headers", "-I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/Swift-Modules", "-I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal", "-I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../App_Resources/iOS/src", "-I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/Pods/Braintree/Frameworks", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/CardinalMobile", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/PPRiskMagnes", "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios", "-DCOCOAPODS=1", "-DDEBUG=1",
Saving metadata generation's stderr stream to: /Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/metadata-generation-stderr-x86_64.txt
Error: Unable to generate metadata for x86_64.
Metadata Generator Arguments:
./objc-metadata-generator -verbose -output-bin /Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/metadata-x86_64.bin -output-umbrella /Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/umbrella-x86_64.h -docset-path /Users/felixkrautschuk/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset Xclang -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk -mios-simulator-version-min=12.0 -std=gnu99 -target x86_64-apple-ios13.0-macabi -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/include -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree/Braintree.framework/Headers -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn/BraintreeDropIn.framework/Headers -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/Swift-Modules -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../App_Resources/iOS/src -I/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/ -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/Pods/Braintree/Frameworks -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/CardinalMobile -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/PPRiskMagnes -F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios -DCOCOAPODS=1 -DDEBUG=1
clang version 8.0.0 (tags/RELEASE_800/final)
Target: x86_64-apple-ios13.0-macabi
Thread model: posix
InstalledDir:
warning: overriding '-mios-simulator-version-min=12.0' option with '--target=x86_64-apple-ios13.0-macabi' [-Woverriding-t-option]
clang Invocation:
"clang-tool" "-cc1" "-triple" "x86_64-apple-ios13.0.0-simulator" "-Wdeprecated-objc-isa-usage" "-Werror=deprecated-objc-isa-usage" "-Werror=implicit-function-declaration" "-fsyntax-only" "-disable-free" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "umbrella.h" "-mrelocation-model" "pic" "-pic-level" "2" "-mthread-model" "posix" "-mdisable-fp-elim" "-masm-verbose" "-munwind-tables" "-target-sdk-version=14.5" "-target-cpu" "core2" "-dwarf-column-info" "-debugger-tuning=lldb" "-ggnu-pubnames" "-target-linker-version" "507.6" "-v" "-resource-dir" "lib/clang/8.0.0" "-isysroot" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk" "-D" "__NATIVESCRIPT_METADATA_GENERATOR=1" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/include" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree/Braintree.framework/Headers" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn/BraintreeDropIn.framework/Headers" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/Swift-Modules" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../App_Resources/iOS/src" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/Pods/Braintree/Frameworks" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/CardinalMobile" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/PPRiskMagnes" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios" "-D" "COCOAPODS=1" "-D" "DEBUG=1" "-Wno-unknown-pragmas" "-Wno-ignored-attributes" "-Wno-nullability-completeness" "-Wno-expansion-to-defined" "-std=gnu99" "-fdebug-compilation-dir" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/metadata-generator-x86_64/bin" "-ferror-limit" "0" "-fmessage-length" "0" "-stack-protector" "1" "-fblocks" "-fencode-extended-block-signature" "-fimplicit-module-maps" "-fregister-global-dtors-with-atexit" "-fobjc-runtime=ios-13.0.0" "-fobjc-exceptions" "-fexceptions" "-fmax-type-align=16" "-fdiagnostics-show-option" "-x" "objective-c" "umbrella.h"

ignoring nonexistent directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/include"
ignoring nonexistent directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/Swift-Modules"
ignoring nonexistent directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../App_Resources/iOS/src"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/local/include"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/Library/Frameworks"
ignoring duplicate directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator"
#include "..." search starts here:
#include <...> search starts here:
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree/Braintree.framework/Headers
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn/BraintreeDropIn.framework/Headers
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/Pods/Braintree/Frameworks (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/CardinalMobile (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/PPRiskMagnes (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios (framework directory)
lib/clang/8.0.0/include
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/System/Library/Frameworks (framework directory)
End of search list.
clang version 8.0.0 (tags/RELEASE_800/final)
Target: x86_64-apple-ios13.0-macabi
Thread model: posix
InstalledDir:
warning: overriding '-mios-simulator-version-min=12.0' option with '--target=x86_64-apple-ios13.0-macabi' [-Woverriding-t-option]
clang Invocation:
"objc-metadata-generator" "-cc1" "-triple" "x86_64-apple-ios13.0.0-simulator" "-Wdeprecated-objc-isa-usage" "-Werror=deprecated-objc-isa-usage" "-Werror=implicit-function-declaration" "-fsyntax-only" "-disable-free" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "umbrella.h" "-mrelocation-model" "pic" "-pic-level" "2" "-mthread-model" "posix" "-mdisable-fp-elim" "-masm-verbose" "-munwind-tables" "-target-sdk-version=14.5" "-target-cpu" "core2" "-dwarf-column-info" "-debugger-tuning=lldb" "-ggnu-pubnames" "-target-linker-version" "507.6" "-v" "-resource-dir" "lib/clang/8.0.0" "-isysroot" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/dispatch" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/libxml" "-idirafter" "lib/clang/8.0.0/include" "-idirafter" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/mach-o" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/unicode" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/objc" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/simd" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/CommonCrypto" "-idirafter" "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/AppleArchive" "-D" "__NATIVESCRIPT_METADATA_GENERATOR=1" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/include" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree/Braintree.framework/Headers" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn/BraintreeDropIn.framework/Headers" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/Swift-Modules" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../App_Resources/iOS/src" "-I" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/Pods/Braintree/Frameworks" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/CardinalMobile" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/PPRiskMagnes" "-F/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios" "-D" "COCOAPODS=1" "-D" "DEBUG=1" "-Wno-unknown-pragmas" "-Wno-ignored-attributes" "-Wno-nullability-completeness" "-Wno-expansion-to-defined" "-std=gnu99" "-fdebug-compilation-dir" "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/metadata-generator-x86_64/bin" "-ferror-limit" "0" "-fmessage-length" "0" "-stack-protector" "1" "-fblocks" "-fencode-extended-block-signature" "-fimplicit-module-maps" "-fregister-global-dtors-with-atexit" "-fobjc-runtime=ios-13.0.0" "-fobjc-exceptions" "-fexceptions" "-fmax-type-align=16" "-fdiagnostics-show-option" "-x" "objective-c" "umbrella.h"

clang -cc1 version 8.0.0 based upon LLVM 8.0.0 default target x86_64-apple-darwin20.5.0
ignoring nonexistent directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/include"
ignoring nonexistent directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal/Swift-Modules"
ignoring nonexistent directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../App_Resources/iOS/src"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/local/include"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/Library/Frameworks"
ignoring duplicate directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator"
ignoring duplicate directory "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include"
ignoring duplicate directory "lib/clang/8.0.0/include"
ignoring duplicate directory "/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src"
as it is a non-system directory that duplicates a system directory
#include "..." search starts here:
#include <...> search starts here:
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree/Braintree.framework/Headers
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn/BraintreeDropIn.framework/Headers
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/internal (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/Braintree (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/BraintreeDropIn (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/Pods/Braintree/Frameworks (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/CardinalMobile (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/build/Debug-iphonesimulator/XCFrameworkIntermediates/PPRiskMagnes (framework directory)
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios (framework directory)
lib/clang/8.0.0/include
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/System/Library/Frameworks (framework directory)
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/dispatch
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/libxml
/Users/felixkrautschuk/Downloads/ns-braintree-ios-issue/platforms/ios/../../node_modules/@nativescript/core/platforms/ios/src
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/mach-o
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/unicode
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/objc
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/simd
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/CommonCrypto
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/AppleArchive
End of search list.
In file included from umbrella.h:71:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/dlfcn.h:64:37: warning: unknown platform 'driverkit' in availability macro [-Wavailability]
extern int dlclose(void * __handle) __DYLDDL_DRIVERKIT_UNAVAILABLE;
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/dlfcn.h:44:41: note: expanded from macro '__DYLDDL_DRIVERKIT_UNAVAILABLE'
#define __DYLDDL_DRIVERKIT_UNAVAILABLE __API_UNAVAILABLE(driverkit)
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/usr/include/Availability.h:419:190: note: expanded from macro '__API_UNAVAILABLE'
#define __API_UNAVAILABLE(...) __API_UNAVAILABLE_GET_MACRO(VA_ARGS,__API_UNAVAILABLE7,__API_UNAVAILABLE6,__API_UNAVAILABLE5,__API_UNAVAILABLE4,__API_UNAVAILABLE3,__API_UNAVAILABLE2,__API_UNAVAILABLE1, 0)(VA_ARGS) ^
In file included from umbrella.h:522:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks/MetalPerformanceShaders.framework/Headers/MetalPerformanceShaders.h:12:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/System/Library/Frameworks/MetalPerformanceShaders.framework/Frameworks/MPSCore.framework/Headers/MPSCore.h:14:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/System/Library/Frameworks/MetalPerformanceShaders.framework/Frameworks/MPSCore.framework/Headers/MPSCoreTypes.h:241:23: warning: unknown platform 'macCatalyst' in availability macro [-Wavailability]
MPSDataTypeInt8 MPS_ENUM_AVAILABLE_STARTING( macos(10.13), ios(10.0), macCatalyst(13.0), tvos(10.0)) = MPSDataTypeSignedBit | 8,
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk/System/Library/Frameworks/MetalPerformanceShaders.framework/Frameworks/MPSCore.framework/Headers/MPSCoreTypes.h:47:65: note: expanded from macro 'MPS_ENUM_AVAILABLE_STARTING'

define MPS_ENUM_AVAILABLE_STARTING(...) __API_AVAILABLE(VA_ARGS)

...

verbose: Included protocol_copyProtocolList from ObjectiveC.runtime
verbose: Included objc_allocateProtocol from ObjectiveC.runtime
verbose: Included objc_setAssociatedObject from ObjectiveC.runtime
verbose: Included objc_getAssociatedObject from ObjectiveC.runtime
verbose: Included objc_removeAssociatedObjects from ObjectiveC.runtime
verbose: Included CCADirectoryServerIDVisa01 from CardinalMobile.DirectoryServerIDConst
verbose: Included CCADirectoryServerIDVisa02 from CardinalMobile.DirectoryServerIDConst
verbose: Included CCADirectoryServerIDVisa03 from CardinalMobile.DirectoryServerIDConst
verbose: Included CCADirectoryServerIDVisa04 from CardinalMobile.DirectoryServerIDConst
verbose: Included CCADirectoryServerIDMasterCard from CardinalMobile.DirectoryServerIDConst
Command Ld failed with a nonzero exit code
note: Using new build system
note: Building targets in parallel
note: Using codesigning identity override:
note: Planning build
note: Analyzing workspace
note: Constructing build description
note: Build preparation complete
note: Removed stale file '/Users/felixkrautschuk/Library/Developer/Xcode/DerivedData/nsbraintreeiosissue-chekcvderpazmlcjkxssmwilmgen/Build/Intermediates.noindex/nsbraintreeiosissue.build/Debug-iphonesimulator/nsbraintreeiosissue.build/Script-81DAB418CDA54F5900EA768A.sh'
Unable to apply changes on device: 27EB8DF8-CC9D-4747-A7CB-95DF413D358F. Error is: Command xcodebuild failed with exit code 65.

The whole log (about 5 MB) is available here:
build_log.txt

Sample app to reproduce:
ns-braintree-ios-issue.zip

Inspect App_Resources/iOS/Podfile and App_Resources/iOS/build.xcconfig, then reproduce the iOS build with BraintreeDropIn 9.1.0 and compare it with the working 8.x configuration and Braintree 5.4.2 case. Done means the NativeScript iOS build completes and metadata generation succeeds with the newer DropIn pod.