Hello Chris, this solution works only for new projects. For earlier projects even if I delete the said file the preview still does not show. There seems to be something more embedded in the view which is not allowing the preview to show. I am attaching the Diagnostic message hoping that you could find the cause. I have reloaded X code a coupIe of times to see if that was the cause. I find it hard to work without the preview. Thank you again and sorry for being such a pain.
Diagnostic Message
file ‘/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/lib/swift/shims/RuntimeStubs.h’ has been modified since the module file ‘/var/folders/9l/8qbb82213nlct0fd7rmg1vgm0000gn/C/clang/ModuleCache/108X1IN8WGNX1/SwiftShims-2TTN5UXQBRCCQ.pcm’ was built: mtime changed
CompileDylibError: Failed to build ContentView.swift
Compiling failed: file ‘/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/lib/swift/shims/RuntimeStubs.h’ has been modified since the module file ‘/var/folders/9l/8qbb82213nlct0fd7rmg1vgm0000gn/C/clang/ModuleCache/108X1IN8WGNX1/SwiftShims-2TTN5UXQBRCCQ.pcm’ was built: mtime changed
:0: error: file ‘/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/lib/swift/shims/RuntimeStubs.h’ has been modified since the module file ‘/var/folders/9l/8qbb82213nlct0fd7rmg1vgm0000gn/C/clang/ModuleCache/108X1IN8WGNX1/SwiftShims-2TTN5UXQBRCCQ.pcm’ was built: mtime changed
:0: note: please rebuild precompiled header ‘/var/folders/9l/8qbb82213nlct0fd7rmg1vgm0000gn/C/clang/ModuleCache/108X1IN8WGNX1/SwiftShims-2TTN5UXQBRCCQ.pcm’
:1:9: note: in file included from :1:
#import “LibcOverlayShims.h”
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/lib/swift/shims/LibcOverlayShims.h:21:2: error: file ‘/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/lib/swift/shims/RuntimeStubs.h’ has been modified since the module file ‘/var/folders/9l/8qbb82213nlct0fd7rmg1vgm0000gn/C/clang/ModuleCache/108X1IN8WGNX1/SwiftShims-2TTN5UXQBRCCQ.pcm’ was built: mtime changed
#include “Visibility.h”
^
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/lib/swift/shims/LibcOverlayShims.h:21:2: note: please rebuild precompiled header ‘/var/folders/9l/8qbb82213nlct0fd7rmg1vgm0000gn/C/clang/ModuleCache/108X1IN8WGNX1/SwiftShims-2TTN5UXQBRCCQ.pcm’
#include “Visibility.h”
^
:0: error: missing required module ‘SwiftOverlayShims’
==================================
| BuildInvocationError
|
| /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -F /Applications/Xcode.app/Contents/SharedFrameworks-iphonesimulator -enforce-exclusivity=checked -DDEBUG -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk -target arm64-apple-ios14.0-simulator -Xfrontend -serialize-debugging-options -enable-testing -swift-version 5 -I “/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Products/Debug-iphonesimulator” -F “/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Products/Debug-iphonesimulator” -c -j8 -serialize-diagnostics -Xcc “-I/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/swift-overrides.hmap” -Xcc -iquote -Xcc “/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/M2L4 Challenge-generated-files.hmap” -Xcc “-I/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/M2L4 Challenge-own-target-headers.hmap” -Xcc “-I/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/M2L4 Challenge-all-target-headers.hmap” -Xcc -iquote -Xcc “/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/M2L4 Challenge-project-headers.hmap” -Xcc “-I/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Products/Debug-iphonesimulator/include” -Xcc “-I/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/DerivedSources-normal/arm64” -Xcc “-I/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/DerivedSources/arm64” -Xcc “-I/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/DerivedSources” -Xcc -DDEBUG=1 -working-directory “/Users/jaimefernandes/Desktop/M2L4 Challenge” “/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/Objects-normal/arm64/ContentView.1.preview-thunk.swift” -o “/Users/jaimefernandes/Library/Developer/Xcode/DerivedData/M2L4_Challenge-glqjcvahswldgedcdfjjqqdsdutc/Build/Intermediates.noindex/Previews/M2L4 Challenge/Intermediates.noindex/M2L4 Challenge.build/Debug-iphonesimulator/M2L4 Challenge.build/Objects-normal/arm64/ContentView.1.preview-thunk.o” -module-name M2L4_Challenge_PreviewReplacement_ContentView_1 -Onone -Xfrontend -disable-modules-validate-system-headers -gline-tables-only