CPack DragNDrop generator fails on macOS 11
CPack Verbose: Analyzing app='/Users/runner/work/mixxx/mixxx/cmake_build/_CPack_Packages/Darwin/DragNDrop/Mixxx-HEAD-r1-3a2668c/Mixxx.app'
CPack Verbose: bundle='/Users/runner/work/mixxx/mixxx/cmake_build/_CPack_Packages/Darwin/DragNDrop/Mixxx-HEAD-r1-3a2668c/Mixxx.app'
CPack Verbose: executable='/Users/runner/work/mixxx/mixxx/cmake_build/_CPack_Packages/Darwin/DragNDrop/Mixxx-HEAD-r1-3a2668c/Mixxx.app/Contents/MacOS/mixxx'
CPack Verbose: valid='1'
CPack Verbose: executable file 1: /Users/runner/work/mixxx/mixxx/cmake_build/_CPack_Packages/Darwin/DragNDrop/Mixxx-HEAD-r1-3a2668c/Mixxx.app/Contents/MacOS/mixxx
CPack Verbose: verified='1'
CPack Verbose: info='Verified 1 executable files in '/Users/runner/work/mixxx/mixxx/cmake_build/_CPack_Packages/Darwin/DragNDrop/Mixxx-HEAD-r1-3a2668c/Mixxx.app''
CPack Verbose:
CPack Verbose: verified='1'
CPack Verbose: info=''
CPack Verbose:
CPack Verbose: fixup_bundle: done
CPack Verbose: Not signing bundle. Specify -DAPPLE_CODESIGN_IDENTITY and -DAPPLE_CODESIGN_ENTITLEMENTS to cmake before running cpack to sign
CPack: Create package
CPack Verbose: Package files to: /Users/runner/work/mixxx/mixxx/cmake_build/_CPack_Packages/Darwin/DragNDrop/Mixxx-HEAD-r1-3a2668c.dmg
CPack Error: Error executing: /usr/bin/hdiutil unflatten "/Users/runner/work/mixxx/mixxx/cmake_build/_CPack_Packages/Darwin/DragNDrop/temp-udzo.dmg"
CPack Error: Error unflattening dmg for adding SLA.
hdiutil: unflatten: verb not recognized
Usage: /usr/bin/hdiutil <verb> <options>
<verb> is one of the following:
help
attach
detach
eject
verify
create
compact
convert
burn
info
checksum
chpass
erasekeys
imageinfo
isencrypted
makehybrid
mount
mountvol
unmount
plugins
resize
segment
pmap
udifderez
udifrez
CPack Error: Problem compressing the directory
CPack Error: Error when generating package: mixxx
Error: Process completed with exit code 1.