xcodebuild is broken with fink-bld home directory on macOS 14 / Xcode 15

[dhomeier]

On Sonoma 14.2.1 with Xcode 15.1 builds calling xcodebuild fail because it is trying to create stuff in the fink-bld user's Directory Services NFSHomeDirectory, which is /var/empty, rather than the $HOME set up by Fink.
There are various defaults in showBuildSettings using this, all of which afaics can be pointed to Fink's $HOME by setting 3 variables, but xcodebuild then still tries to create cache and log directories, the location of which I have not found any settings to control (for building launch below):

/usr/bin/xcodebuild -UsePerConfigurationBuildLocations=NO SYMROOT=. OBJROOT=. HOME=$HOME MODULE_CACHE_DIR=${HOME}/Library/Developer/Xcode/DerivedData/ModuleCache.noindex SHARED_PRECOMPS_DIR=${HOME}/Library/Developer/Xcode/DerivedData/PrecompiledHeaders
2024-01-06 01:06:24.395 xcodebuild[96395:26968448] [MT] DVTDownloadable: Error creating downloadable cache directory file:///var/empty/Library/Caches/com.apple.dt.Xcode/Downloads/
Command line invocation:
    /Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -UsePerConfigurationBuildLocations=NO SYMROOT=. OBJROOT=. HOME=/tmp/fink-build-HOME.o1Oo_jWsBi MODULE_CACHE_DIR=/tmp/fink-build-HOME.o1Oo_jWsBi/Library/Developer/Xcode/DerivedData/ModuleCache.noindex SHARED_PRECOMPS_DIR=/tmp/fink-build-HOME.o1Oo_jWsBi/Library/Developer/Xcode/DerivedData/PrecompiledHeaders

User defaults from command line:
    IDEPackageSupportUseBuiltinSCM = YES
    UsePerConfigurationBuildLocations = NO

Build settings from command line:
    HOME = /tmp/fink-build-HOME.o1Oo_jWsBi
    MODULE_CACHE_DIR = /tmp/fink-build-HOME.o1Oo_jWsBi/Library/Developer/Xcode/DerivedData/ModuleCache.noindex
    OBJROOT = .
    SHARED_PRECOMPS_DIR = /tmp/fink-build-HOME.o1Oo_jWsBi/Library/Developer/Xcode/DerivedData/PrecompiledHeaders
    SYMROOT = .

2024-01-06 01:06:24.456 xcodebuild[96395:26968449] Error Domain=com.apple.CoreSimulator.SimError Code=400 "Unable to determine SimDeviceSet for subscriptions, s
et_path=/var/empty/Library/Developer/CoreSimulator/Devices" UserInfo={NSLocalizedDescription=Unable to determine SimDeviceSet for subscriptions, set_path=/var/e
mpty/Library/Developer/CoreSimulator/Devices, NSUnderlyingError=0x600000e46d90 {Error Domain=NSPOSIXErrorDomain Code=12 "Cannot allocate memory" UserInfo={NSLocalizedFailureReason=Allocation or initialization failed., NSLocalizedDescription=Failed to initialize simulator device set.}}}
2024-01-06 01:06:24.457 xcodebuild[96395:26968449]  iOSSimulator: [SimServiceContext defaultDeviceSetWithError:] returned nil (Error Domain=com.apple.CoreSimulator.SimError Code=400 "Failed to initialize simulator device set." UserInfo={NSLocalizedFailureReason=Failed to subscribe to notifications from CoreSimulatorService., NSLocalizedDescription=Failed to initialize simulator device set., NSUnderlyingError=0x600000e46e20 {Error Domain=com.apple.CoreSimulator.SimError Code=400 "Unable to determine SimDeviceSet for subscriptions, set_path=/var/empty/Library/Developer/CoreSimulator/Devices" UserInfo={NSLocalizedDescription=Unable to determine SimDeviceSet for subscriptions, set_path=/var/empty/Library/Developer/CoreSimulator/Devices, NSUnderlyingError=0x600000e46d90 {Error Domain=NSPOSIXErrorDomain Code=12 "Cannot allocate memory" UserInfo={NSLocalizedFailureReason=Allocation or initialization failed., NSLocalizedDescription=Failed to initialize simulator device set.}}}}}). Simulator device support disabled.
2024-01-06 01:06:24.472 xcodebuild[96395:26968448] [MT] IDELogStore: Failed to open log store at /var/empty/Library/Developer/Xcode/DerivedData/launch-ehjqpeknmgsahvbptwsevkqbqpyf/Logs/Build
2024-01-06 01:06:24.473 xcodebuild[96395:26968448] [MT] IDELogStore: Failed to open Build log store: Error Domain=IDEFoundationErrorDomain Code=1 "Unable to create log store directory at '/var/empty/Library/Developer/Xcode/DerivedData/launch-ehjqpeknmgsahvbptwsevkqbqpyf/Logs/Build': (513) You don?<80><99>t have permission to save the file ?<80><9C>Build?<80><9D> in the folder ?<80><9C>Logs?<80><9D>." UserInfo={NSLocalizedDescription=Unable to create log store directory at '/var/empty/Library/Developer/Xcode/DerivedData/launch-ehjqpeknmgsahvbptwsevkqbqpyf/Logs/Build': (513) You don?<80><99>t have permission to save the file ?<80><9C>Build?<80><9D> in the folder ?<80><9C>Logs?<80><9D>.}. User info: {
    NSLocalizedDescription = "Unable to create log store directory at '/var/empty/Library/Developer/Xcode/DerivedData/launch-ehjqpeknmgsahvbptwsevkqbqpyf/Logs/Build': (513) You don\U2019t have permission to save the file \U201cBuild\U201d in the folder \U201cLogs\U201d.";
}.
2024-01-06 01:06:24.476 xcodebuild[96395:26968478] NetworkStorageDB:_openDBReadConnections: failed to open read connection to DB @ /var/empty/Library/Caches/com.apple.dt.xcodebuild/Cache.db.  Error=14. Cause=unable to open database file

and so on...

[dmacks]

Thanks for the centralized report on the underlying general bug! Possible lead (I didn't know MacPorts now uses a similar game to our fink-bld sandbox): https://trac.macports.org/ticket/57137

[dhomeier]

That seems to be a different and older issue, but setting derivedDataPath is in fact already implemented in our aquaterm, and it builds. Setting the same options in launch it builds, too!
The other 2 packages I found using xcodebuild, osxfuse and telnet still fail on other build errors; possibly those projects are too far behind any recent Xcode version.