lubuntu kinetic (install using existing partition) failure (again)

lubuntu kinetic install to dell optiplex 755
re-use / & /home (no format)

package failure?

this was last run on 12th October successfully (ISO 2022-10-11) so unexpected... but did I add packages or something post-install that has lead to this failure?? if so what???

my aim is to explore this shortly; I'm still not yet convinced we have a problem yet; I'll try next on a different box with a cleaner setup (ie. known config)

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: calamares 3.3.0-alpha2-0ubuntu2
ProcVersionSignature: Ubuntu 5.19.0-21.21-generic 5.19.7
Uname: Linux 5.19.0-21-generic x86_64
.etc.calamares.modules.after_bootloader_context.conf:
 ---
 dontChroot: false
 timeout: 120
 firmwareType:
     "*": "-rm ${ROOT}/home/${USER}/Desktop/lubuntu-calamares.desktop"
.etc.calamares.modules.finished.conf:
 ---
 restartNowMode: user-checked
 restartNowCommand: "systemctl -i reboot"
.etc.calamares.modules.fstab.conf:
 crypttabOptions: luks,keyscript=/bin/cat
 efiMountOptions: umask=0077
.etc.calamares.modules.shellprocess_logs.conf:
 ---
 dontChroot: true
 timeout: 30
 script:
     - calamares-logs-helper ${ROOT}
.etc.calamares.modules.unpackfs.conf:
 ---
 unpack:
     - source: "/cdrom/casper/filesystem.squashfs"
         sourcefs: "squashfs"
         destination: ""
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.475
CurrentDesktop: LXQt
Date: Wed Oct 19 22:27:11 2022
LiveMediaBuild: Lubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221017.1)
RelatedPackageVersions:
 calamares-settings-ubuntu-common 1:22.10.12
 calamares-settings-lubuntu 1:22.10.12
 xfsprogs 5.16.0-1ubuntu1
 btrfs-progs 5.19-1
SourcePackage: calamares
UpgradeStatus: No upgrade log present (probably fresh install)