Hello. Does installation with Calamares using **Manual** Partitioning, actually work, pls?
Encrypted *Auto*-installation [in a different, single-boot single-SSD, pc] works fine, but so far i have a 100% failure rate [12+ attempts] when i do manual partitioning in Calamares on my main pc. This error always results [once the installer is ~ >70% complete, ie, what i mean is that this failure does not happen immediately, but instead several minutes elapse during which all seems to be proceeding well]:
```
The package manager could not make changes to the installed system. The command <pre>apt-get --purge -q -y remove sparky-backup-* live-* calamares</pre> returned error code 100.
```
Manual partitioning is essential for this installation, as it is an existing triple-boot [one older distro now removed to make room for this new installation] with ArchLinux controlling the bootloader, & with three SSDs in it... some of whose partitions i need Sparky to mount.
I have tried various combos of partition arrangements, & varied the destination also for the new system to go, but all attempts lead to the same failure message. I have tried no boot partition, my existing Arch boot partition, a new 300MiB boot-efi partition specially for this installation... i have tried assigning a bootloader & not assigning one [using instead Arch's one]... all attempts fail with the identical error. I have not tried not encrypting the putative Sparky partition, because even if that were to work, it would be useless... i require it encrypted.
The ISO is `sparkylinux-2026.03-x86_64-kde.iso`. It passes its hashsum check. I have tried it on two different USB sticks.
Does anyone have any advice pls?