UPDATE as of 02/10/2026
DeepinVMS31J26.qcow2 created on 01/31/26 scp'd to remote host
root@cachyos-WDS8664 images]# ls -l
total 129017284
-rw------- 1 boris boris 118129885184 Feb 10 18:46 DeepinVMS31J26.qcow2
-rw------- 1 root root 80543154176 Feb 10 14:05 VMCachyOS02FB26.qcow2
VM deployed on remote host via scp'd qcow2 image been created on 01/31/26
Another CachyOS Kernel build succeeded on Deepin 25.010
END UPDATE
UPDATE as of 02/07/2026
Immutable Deepin 25.010 currently doesn't allow me to run `sudo apt update` , no matter which commands Google's AI Assistant suggests. For example:
$ sudo deepin-immutable-writable enable && sudo reboot ;
$ sudo deepin-immutable-ctl admin exec apt update ;
It doesn't work for me.
Google's AI Assistant suggested about five versions of directives similar to $ sudo deepin-immutable-writable enable, only $ sudo deepin-immutable-ctl --help works, but it doesn't help much .
At the time of publication of "Stress test Deepin 25.010 via build CachyOS Kernel 6.18.7 (VENV)" (01/25/26) https://lxer.com/module/newswire/view/361476/index.html ,there were no problems with `sudo apt update` at all.
END UPDATE
Because Deepin is Debian-based, we would use the linux-cachyos-deb tool provided by the community to generate compatible .deb files. See for instance https://itsfoss.com/news/cachyos-kernel-builder/
Notice also that current Deepin's modules names and dependencies appear to be the same as on Debian 13.3 at least during attempt to setup KVM Hypervisor, Libvirtd service and related tools as virt-manager. Cockpit Console setup also works on Deepin pretty smoothly exactly the same way as on Debian.
Directory /persistent mounted on device /dev/vda5 should be created large enough at least 50 GB. It's name during installation phase is "Data" storage and /var/lib/libvirt/images appears to be located on /dev/vda5
Start with Pre-installation step
$ sudo apt install build-essential
$ sudo apt install bpftool
and include /usr/sbin in system $PATH variable.
$ sudo apt install libdw-dev
Proceed with cloning https://github.com/Nitrux/linux-cachyos-deb
$ git clone https://github.com/Nitrux/linux-cachyos-deb
$ cd linux-cachyos-deb
Script installs all required packages and pops up TUI dialog to configure kernel 6.18.7 and finally proceed with building of debian kernel packages. Proceed with CachyOS Kernel configuration in the same way as it was done in https://lxer.com/module/newswire/view/357231/index.html
$ ./cachy-kernel-deb
Upon build completition
boris@boris-VMSDeepin:~/linux-cachyos-deb$ rm -fr linux-6.18.7
boris@boris-VMSDeepin:~/linux-cachyos-deb$ ls -l
total 1613884
-rwxrwxr-x 1 boris boris 34200 Jan 25 09:57 cachy-kernel-deb
-rwxrwxr-x 1 boris boris 155 Jan 25 10:50 install.sh
-rw-rw-r-- 1 boris boris 1536 Jan 25 09:57 LICENSE
-rw-rw-r-- 1 boris boris 154327332 Jan 23 13:33 linux-6.18.7.tar.xz
-rw-r--r-- 1 boris boris 9581112 Jan 25 10:41 linux-headers-6.18.7_6.18.7-1_amd64.deb
-rw-r--r-- 1 boris boris 182415084 Jan 25 10:42 linux-image-6.18.7_6.18.7-1_amd64.deb
-rw-r--r-- 1 boris boris 1304750360 Jan 25 10:48 linux-image-6.18.7-dbg_6.18.7-1_amd64.deb
-rw-r--r-- 1 boris boris 1464980 Jan 25 10:41 linux-libc-dev_6.18.7-1_amd64.deb
-rw-rw-r-- 1 boris boris 7567 Jan 25 10:48 linux-upstream_6.18.7-1_amd64.buildinfo
-rw-rw-r-- 1 boris boris 2208 Jan 25 10:49 linux-upstream_6.18.7-1_amd64.changes
-rw-rw-r-- 1 boris boris 3466 Jan 25 09:57 README.md
boris@boris-VMSDeepin:~/linux-cachyos-deb$ cat install.sh
sudo dpkg -i linux-headers-6.18.7_6.18.7-1_amd64.deb \
linux-image-6.18.7_6.18.7-1_amd64.deb \
linux-libc-dev_6.18.7-1_amd64.deb
$ ./install.sh
$ sudo grub-mkconfig -o /boot/grub/grub.cfg
$ sudo reboot
Setup KVM and Cockpit Web Console on Deepin 25.010
==========================================
$ sudo apt install qemu-kvm libvirt-daemon-system \
libvirt-clients bridge-utils virtinst virt-manager -y
$ sudo adduser $USER libvirt
$ sudo adduser $USER kvm
$ sudo systemctl enable libvirtd
$ sudo reboot
sudo virsh --connect qemu:///system
# version
# net-start default
# net-autostart default
^D
$ sudo reboot
$ sudo apt install cockpit cockpit-machines
$ sudo systemctl enable --now cockpit.socket
Enable linuix bridge bridge0 via Cockpit Web Console
$ sudo apt update
Work around to run dist-upgade and avoid upgrading package
linux-libc-dev on Deepin 25.0.10 which was automatically
downgraded during CahyOS Kernel 6.18.7 setup
$ sudo apt-mark hold linux-libc-dev
$ sudo apt dist-upgrade
$ sudo reboot
===========================================
Deploy any KVM Guest and verify /var/lib/libvirt/images location
===========================================
boris@boris-VMSDeepin:/var/lib/libvirt/images$ sudo su -
[sudo] password for boris:
Verification successful
root@boris-VMSDeepin:~# cd /var/lib/libvirt/images/
root@boris-VMSDeepin:/var/lib/libvirt/images# ls -l
total 8346644
-rw------- 1 root root 32217432064 Jan 25 15:23 ArchCosmicVM.qcow2
root@boris-VMSDeepin:/var/lib/libvirt/images# df -h .
Filesystem Size Used Avail Use% Mounted on
/dev/vda5 70G 22G 46G 32% /var
root@boris-VMSDeepin:/var/lib/libvirt/images# df -Th
Filesystem Type Size Used Avail Use% Mounted on
udev devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs tmpfs 1.6G 4.6M 1.6G 1% /run
/dev/vda4 ext4 23G 6.8G 15G 32% /
/dev/vda5 ext4 70G 22G 46G 32% /persistent
usr-overlay overlay 70G 22G 46G 32% /usr
opt-overlay overlay 70G 22G 46G 32% /opt
etc-overlay overlay 70G 22G 46G 32% /etc
tmpfs tmpfs 7.6G 0 7.6G 0% /dev/shm
tmpfs tmpfs 5.0M 8.0K 5.0M 1% /run/lock
efivarfs efivarfs 256K 39K 213K 16% /sys/firmware/efi/efivars
tmpfs tmpfs 7.6G 32K 7.6G 1% /tmp
/dev/vda2 ext4 3.9G 802M 2.9G 22% /boot
/dev/vda1 vfat 296M 12M 285M 4% /boot/efi
tmpfs tmpfs 1.6G 160K 1.6G 1% /run/user/1000
UPDATE as of 01/30/2026
====================================================
Worst case scenario to avoid upgrading linux-libc-dev on Deepin 25.0
====================================================
Work around to run dist-upgade and avoid upgrading package
linux-libc-dev on Deepin 25.0 which was automatically
downgraded during CahyOS Kernel 6.18.7 setup
====================================================
$ sudo apt-mark hold linux-libc-dev
sh: 1: /var/lib/lastore/scripts/build_system_info: Exec format error
====================================================
boris@boris-vmdevz:~$ file /var/lib/lastore/scripts/build_system_info
/var/lib/lastore/scripts/build_system_info: data
Reinstall lastore-daemon
root@boris-vmdevz:/var/lib/lastore/scripts# cd
===================================================
root@boris-vmdevz:~# apt install --reinstall lastore-daemon
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 1 not upgraded.
Need to get 9,829 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 https://community-packages.deepin.com/beige crimson/main amd64 lastore-daemon amd64 6.2.40 [9,829 kB]
Fetched 9,829 kB in 10s (953 kB/s)
(Reading database ... 192952 files and directories currently installed.)
Preparing to unpack .../lastore-daemon_6.2.40_amd64.deb ...
Unpacking lastore-daemon (6.2.40) over (6.2.40) ...
Setting up lastore-daemon (6.2.40) ...
Processing triggers for man-db (2.12.0-1) ...
Processing triggers for dbus (1.14.10-3-1deepin3) ...
Processing triggers for dde-dconfig-daemon (1.0.37.1) ...
Configuration trigger detected, reload completed successfully
root@boris-vmdevz:~# systemctl restart lastore-daemon
root@boris-vmdevz:~# apt update
Hit:1 https://community-packages.deepin.com/beige crimson InRelease
Hit:2 https://community-packages.deepin.com/driver-25 snipe InRelease
Hit:3 https://app-store-files.uniontech.com/260130171705986/appstorev23 crimson InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
1 package can be upgraded. Run 'apt list --upgradable' to see it.
root@boris-vmdevz:~# apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
linux-libc-dev
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
W: Please use `apt dist-upgrade' to upgrade your system. Using `apt upgrade' may result in incomplete upgrades.
root@boris-vmdevz:~# apt dist-upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
linux-libc-dev
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
root@boris-vmdevz:~#
logout
boris@boris-vmdevz:~$ sudo apt update
Hit:1 https://community-packages.deepin.com/beige crimson InRelease
Hit:2 https://community-packages.deepin.com/driver-25 snipe InRelease
Hit:3 https://app-store-files.uniontech.com/260130171705986/appstorev23 crimson InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
END UPDATE
