When comparing NixOS vs Chakra, the Slant community recommends NixOS for most people. In the question“What are the best Linux distributions for desktops?” NixOS is ranked 19th while Chakra is ranked 77th. The most important reason people chose NixOS is:
Atomic non-destructive upgrades / rollback of a system upgrade / declarative reproducible system configuration / unprivileged installation of packages / transparent source or binary deployment.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro State of the art package manager
Atomic non-destructive upgrades / rollback of a system upgrade / declarative reproducible system configuration / unprivileged installation of packages / transparent source or binary deployment.
Pro Minimal
You can start with a minimal environment and add packages and software to suit your needs as you go along.
Pro Reproducible system
NixOS is configured using the Nix package manager, allowing your system to be replicated and kept in sync across multiple machines. Great for keeping a laptop and desktop in sync.
Pro Robust
Packages don't break after a NixOS upgrade as they are prone to with other distros (especially Arch).
Pro Focuses on KDE/Qt Apps
comes with none GTK apps per default
Pro Independent from Arch
its not just another Arch Spin-off
Pro Keeps Gnome apps tidier even than Gnome distros
Cons
Con Documentation is not good
A lot of the documentation of various functions is buried on the source code, their respective manuals, or non-existent. The documentation, the conventions, and the scattered toolchain really made searching for stuff easily missable.
Con A configuration change might end up bricking your system
Con Weak base
Sometimes updates will not execute hooks(full update always misses to run mkinitcpio) so you get an unbootable system.
Con Small development team
The team is very small
Con No real installer
Has no installer just a big bloated LiveCD that gets unpacked to your disk.
Con Pacman
Compared to deb or rpm it takes ages to update the system, it's also very dumb in dependency tracking.
Con Unreliable Servers
The CCR or the community forums are often down or unreachable.
Con Overwrites your default EFI config
It overwrites your default EFI config wich can make you PC unbootable if something goes wrong.
Con Uses systemd
Which is very hard to debug and not a *nix standard.
Con Only available for x86-based CPUs
Con Wont let you install the system to USB drives
Chakras weak installer Calamares does not allow you to install it to a USB drive.
Con Weak update process to a recent release
For example, you can install the Goedel Release and update it to the current release which then fails to boot due to some systemd-errors.