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NixOS 21.05 (Okapi)

Now I use, as I mentioned before (LINK) the best OS in the world - NixOS.
From NixOS there was now - as every year - an update to version 21.05 (Okapi)

What is new


Core:
- gcc 9.3.0 -> 10.3.0
- glibc 2.30 -> 2.32
- default linux 5.4 -> 5.10
- mesa 20.1.7 -> 21.0.1

Desktops:
- gnome 3.36 -> 40
- plasma5 5.18.5 -> 5.21.3
- kdaApplications 20.08.1 -> 20.12.3
- cinnamon 4.6 -> 4.8.1

Programming Languages and Frameworks:
- "Python optimizations have been disabled because builds are not reproducible. But they can be activated manually.

The whole changelog: LINK


UPGRADE

Very important - make a backup before performing the upgrade!
To upgrade NixOS you have to do the following.
First, you should check which channel uses:


CHANNEL
nix-channel --list | grep nixos

After that, the new 21.05 channel is added:

ADD CHANNEL
nix-channel --add https://nixos.org/channels/nixos-21.05 nixos

And last but not least, the actual upgrade via:

UPGRADE
nixos-rebuild switch --upgrade

YEAH! - NixOS 21.05 - the best OS in the world!






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