Updating NixOS - Revision history

Styx6198: Reference to NixOS manual and re-introduce nixos-rebuild switch --upgrade as a shortcut.

2025-11-17T21:20:11Z

Reference to NixOS manual and re-introduce nixos-rebuild switch --upgrade as a shortcut.

← Older revision		Revision as of 21:20, 17 November 2025
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	== For non-flake configurations ==		== For non-flake configurations ==

			What follows is a short set of instructions. Further details can be found in the [https://nixos.org/manual/nixos/stable/#sec-upgrading NixOS Manual.]

	=== Updating NixOS channels ===		=== Updating NixOS channels ===
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	</syntaxhighlight>To apply configuration changes and new package updates only '''after''' rebooting the system, use the following command instead:<syntaxhighlight lang="console">		</syntaxhighlight>To apply configuration changes and new package updates only '''after''' rebooting the system, use the following command instead:<syntaxhighlight lang="console">
	# nixos-rebuild boot		# nixos-rebuild boot
			</syntaxhighlight>

			=== Updating channel and rebuilding the system ===

			The below command is a shortcut equivalent to running '''nix-channel --update nixos; nixos-rebuild switch''' previously described:

			<syntaxhighlight lang="console">
			# nixos-rebuild switch --upgrade
	</syntaxhighlight>		</syntaxhighlight>

RockWolf: `

2025-07-15T18:34:16Z

← Older revision		Revision as of 18:34, 15 July 2025
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	=== Rebuilding the system after updating channels ===		=== Rebuilding the system after updating channels ===
	If you want to not only apply your configuration changes but also update the packages and system environment to the latest versions available from the Nixpkgs repository. This is typically used when you want to ensure you are using the latest versions of your software and system services:<syntaxhighlight lang="console">		If you want to not only apply your configuration changes but also update the packages and system environment to the latest versions available from the Nixpkgs repository. This is typically used when you want to ensure you are using the latest versions of your software and system services:<syntaxhighlight lang="console">
	# nixos-rebuild switch ~~--upgrade~~		# nixos-rebuild switch
	</syntaxhighlight>To apply configuration changes and new package updates only '''after''' rebooting the system, use the following command instead:<syntaxhighlight lang="console">		</syntaxhighlight>To apply configuration changes and new package updates only '''after''' rebooting the system, use the following command instead:<syntaxhighlight lang="console">
	# nixos-rebuild boot ~~--upgrade~~		# nixos-rebuild boot
	</syntaxhighlight>		</syntaxhighlight>

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	=== Example of a system update ===		=== Example of a system update ===
	<syntaxhighlight lang="console">		<syntaxhighlight lang="console">
	# nix-channel --update && nixos-rebuild switch ~~--upgrade~~ && reboot		# nix-channel --update && nixos-rebuild switch && reboot
	</syntaxhighlight>		</syntaxhighlight>

Pigs: link to channel branches

2025-06-12T17:39:50Z

link to channel branches

← Older revision		Revision as of 17:39, 12 June 2025
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	=== Updating NixOS channels ===		=== Updating NixOS channels ===

	<syntaxhighlight lang="console">		<syntaxhighlight lang="console">
	# nix-channel --update		# nix-channel --update
	</syntaxhighlight>		</syntaxhighlight>

			For more information on channels, see the main [[Channel branches]] page.

	=== Rebuilding the system after updating channels ===		=== Rebuilding the system after updating channels ===

Pigs: Add section on updating nixos if you are using flakes

2025-06-05T05:34:15Z

Add section on updating nixos if you are using flakes

@@ Line 9: / Line 9: @@
 </syntaxhighlight>
-== Updating channels and rebuilding the system ==
+== For non-flake configurations ==
 === Updating NixOS channels ===
@@ Line 36: / Line 36: @@
 </syntaxhighlight>
-== Limiting the maximum number of running jobs ==
+== For flake based configurations ==
 Sometimes, the update process may hang when the system CPU has a high number of cores. You can limit the maximum number of running jobs:
@@ Line 48: / Line 79: @@
 };
 </syntaxhighlight>
 [[Category:NixOS]]

Amateur de Pommes: follow commands template

2025-06-05T00:44:35Z

follow commands template

← Older revision		Revision as of 00:44, 5 June 2025
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	As part of this process, only repository channels are updated or removed during updates. The system '''requires an internet connection''' to download the latest changes, and users '''cannot''' directly modify the system. For optimal stability, security, and access to new features, regular updates — ideally '''once a week''' — are recommended.		As part of this process, only repository channels are updated or removed during updates. The system '''requires an internet connection''' to download the latest changes, and users '''cannot''' directly modify the system. For optimal stability, security, and access to new features, regular updates — ideally '''once a week''' — are recommended.

	~~All commands below are executed in a Terminal application (Shell: Bash).~~
	== Rebuilding the system after editing configuration.nix file ==		== Rebuilding the system after editing configuration.nix file ==
	~~If you want to~~ apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="~~bash~~">		To apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="console">
	~~sudo~~ nixos-rebuild switch		# nixos-rebuild switch
	</syntaxhighlight>		</syntaxhighlight>

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	=== Updating NixOS channels ===		=== Updating NixOS channels ===
	<syntaxhighlight lang="~~bash~~">		<syntaxhighlight lang="console">
	~~sudo~~ nix-channel --update		# nix-channel --update
	</syntaxhighlight>		</syntaxhighlight>

	=== Rebuilding the system after updating channels ===		=== Rebuilding the system after updating channels ===
	If you want to not only apply your configuration changes but also update the packages and system environment to the latest versions available from the Nixpkgs repository. This is typically used when you want to ensure you are using the latest versions of your software and system services:<syntaxhighlight lang="~~bash~~">		If you want to not only apply your configuration changes but also update the packages and system environment to the latest versions available from the Nixpkgs repository. This is typically used when you want to ensure you are using the latest versions of your software and system services:<syntaxhighlight lang="console">
	~~sudo~~ nixos-rebuild switch --upgrade		# nixos-rebuild switch --upgrade
	</syntaxhighlight>~~If you want to~~ apply configuration changes and new package updates after rebooting the system, use the following command instead:<syntaxhighlight lang="~~bash~~">		</syntaxhighlight>To apply configuration changes and new package updates only '''after''' rebooting the system, use the following command instead:<syntaxhighlight lang="console">
	~~sudo~~ nixos-rebuild boot --upgrade		# nixos-rebuild boot --upgrade
	</syntaxhighlight>		</syntaxhighlight>

	== Changing Nixpkgs version ==		=== Changing Nixpkgs version ===
	https://channels.nixos.org/		To see what is the latest channel available, see https://channels.nixos.org<syntaxhighlight lang="console"># nix-channel --add https://channels.nixos.org/nixos-<version> nixos</syntaxhighlight>

	== Deleting old generations ==		=== Deleting old generations ===
	<syntaxhighlight lang="~~bash~~">		<syntaxhighlight lang="console">
	~~sudo~~ nix-collect-garbage -d		# nix-collect-garbage -d
	</syntaxhighlight>		</syntaxhighlight>

	== ~~Summary: Automating~~ system ~~updating and deleting old generations~~ ==		=== Example of a system update ===
	<syntaxhighlight lang="~~bash~~">		<syntaxhighlight lang="console">
	~~sudo~~ nix-channel --update && ~~sudo~~ nixos-rebuild switch --upgrade && ~~sudo~~ reboot		# nix-channel --update && nixos-rebuild switch --upgrade && reboot
	</syntaxhighlight>		</syntaxhighlight>

	== Limiting the maximum number of running jobs ==		== Limiting the maximum number of running jobs ==
	Sometimes, the update process may hang when the system CPU has a high number of cores. You can limit the maximum number of running jobs.		Sometimes, the update process may hang when the system CPU has a high number of cores. You can limit the maximum number of running jobs:

	~~Command:~~<syntaxhighlight lang="~~bash~~">		<syntaxhighlight lang="console">
	~~sudo~~ nixos-rebuild switch --option max-jobs 8		# nixos-rebuild switch --option max-jobs 8
	</syntaxhighlight>configuration.nix<syntaxhighlight lang="nix">		</syntaxhighlight>To make the change permanent, add the following to your configuration.nix:<syntaxhighlight lang="nix">
	nix = {		nix = {
	settings = {		settings = {

Golbinex: Add information about nixos-rebuild boot a tip to fix a hang during update

2025-05-25T17:37:57Z

Add information about nixos-rebuild boot a tip to fix a hang during update

@@ Line 20: / Line 20: @@
 If you want to not only apply your configuration changes but also update the packages and system environment to the latest versions available from the Nixpkgs repository. This is typically used when you want to ensure you are using the latest versions of your software and system services:<syntaxhighlight lang="bash">
 sudo nixos-rebuild switch --upgrade
 </syntaxhighlight>
@@ Line 35: / Line 37: @@
 </syntaxhighlight>
 [[Category:NixOS]]

Roxwize: rm numbers

2025-05-12T23:06:05Z

rm numbers

← Older revision		Revision as of 23:06, 12 May 2025
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	== 1. Introduction ==		== Introduction ==
	[[NixOS]] stands out due to its declarative configuration and atomic updates, which ensure that system updates are predictable, reversible, and don’t risk breaking the setup. This approach guarantees consistency across versions, allowing any changes to be easily rolled back. NixOS also offers flexibility, multi-version support, and advanced dependency management, making it an excellent choice for developers and system administrators.		[[NixOS]] stands out due to its declarative configuration and atomic updates, which ensure that system updates are predictable, reversible, and don’t risk breaking the setup. This approach guarantees consistency across versions, allowing any changes to be easily rolled back. NixOS also offers flexibility, multi-version support, and advanced dependency management, making it an excellent choice for developers and system administrators.

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	All commands below are executed in a Terminal application (Shell: Bash).		All commands below are executed in a Terminal application (Shell: Bash).
	== 2. Rebuilding the system after editing configuration.nix file ==		== Rebuilding the system after editing configuration.nix file ==
	If you want to apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="bash">		If you want to apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="bash">
	sudo nixos-rebuild switch		sudo nixos-rebuild switch
	</syntaxhighlight>		</syntaxhighlight>

	== 3. Updating channels and rebuilding the system ==		== Updating channels and rebuilding the system ==

	=== ~~3.1~~ Updating NixOS channels ===		=== Updating NixOS channels ===
	<syntaxhighlight lang="bash">		<syntaxhighlight lang="bash">
	sudo nix-channel --update		sudo nix-channel --update
	</syntaxhighlight>		</syntaxhighlight>

	=== ~~3.2~~ Rebuilding the system after updating channels ===		=== Rebuilding the system after updating channels ===
	If you want to not only apply your configuration changes but also update the packages and system environment to the latest versions available from the Nixpkgs repository. This is typically used when you want to ensure you are using the latest versions of your software and system services:<syntaxhighlight lang="bash">		If you want to not only apply your configuration changes but also update the packages and system environment to the latest versions available from the Nixpkgs repository. This is typically used when you want to ensure you are using the latest versions of your software and system services:<syntaxhighlight lang="bash">
	sudo nixos-rebuild switch --upgrade		sudo nixos-rebuild switch --upgrade
	</syntaxhighlight>		</syntaxhighlight>

	== 4. Changing Nixpkgs version ==		== Changing Nixpkgs version ==
	https://channels.nixos.org/		https://channels.nixos.org/

	== 5. Deleting old generations ==		== Deleting old generations ==
	<syntaxhighlight lang="bash">		<syntaxhighlight lang="bash">
	sudo nix-collect-garbage -d		sudo nix-collect-garbage -d
	</syntaxhighlight>		</syntaxhighlight>

	== 6. Summary: Automating system updating and deleting old generations ==		== Summary: Automating system updating and deleting old generations ==
	<syntaxhighlight lang="bash">		<syntaxhighlight lang="bash">
	sudo nix-channel --update && sudo nixos-rebuild switch --upgrade && sudo reboot		sudo nix-channel --update && sudo nixos-rebuild switch --upgrade && sudo reboot

Klinger: Category:NixOS added

2025-03-20T14:25:39Z

Category:NixOS added

← Older revision		Revision as of 14:25, 20 March 2025
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	sudo nix-channel --update && sudo nixos-rebuild switch --upgrade && sudo reboot		sudo nix-channel --update && sudo nixos-rebuild switch --upgrade && sudo reboot
	</syntaxhighlight>		</syntaxhighlight>

			[[Category:NixOS]]

AveryKoen at 12:56, 3 February 2025

2025-02-03T12:56:46Z

← Older revision		Revision as of 12:56, 3 February 2025
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	As part of this process, only repository channels are updated or removed during updates. The system '''requires an internet connection''' to download the latest changes, and users '''cannot''' directly modify the system. For optimal stability, security, and access to new features, regular updates — ideally '''once a week''' — are recommended.		As part of this process, only repository channels are updated or removed during updates. The system '''requires an internet connection''' to download the latest changes, and users '''cannot''' directly modify the system. For optimal stability, security, and access to new features, regular updates — ideally '''once a week''' — are recommended.

	~~<!-- Important -->~~All commands below are executed in a Terminal application (Shell: Bash).		All commands below are executed in a Terminal application (Shell: Bash).
	== 2. Rebuilding the system after editing configuration.nix file ==		== 2. Rebuilding the system after editing configuration.nix file ==
	If you want to apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="bash">		If you want to apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="bash">

AveryKoen at 12:56, 3 February 2025

2025-02-03T12:56:28Z

← Older revision		Revision as of 12:56, 3 February 2025
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	<!-- Important -->All commands below are executed in a Terminal application (Shell: Bash).		<!-- Important -->All commands below are executed in a Terminal application (Shell: Bash).

	== 2. Rebuilding the system after editing configuration.nix file ==		== 2. Rebuilding the system after editing configuration.nix file ==
	If you want to apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="bash">		If you want to apply the configuration changes made in <code>/etc/nixos/configuration.nix</code> without updating the channels, [[Nixpkgs]] and package versions. This is typically used when you've edited the system configuration, and you just want to apply those changes:<syntaxhighlight lang="bash">