Impermanence - Revision history

Malix: /* Example */ comment placement

2025-09-14T17:33:10Z

Example: comment placement

← Older revision		Revision as of 17:33, 14 September 2025
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	};		};

			# KDE Plasma has a lot of config files which are all put directly in `~/.config` instead of dedicated directories; for this reason, each needs to be linked individually
	# We can separate KDE Plasma from the other dotfiles above to avoid having to prefix each entries with `"Plasma/"`		# We can separate KDE Plasma from the other dotfiles above to avoid having to prefix each entries with `"Plasma/"`
	home.persistence."/nix/dotfiles/Plasma" = {		home.persistence."/nix/dotfiles/Plasma" = {
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	allowOther = true;		allowOther = true;

	~~# KDE Plasma has a lot of config files which are all put directly in `~/.config` instead of dedicated directories; for this reason, each needs to be linked individually~~
	directories = [		directories = [
	".config/gtk-3.0" # fuse mounted from /nix/dotfiles/Plasma/.config/gtk-3.0		".config/gtk-3.0" # fuse mounted from /nix/dotfiles/Plasma/.config/gtk-3.0

Malix: general enhancements

2025-09-14T17:30:11Z

general enhancements

Show changes

Crasm: Warn about impermanence overriding config.users ownership and permissions

2025-06-14T19:13:48Z

Warn about impermanence overriding config.users ownership and permissions

← Older revision		Revision as of 19:13, 14 June 2025
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	{{warning\|When setting up impermanence, make sure that you have declared password for your user to be able to log-in after the deployment as for example the nixos installer declares passwords imperatively.}}		{{warning\|When setting up impermanence, make sure that you have declared password for your user to be able to log-in after the deployment as for example the nixos installer declares passwords imperatively.}}
			{{warning\|The permissions and user/group ownership of your persisted directories overrides values configured in <code>config.users.*</code>, potentially including your home directories.}}

	Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD.		Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD.

Pigs: Add category nixos and configuration

2025-05-18T17:53:17Z

Add category nixos and configuration

← Older revision		Revision as of 17:53, 18 May 2025
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	https://web.archive.org/web/20241007130142/https://mt-caret.github.io/blog/posts/2020-06-29-optin-state.html - Encypted Btrfs Root with Opt-in State on NixOS. Uses Btrfs instead of tmpfs or ZFS.		https://web.archive.org/web/20241007130142/https://mt-caret.github.io/blog/posts/2020-06-29-optin-state.html - Encypted Btrfs Root with Opt-in State on NixOS. Uses Btrfs instead of tmpfs or ZFS.

			[[Category:Configuration]]
			[[Category:NixOS]]

Danjl1100: add systemd timers folder for allowing Persistent= timers to last across boots

2025-04-06T22:07:06Z

add systemd timers folder for allowing Persistent= timers to last across boots

← Older revision		Revision as of 22:07, 6 April 2025
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	"/var/lib/nixos"		"/var/lib/nixos"
	"/var/lib/systemd/coredump"		"/var/lib/systemd/coredump"
			"/var/lib/systemd/timers"
	"/etc/NetworkManager/system-connections"		"/etc/NetworkManager/system-connections"
	{ directory = "/var/lib/colord"; user = "colord"; group = "colord"; mode = "u=rwx,g=rx,o="; }		{ directory = "/var/lib/colord"; user = "colord"; group = "colord"; mode = "u=rwx,g=rx,o="; }

Phanirithvij: 404 wayback, also check https://github.com/mt-caret/blog/issues/4

2024-11-22T19:30:45Z

404 wayback, also check https://github.com/mt-caret/blog/issues/4

← Older revision		Revision as of 19:30, 22 November 2024
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	[https://grahamc.com/blog/erase-your-darlings https://grahamc.com/blog/erase-your-darlings] - Explaining why you might want to do this. Uses ZFS snapshots instead of tmpfs.		[https://grahamc.com/blog/erase-your-darlings https://grahamc.com/blog/erase-your-darlings] - Explaining why you might want to do this. Uses ZFS snapshots instead of tmpfs.

	https://mt-caret.github.io/blog/posts/2020-06-29-optin-state.html - Encypted Btrfs Root with Opt-in State on NixOS. Uses Btrfs instead of tmpfs or ZFS.		https://web.archive.org/web/20241007130142/https://mt-caret.github.io/blog/posts/2020-06-29-optin-state.html - Encypted Btrfs Root with Opt-in State on NixOS. Uses Btrfs instead of tmpfs or ZFS.

Nani8ot: Added a link to a blog post about how to set up impermanence with Btrfs.

2024-10-12T02:04:13Z

Added a link to a blog post about how to set up impermanence with Btrfs.

← Older revision		Revision as of 02:04, 12 October 2024
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	[https://grahamc.com/blog/erase-your-darlings https://grahamc.com/blog/erase-your-darlings] - Explaining why you might want to do this. Uses ZFS snapshots instead of tmpfs.		[https://grahamc.com/blog/erase-your-darlings https://grahamc.com/blog/erase-your-darlings] - Explaining why you might want to do this. Uses ZFS snapshots instead of tmpfs.

			https://mt-caret.github.io/blog/posts/2020-06-29-optin-state.html - Encypted Btrfs Root with Opt-in State on NixOS. Uses Btrfs instead of tmpfs or ZFS.

imported>KREYREN: Add warning about being able to log in

2023-12-01T06:31:40Z

Add warning about being able to log in

← Older revision		Revision as of 06:31, 1 December 2023
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			{{warning\|When setting up impermanence, make sure that you have declared password for your user to be able to log-in after the deployment as for example the nixos installer declares passwords imperatively.}}

	Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD.		Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD.

imported>KREYREN: Persisting - Update the example

2023-12-01T06:24:20Z

Persisting - Update the example

← Older revision		Revision as of 06:24, 1 December 2023
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	imports = [ "${impermanence}/nixos.nix" ];		imports = [ "${impermanence}/nixos.nix" ];

	~~# this folder is where the files will be stored (don't put it in tmpfs)~~		environment.persistence."/nix/persist/system" = {
	environment.persistence."/nix/persist/system" = {		hideMounts = true;
	directories = [		directories = [
	~~"/etc/nixos" # bind mounted from /nix/persist/system/etc/nixos to /etc/nixos~~
	~~"/etc/NetworkManager"~~
	"/var/log"		"/var/log"
	"/var/lib"		"/var/lib/bluetooth"
			"/var/lib/nixos"
			"/var/lib/systemd/coredump"
			"/etc/NetworkManager/system-connections"
			{ directory = "/var/lib/colord"; user = "colord"; group = "colord"; mode = "u=rwx,g=rx,o="; }
	];		];
	files = [		files = [
	~~# NOTE: if you persist /var/log directory, you should persist /etc/machine-id as well~~		"/etc/machine-id"
	~~# otherwise it will affect disk usage of log service~~		{ file = "/etc/nix/id_rsa"; parentDirectory = { mode = "u=rwx,g=,o="; }; }
	# "/etc/machine-id"
	"/etc/nix/id_rsa"
	];		];
	};		};

	}		}
	</syntaxhighlight>		</syntaxhighlight>


	=== Home Managing ===		=== Home Managing ===

imported>KREYREN: Add missing dash

2023-12-01T06:22:40Z

Add missing dash

← Older revision		Revision as of 06:22, 1 December 2023
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	Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD.		Impermanence in NixOS is where your root directory gets wiped every reboot (such as by mounting a tmpfs to /). Such a setup is possible because NixOS only needs <code>/boot</code> and <code>/nix</code> in order to boot, all other system files are simply links to files in <code>/nix</code>. <code>/boot</code> and <code>/nix</code> still need to be stored on a hard drive or SSD.

	Example <code>~~hardwareconfiguration~~.nix</code> settings:		Example <code>hardware-configuration.nix</code> settings:
	<syntaxhighlight lang="nix">		<syntaxhighlight lang="nix">
	fileSystems."/" =		fileSystems."/" =