Ca-derivations - Revision history

Erethon: The NGI0 Cache doesn't exist since at least summer of 2024

2025-09-18T17:42:47Z

The NGI0 Cache doesn't exist since at least summer of 2024

← Older revision		Revision as of 17:42, 18 September 2025
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	It is also possible to mark all the derivations as content-addressed by default, by passing <code>config.contentAddressedByDefault = true</code> as argument to nixpkgs.		It is also possible to mark all the derivations as content-addressed by default, by passing <code>config.contentAddressedByDefault = true</code> as argument to nixpkgs.

	Be warned that although there’s a [https://hydra.ngi0.nixos.org/jobset/ca-test/nixpkgs hydra instance testing ''some stuff''], it’s not a channel blocker, and [https://cache.ngi0.nixos.org its associated binary cache] won’t contain nearly as many things as <code>cache.nixos.org</code>. So doing so will probably entail rebuilding most of your system yourself, and you ''might'' encounter some unexpected breakages.

	~~To use the binary cache <code>cache.ngi0.nixos.org</code> to speed up your builds, merge the following into your <code>nix.conf</code>:~~

	~~<pre>substituters = https://cache.ngi0.nixos.org/~~
	~~trusted-public-keys = cache.ngi0.nixos.org-1:KqH5CBLNSyX184S9BKZJo1LxrxJ9ltnY2uAs5c/f1MA=</pre>~~
	== Ensuring that a derivation is properly content-addressed ==		== Ensuring that a derivation is properly content-addressed ==

2025-08-13T19:35:55Z

Using CA derivations: It is very different and needs to be opt-in, certainly at the Nix level, probably also at the Nixpkgs level

← Older revision		Revision as of 19:35, 13 August 2025
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	== Using CA derivations ==		== Using CA derivations ==

	The feature is ~~currently~~ opt-in, meaning that each derivation must individually be marked as content-addressed. When using <code>nixpkgs-unstable</code>, this can be done by setting <code>__contentAddressed = true</code> in the call to mkDerivation.		The feature is opt-in, meaning that each derivation must individually be marked as content-addressed. When using <code>nixpkgs-unstable</code>, this can be done by setting <code>__contentAddressed = true</code> in the call to mkDerivation.

	It is also possible to mark all the derivations as content-addressed by default, by passing <code>config.contentAddressedByDefault = true</code> as argument to nixpkgs.		It is also possible to mark all the derivations as content-addressed by default, by passing <code>config.contentAddressedByDefault = true</code> as argument to nixpkgs.

2025-02-23T12:41:12Z

← Older revision		Revision as of 12:41, 23 February 2025
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	<syntaxhighlight lang="nix">{ pkgs, ... }: {		<syntaxhighlight lang="nix">{ pkgs, ... }: {
	nix ~~= {~~		nix.settings.experimental-features = [
	~~extraOptions = ''~~		"ca-derivations"
	experimental-features = ca-derivations		];
	~~'';~~
	};
	}</syntaxhighlight>		}</syntaxhighlight>
	=== Non NixOS ===		=== Non NixOS ===

2023-10-10T03:15:56Z

remove unnecessary setting

← Older revision		Revision as of 03:15, 10 October 2023
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	<syntaxhighlight lang="nix">{ pkgs, ... }: {		<syntaxhighlight lang="nix">{ pkgs, ... }: {
	nix = {		nix = {
	~~package = pkgs.nixUnstable;~~
	extraOptions = ''		extraOptions = ''
	experimental-features = ca-derivations		experimental-features = ca-derivations

2022-11-21T13:57:57Z

Fix markup

← Older revision		Revision as of 13:57, 21 November 2022
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	Make sure the file `/etc/nix/nix.conf` exists and contains the following:		Make sure the file `/etc/nix/nix.conf` exists and contains the following:
	~~```~~
			<syntaxhighlight lang="ini">
	experimental-features = ca-derivations		experimental-features = ca-derivations
	~~```~~		</syntaxhighlight>

	== Using CA derivations ==		== Using CA derivations ==

2022-11-21T13:56:44Z

Add non-NixOS instructions

← Older revision		Revision as of 13:56, 21 November 2022
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	=== Non NixOS ===		=== Non NixOS ===

	~~TODO~~		Make sure the file `/etc/nix/nix.conf` exists and contains the following:
			```
			experimental-features = ca-derivations
			```
	== Using CA derivations ==		== Using CA derivations ==

2022-10-11T08:38:53Z

remove ca-references

← Older revision		Revision as of 08:38, 11 October 2022
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	package = pkgs.nixUnstable;		package = pkgs.nixUnstable;
	extraOptions = ''		extraOptions = ''
	experimental-features = ca-derivations ~~ca-references~~		experimental-features = ca-derivations
	'';		'';
	};		};

2022-10-11T08:37:21Z

remove reference to ca-reference

← Older revision		Revision as of 08:37, 11 October 2022
Line 15:		Line 15:
	package = pkgs.nixUnstable;		package = pkgs.nixUnstable;
	extraOptions = ''		extraOptions = ''
	experimental-features = ca-derivations		experimental-features = ca-derivations ca-references
	'';		'';
	};		};

2022-10-11T08:36:42Z

remove reference to ca-reference

← Older revision		Revision as of 08:36, 11 October 2022
Line 15:		Line 15:
	package = pkgs.nixUnstable;		package = pkgs.nixUnstable;
	extraOptions = ''		extraOptions = ''
	experimental-features = ca-derivations ~~ca-references~~		experimental-features = ca-derivations
	'';		'';
	};		};

2021-09-05T19:44:35Z

← Older revision		Revision as of 19:44, 5 September 2021
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	== Links ==		== Links ==
	Tweag + Nix dev update #12: https://discourse.nixos.org/t/tweag-nix-dev-update-12/13185/3		Tweag + Nix dev update #12: https://discourse.nixos.org/t/tweag-nix-dev-update-12/13185/3

			[[Category:Nix]]