Nix on Travis - Revision history

imported>Erikarvstedt at 09:53, 22 August 2020

2020-08-22T09:53:10Z

← Older revision		Revision as of 09:53, 22 August 2020
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	Travis-CI provides a <code>language: nix</code> setting (to put in a ''.travis.yml'' file) to run continuous integration scripts on a machine with Nix installed.		Travis-CI provides a <code>language: nix</code> setting (to put in a ''.travis.yml'' file) to run continuous integration scripts on a machine with Nix installed.

	See [https://docs.travis-ci.com/user/languages/nix Travis-CI documentation for Nix], [https://github.com/travis-ci/travis-build/blob/master/lib/travis/build/script/nix.rb Travis source code for Nix ~~support~~].		See [https://docs.travis-ci.com/user/languages/nix Travis-CI documentation for Nix], [https://github.com/travis-ci/travis-build/blob/master/lib/travis/build/script/nix.rb Travis source code for Nix].

	== Caching dependencies ==		== Caching dependencies ==

imported>Erikarvstedt: Add link to implementation

2020-08-22T09:51:02Z

Add link to implementation

← Older revision		Revision as of 09:51, 22 August 2020
Line 1:		Line 1:
	Travis-CI provides a <code>language: nix</code> setting (to put in a ''.travis.yml'' file) to run continuous integration scripts on a machine with Nix installed.		Travis-CI provides a <code>language: nix</code> setting (to put in a ''.travis.yml'' file) to run continuous integration scripts on a machine with Nix installed.

	See [https://docs.travis-ci.com/user/languages/nix Travis-CI documentation for Nix].		See [https://docs.travis-ci.com/user/languages/nix Travis-CI documentation for Nix], [https://github.com/travis-ci/travis-build/blob/master/lib/travis/build/script/nix.rb Travis source code for Nix support].

	== Caching dependencies ==		== Caching dependencies ==

imported>HaoZeke: Update mkdir syntax

2020-08-21T03:22:05Z

Update mkdir syntax

← Older revision		Revision as of 03:22, 21 August 2020
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	<syntaxHighlight lang=nix>		<syntaxHighlight lang=nix>
	before_script:		before_script:
	- sudo mkdir /etc/nix && echo 'sandbox = true' \| sudo tee /etc/nix/nix.conf		- sudo mkdir -p /etc/nix && echo 'sandbox = true' \| sudo tee /etc/nix/nix.conf
	</syntaxHighlight>		</syntaxHighlight>

imported>Mic92 at 19:07, 15 November 2018

2018-11-15T19:07:54Z

← Older revision		Revision as of 19:07, 15 November 2018
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	At the moment travis does not have a sandbox enabled by default.		At the moment travis does not have a sandbox enabled by default.
	This can lead to ~~not~~-~~easy~~ to reproduce errors,		This can lead to non-trivial to reproduce errors,
	when files from the travis image interfere with the build.		when files from the travis image interfere with the build.
	Enabling is straight-forward by using the following little snippet:		Enabling however is straight-forward by using the following little snippet:

	<syntaxHighlight lang=nix>		<syntaxHighlight lang=nix>

imported>Mic92: fix markup

2018-11-15T19:06:01Z

fix markup

← Older revision		Revision as of 19:06, 15 November 2018
Line 41:		Line 41:
	Enabling is straight-forward by using the following little snippet:		Enabling is straight-forward by using the following little snippet:

	<~~syntaxHighlighting~~ lang=nix>		<syntaxHighlight lang=nix>
	before_script:		before_script:
	- sudo mkdir /etc/nix && echo 'sandbox = true' \| sudo tee /etc/nix/nix.conf		- sudo mkdir /etc/nix && echo 'sandbox = true' \| sudo tee /etc/nix/nix.conf
	</~~syntaxHighlighting~~>		</syntaxHighlight>

imported>Mic92: sandboxing

2018-11-15T19:05:37Z

sandboxing

← Older revision		Revision as of 19:05, 15 November 2018
Line 33:		Line 33:

	NB: in this setting, the cache only grows. It might be manually deleted when it becomes too bloated but smarter eviction strategies can be implemented too!		NB: in this setting, the cache only grows. It might be manually deleted when it becomes too bloated but smarter eviction strategies can be implemented too!

			== Enable sandboxed builds ==

			At the moment travis does not have a sandbox enabled by default.
			This can lead to not-easy to reproduce errors,
			when files from the travis image interfere with the build.
			Enabling is straight-forward by using the following little snippet:

			<syntaxHighlighting lang=nix>
			before_script:
			- sudo mkdir /etc/nix && echo 'sandbox = true' \| sudo tee /etc/nix/nix.conf
			</syntaxHighlighting>

imported>Asymmetric: /* Caching dependencies */ binary-caches -> substituters

2018-06-21T08:11:17Z

Caching dependencies: binary-caches -> substituters

← Older revision		Revision as of 08:11, 21 June 2018
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	<pre>before_install:		<pre>before_install:
	- sudo mkdir -p /etc/nix		- sudo mkdir -p /etc/nix
	- echo "~~binary-caches~~ = https://cache.nixos.org/ file://$HOME/nix.store" \| sudo tee -a /etc/nix/nix.conf > /dev/null		- echo "substituters = https://cache.nixos.org/ file://$HOME/nix.store" \| sudo tee -a /etc/nix/nix.conf > /dev/null
	- echo 'require-sigs = false' \| sudo tee -a /etc/nix/nix.conf > /dev/null</pre>		- echo 'require-sigs = false' \| sudo tee -a /etc/nix/nix.conf > /dev/null</pre>

imported>Vbgl: on caching

2018-05-07T06:48:29Z

on caching

← Older revision		Revision as of 06:48, 7 May 2018
Line 2:		Line 2:

	See [https://docs.travis-ci.com/user/languages/nix Travis-CI documentation for Nix].		See [https://docs.travis-ci.com/user/languages/nix Travis-CI documentation for Nix].

			== Caching dependencies ==

			Build dependencies are usually downloaded from some online public binary cache; but some dependencies are not available on such a cache and must be built on the CI machine on every run. It is however possible to reuse the result of such local builds from one run of the CI script to the next one by means of [https://docs.travis-ci.com/user/caching/ Travis CI caching feature].

			A Nix binary cache can be set up in a local directory (say ''~/nix.store'') which will be preserved between CI runs:

			<pre>cache:
			directories:
			- $HOME/nix.store</pre>

			Nix must then be configured to read from this local binary cache:

			<pre>before_install:
			- sudo mkdir -p /etc/nix
			- echo "binary-caches = https://cache.nixos.org/ file://$HOME/nix.store" \| sudo tee -a /etc/nix/nix.conf > /dev/null
			- echo 'require-sigs = false' \| sudo tee -a /etc/nix/nix.conf > /dev/null</pre>

			The first line ensures the directory holding Nix’s configuration files exists.
			The second line declares two binary cache: the main only hydra cache and the locally cached directory.
			The third line declares that cached closures need not be signed; indeed the local directory will not be signed.

			Finally, actual data must be stored in the cache:

			<pre>before_cache:
			- mkdir -p $HOME/nix.store
			- nix copy --to file://$HOME/nix.store -f default.nix buildInputs</pre>

			In this example, the ''buildInputs'' from ''default.nix'' are added to the binary cache.

			NB: in this setting, the cache only grows. It might be manually deleted when it becomes too bloated but smarter eviction strategies can be implemented too!

imported>Vbgl: Creation

2018-05-07T05:59:42Z

Creation

New page

Travis-CI provides a <code>language: nix</code> setting (to put in a ''.travis.yml'' file) to run continuous integration scripts on a machine with Nix installed.

See [https://docs.travis-ci.com/user/languages/nix Travis-CI documentation for Nix].