105 lines
		
	
	
	
		
			3.4 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
			
		
		
	
	
			105 lines
		
	
	
	
		
			3.4 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
<section xmlns="http://docbook.org/ns/docbook"
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      xmlns:xlink="http://www.w3.org/1999/xlink"
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      xmlns:xi="http://www.w3.org/2001/XInclude"
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      version="5.0"
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      xml:id="ssec-relnotes-1.11">
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<title>Release 1.11 (2015-01-05)</title>
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<para>This is primarily a bug fix release. It also has a number of new
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features:</para>
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<itemizedlist>
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  <listitem>
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    <para><command>nix-prefetch-url</command> can now download URLs
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    specified in a Nix expression. For example,
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<screen>
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$ nix-prefetch-url -A hello.src
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</screen>
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    will prefetch the file specified by the
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    <function>fetchurl</function> call in the attribute
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    <literal>hello.src</literal> from the Nix expression in the
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    current directory, and print the cryptographic hash of the
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    resulting file on stdout. This differs from <literal>nix-build -A
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    hello.src</literal> in that it doesn't verify the hash, and is
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    thus useful when you’re updating a Nix expression.</para>
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    <para>You can also prefetch the result of functions that unpack a
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    tarball, such as <function>fetchFromGitHub</function>. For example:
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<screen>
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$ nix-prefetch-url --unpack https://github.com/NixOS/patchelf/archive/0.8.tar.gz
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</screen>
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    or from a Nix expression:
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<screen>
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$ nix-prefetch-url -A nix-repl.src
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</screen>
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    </para>
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  </listitem>
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  <listitem>
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    <para>The builtin function
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    <function><nix/fetchurl.nix></function> now supports
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    downloading and unpacking NARs. This removes the need to have
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    multiple downloads in the Nixpkgs stdenv bootstrap process (like a
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    separate busybox binary for Linux, or curl/mkdir/sh/bzip2 for
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    Darwin). Now all those files can be combined into a single NAR,
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    optionally compressed using <command>xz</command>.</para>
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  </listitem>
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  <listitem>
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    <para>Nix now supports SHA-512 hashes for verifying fixed-output
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    derivations, and in <function>builtins.hashString</function>.</para>
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  </listitem>
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  <listitem>
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    <para>
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      The new flag <option>--option build-repeat
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      <replaceable>N</replaceable></option> will cause every build to
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      be executed <replaceable>N</replaceable>+1 times. If the build
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      output differs between any round, the build is rejected, and the
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      output paths are not registered as valid. This is primarily
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      useful to verify build determinism. (We already had a
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      <option>--check</option> option to repeat a previously succeeded
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      build. However, with <option>--check</option>, non-deterministic
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      builds are registered in the DB. Preventing that is useful for
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      Hydra to ensure that non-deterministic builds don't end up
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      getting published to the binary cache.)
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    </para>
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  </listitem>
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  <listitem>
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    <para>Improved FreeBSD support.</para>
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  </listitem>
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  <listitem>
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    <para><command>nix-env -qa --xml --meta</command> now prints
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    license information.</para>
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  </listitem>
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  <listitem>
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    <para>The maximum number of parallel TCP connections that the
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    binary cache substituter will use has been decreased from 150 to
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    25. This should prevent upsetting some broken NAT routers, and
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    also improves performance.</para>
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  </listitem>
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  <listitem>
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    <para>All "chroot"-containing strings got renamed to "sandbox".
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      In particular, some Nix options got renamed, but the old names
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      are still accepted as lower-priority aliases.
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    </para>
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  </listitem>
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</itemizedlist>
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<para>This release has contributions from TODO.</para>
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</section>
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