mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-22 22:16:16 +02:00
143 lines
4.4 KiB
XML
143 lines
4.4 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
version="5.0"
|
|
xml:id="ssec-relnotes-2.2">
|
|
|
|
<title>Release 2.2 (2019-01-11)</title>
|
|
|
|
<para>This is primarily a bug fix release. It also has the following
|
|
changes:</para>
|
|
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>In derivations that use structured attributes (i.e. that
|
|
specify set the <varname>__structuredAttrs</varname> attribute to
|
|
<literal>true</literal> to cause all attributes to be passed to
|
|
the builder in JSON format), you can now specify closure checks
|
|
per output, e.g.:
|
|
|
|
<programlisting>
|
|
outputChecks."out" = {
|
|
# The closure of 'out' must not be larger than 256 MiB.
|
|
maxClosureSize = 256 * 1024 * 1024;
|
|
|
|
# It must not refer to C compiler or to the 'dev' output.
|
|
disallowedRequisites = [ stdenv.cc "dev" ];
|
|
};
|
|
|
|
outputChecks."dev" = {
|
|
# The 'dev' output must not be larger than 128 KiB.
|
|
maxSize = 128 * 1024;
|
|
};
|
|
</programlisting>
|
|
|
|
</para>
|
|
</listitem>
|
|
|
|
|
|
<listitem>
|
|
<para>The derivation attribute
|
|
<varname>requiredSystemFeatures</varname> is now enforced for
|
|
local builds, and not just to route builds to remote builders.
|
|
The supported features of a machine can be specified through the
|
|
configuration setting <varname>system-features</varname>.</para>
|
|
|
|
<para>By default, <varname>system-features</varname> includes
|
|
<literal>kvm</literal> if <filename>/dev/kvm</filename>
|
|
exists. For compatibility, it also includes the pseudo-features
|
|
<literal>nixos-test</literal>, <literal>benchmark</literal> and
|
|
<literal>big-parallel</literal> which are used by Nixpkgs to route
|
|
builds to particular Hydra build machines.</para>
|
|
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>Sandbox builds are now enabled by default on Linux.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>The new command <command>nix doctor</command> shows
|
|
potential issues with your Nix installation.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>The <literal>fetchGit</literal> builtin function now uses a
|
|
caching scheme that puts different remote repositories in distinct
|
|
local repositories, rather than a single shared repository. This
|
|
may require more disk space but is faster.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>The <literal>dirOf</literal> builtin function now works on
|
|
relative paths.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>Nix now supports <link
|
|
xlink:href="https://www.w3.org/TR/SRI/">SRI hashes</link>,
|
|
allowing the hash algorithm and hash to be specified in a single
|
|
string. For example, you can write:
|
|
|
|
<programlisting>
|
|
import <nix/fetchurl.nix> {
|
|
url = https://nixos.org/releases/nix/nix-2.1.3/nix-2.1.3.tar.xz;
|
|
hash = "sha256-XSLa0FjVyADWWhFfkZ2iKTjFDda6mMXjoYMXLRSYQKQ=";
|
|
};
|
|
</programlisting>
|
|
|
|
instead of
|
|
|
|
<programlisting>
|
|
import <nix/fetchurl.nix> {
|
|
url = https://nixos.org/releases/nix/nix-2.1.3/nix-2.1.3.tar.xz;
|
|
sha256 = "5d22dad058d5c800d65a115f919da22938c50dd6ba98c5e3a183172d149840a4";
|
|
};
|
|
</programlisting>
|
|
|
|
</para>
|
|
|
|
<para>In fixed-output derivations, the
|
|
<varname>outputHashAlgo</varname> attribute is no longer mandatory
|
|
if <varname>outputHash</varname> specifies the hash.</para>
|
|
|
|
<para><command>nix hash-file</command> and <command>nix
|
|
hash-path</command> now print hashes in SRI format by
|
|
default. They also use SHA-256 by default instead of SHA-512
|
|
because that's what we use most of the time in Nixpkgs.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>Integers are now 64 bits on all platforms.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>The evaluator now prints profiling statistics (enabled via
|
|
the <envar>NIX_SHOW_STATS</envar> and
|
|
<envar>NIX_COUNT_CALLS</envar> environment variables) in JSON
|
|
format.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>The option <option>--xml</option> in <command>nix-store
|
|
--query</command> has been removed. Instead, there now is an
|
|
option <option>--graphml</option> to output the dependency graph
|
|
in GraphML format.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>All <filename>nix-*</filename> commands are now symlinks to
|
|
<filename>nix</filename>. This saves a bit of disk space.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><command>nix repl</command> now uses
|
|
<literal>libeditline</literal> or
|
|
<literal>libreadline</literal>.</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</section>
|
|
|