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<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="sec-release-14.04">
<title>Release 14.04 (“Baboon”, 2014/04/30)</title>
<para>
This is the second stable release branch of NixOS. In addition to numerous
new and upgraded packages and modules, this release has the following
highlights:
<itemizedlist>
<listitem>
<para>
Installation on UEFI systems is now supported. See
<xref linkend="sec-installation"/> for details.
</para>
</listitem>
<listitem>
<para>
Systemd has been updated to version 212, which has
<link xlink:href="http://cgit.freedesktop.org/systemd/systemd/plain/NEWS?id=v212">numerous
improvements</link>. NixOS now automatically starts systemd user instances
when you log in. You can define global user units through the
<option>systemd.unit.*</option> options.
</para>
</listitem>
<listitem>
<para>
NixOS is now based on Glibc 2.19 and GCC 4.8.
</para>
</listitem>
<listitem>
<para>
The default Linux kernel has been updated to 3.12.
</para>
</listitem>
<listitem>
<para>
KDE has been updated to 4.12.
</para>
</listitem>
<listitem>
<para>
GNOME 3.10 experimental support has been added.
</para>
</listitem>
<listitem>
<para>
Nix has been updated to 1.7
(<link
xlink:href="https://nixos.org/nix/manual/#ssec-relnotes-1.7">details</link>).
</para>
</listitem>
<listitem>
<para>
NixOS now supports fully declarative management of users and groups. If
you set <option>users.mutableUsers</option> to <literal>false</literal>,
then the contents of <filename>/etc/passwd</filename> and
<filename>/etc/group</filename> will be
<link
xlink:href="https://www.usenix.org/legacy/event/lisa02/tech/full_papers/traugott/traugott_html/">congruent</link>
to your NixOS configuration. For instance, if you remove a user from
<option>users.extraUsers</option> and run
<command>nixos-rebuild</command>, the user account will cease to exist.
Also, imperative commands for managing users and groups, such as
<command>useradd</command>, are no longer available. If
<option>users.mutableUsers</option> is <literal>true</literal> (the
default), then behaviour is unchanged from NixOS 13.10.
</para>
</listitem>
<listitem>
<para>
NixOS now has basic container support, meaning you can easily run a NixOS
instance as a container in a NixOS host system. These containers are
suitable for testing and experimentation but not production use, since
they’re not fully isolated from the host. See
<xref linkend="ch-containers"/> for details.
</para>
</listitem>
<listitem>
<para>
Systemd units provided by packages can now be overridden from the NixOS
configuration. For instance, if a package <literal>foo</literal> provides
systemd units, you can say:
<programlisting>
systemd.packages = [ pkgs.foo ];
</programlisting>
to enable those units. You can then set or override unit options in the
usual way, e.g.
<programlisting>
systemd.services.foo.wantedBy = [ "multi-user.target" ];
systemd.services.foo.serviceConfig.MemoryLimit = "512M";
</programlisting>
</para>
</listitem>
</itemizedlist>
</para>
<para>
When upgrading from a previous release, please be aware of the following
incompatible changes:
<itemizedlist>
<listitem>
<para>
Nixpkgs no longer exposes unfree packages by default. If your NixOS
configuration requires unfree packages from Nixpkgs, you need to enable
support for them explicitly by setting:
<programlisting>
nixpkgs.config.allowUnfree = true;
</programlisting>
Otherwise, you get an error message such as:
<screen>
error: package ‘nvidia-x11-331.49-3.12.17’ in ‘…/nvidia-x11/default.nix:56’
has an unfree license, refusing to evaluate
</screen>
</para>
</listitem>
<listitem>
<para>
The Adobe Flash player is no longer enabled by default in the Firefox and
Chromium wrappers. To enable it, you must set:
<programlisting>
nixpkgs.config.allowUnfree = true;
nixpkgs.config.firefox.enableAdobeFlash = true; # for Firefox
nixpkgs.config.chromium.enableAdobeFlash = true; # for Chromium
</programlisting>
</para>
</listitem>
<listitem>
<para>
The firewall is now enabled by default. If you don’t want this, you need
to disable it explicitly:
<programlisting>
networking.firewall.enable = false;
</programlisting>
</para>
</listitem>
<listitem>
<para>
The option <option>boot.loader.grub.memtest86</option> has been renamed to
<option>boot.loader.grub.memtest86.enable</option>.
</para>
</listitem>
<listitem>
<para>
The <literal>mysql55</literal> service has been merged into the
<literal>mysql</literal> service, which no longer sets a default for the
option <option>services.mysql.package</option>.
</para>
</listitem>
<listitem>
<para>
Package variants are now differentiated by suffixing the name, rather than
the version. For instance, <filename>sqlite-3.8.4.3-interactive</filename>
is now called <filename>sqlite-interactive-3.8.4.3</filename>. This
ensures that <literal>nix-env -i sqlite</literal> is unambiguous, and that
<literal>nix-env -u</literal> won’t “upgrade”
<literal>sqlite</literal> to <literal>sqlite-interactive</literal> or vice
versa. Notably, this change affects the Firefox wrapper (which provides
plugins), as it is now called <literal>firefox-wrapper</literal>. So when
using <command>nix-env</command>, you should do <literal>nix-env -e
firefox; nix-env -i firefox-wrapper</literal> if you want to keep using
the wrapper. This change does not affect declarative package management,
since attribute names like <literal>pkgs.firefoxWrapper</literal> were
already unambiguous.
</para>
</listitem>
<listitem>
<para>
The symlink <filename>/etc/ca-bundle.crt</filename> is gone. Programs
should instead use the environment variable
<envar>OPENSSL_X509_CERT_FILE</envar> (which points to
<filename>/etc/ssl/certs/ca-bundle.crt</filename>).
</para>
</listitem>
</itemizedlist>
</para>
</section>
|