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