nixpkgs/nixos/doc/manual/release-notes/rl-1703.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="sec-release-17.03">

<title>Release 17.03 (“XXX”, 2017/03/??)</title>

<para>In addition to numerous new and upgraded packages, this release
has the following highlights: </para>

<itemizedlist>
  <listitem>
    <para>Nixpkgs is now extensible through overlays. See the <link
    xlink:href="https://nixos.org/nixpkgs/manual/#sec-overlays-install">Nixpkgs
    manual</link> for more information.</para>
  </listitem>

  <listitem>
    <para>The setuid wrapper functionality now supports setting
    capabilities.</para>
  </listitem>

  <listitem>
    <para>X.org server uses branch 1.19.  Due to ABI incompatibilities,
      <literal>ati_unfree</literal> keeps forcing 1.17
      and <literal>amdgpu-pro</literal> starts forcing 1.18.</para>
  </listitem>

  <listitem>
    <para>PHP now defaults to PHP 7.1</para>
  </listitem>

  <listitem>
    <para>Packages in nixpkgs can be marked as insecure through listed
    vulnerabilities. See the <link
    xlink:href="https://nixos.org/nixpkgs/manual/#sec-allow-insecure">Nixpkgs
    manual</link> for more information.</para>
  </listitem>

</itemizedlist>

<para>The following new services were added since the last release:</para>

<itemizedlist>
  <listitem>
    <para></para>
  </listitem>
</itemizedlist>


<para>When upgrading from a previous release, please be aware of the
following incompatible changes:</para>

<itemizedlist>
  <listitem>
    <para>
      Cross compilation has been rewritten. See the nixpkgs manual for
      details. The most obvious breaking change is that derivations absent a
      <literal>.nativeDrv</literal> or <literal>.crossDrv</literal> are now
      cross by default, not native.
    </para>
  </listitem>

  <listitem>
    <para>
      <literal>stdenv.overrides</literal> is now expected to take <literal>self</literal>
      and <literal>super</literal> arguments. See <literal>lib.trivial.extends</literal>
      for what those parameters represent.
    </para>
  </listitem>

  <listitem>
    <para>
      <literal>ansible</literal> now defaults to ansible version 2 as version 1
      has been removed due to a serious <link
      xlink:href="https://www.computest.nl/advisories/CT-2017-0109_Ansible.txt">
      vulnerability</link> unpatched by upstream.
    </para>
  </listitem>

  <listitem>
    <para>
      <literal>gnome</literal> alias has been removed along with
      <literal>gtk</literal>, <literal>gtkmm</literal> and several others.
      Now you need to use versioned attributes, like <literal>gnome3</literal>.
    </para>
  </listitem>

  <listitem>
    <para>
      The attribute name of the Radicale daemon has been changed from
      <literal>pythonPackages.radicale</literal> to
      <literal>radicale</literal>.
    </para>
  </listitem>

  <listitem>
    <para>
      The Yama LSM is now enabled by default in the kernel,
      which prevents ptracing non-child processes.
      This means you will not be able to attach gdb to an existing process,
      but will need to start that process from gdb (so it is a child).
    </para>
  </listitem>

  <listitem>
    <para>
      The <literal>stripHash</literal> bash function in <literal>stdenv</literal>
      changed according to its documentation; it now outputs the stripped name to
      <literal>stdout</literal> instead of putting it in the variable
      <literal>strippedName</literal>.
    </para>
  </listitem>

  <listitem>
    <para>PHP now scans for extra configuration .ini files in /etc/php.d
    instead of /etc. This prevents accidentally loading non-PHP .ini files
    that may be in /etc.
    </para>
  </listitem>

  <listitem>
    <para>
      Two lone top-level dict dbs moved into <literal>dictdDBs</literal>. This
      affects: <literal>dictdWordnet</literal> which is now at
      <literal>dictdDBs.wordnet</literal> and <literal>dictdWiktionary</literal>
      which is now at <literal>dictdDBs.wiktionary</literal>
    </para>
  </listitem>

  <listitem>
    <para>
      Parsoid service now uses YAML configuration format.
     <literal>service.parsoid.interwikis</literal> is now called
     <literal>service.parsoid.wikis</literal> and is a list of either API URLs
     or attribute sets as specified in parsoid's documentation.
    </para>
  </listitem>

  <listitem>
    <para>
     <literal>Ntpd</literal> was replaced by
     <literal>systemd-timesyncd</literal> as the default service to synchronize
     system time with a remote NTP server. The old behavior can be restored by
     setting <literal>services.ntp.enable</literal> to <literal>true</literal>.
     Upstream time servers for all NTP implementations are now configured using
     <literal>networking.timeServers</literal>.
   </para>
  </listitem>

  <listitem>
    <para>
      <literal>service.nylon</literal> is now declared using named instances.
      As an example:

<programlisting>
  services.nylon = {
    enable = true;
    acceptInterface = "br0";
    bindInterface = "tun1";
    port = 5912;
  };
</programlisting>

      should be replaced with:

<programlisting>
  services.nylon.myvpn = {
    enable = true;
    acceptInterface = "br0";
    bindInterface = "tun1";
    port = 5912;
  };
</programlisting>

      this enables you to declare a SOCKS proxy for each uplink.

    </para>
  </listitem>

  <listitem>
    <para><literal>overridePackages</literal> function no longer exists.
    It is replaced by <link
    xlink:href="https://nixos.org/nixpkgs/manual/#sec-overlays-install">
    overlays</link>.  For example, the following code:

<programlisting>
  let
    pkgs = import &lt;nixpkgs&gt; {};
  in
    pkgs.overridePackages (self: super: ...)
</programlisting>

    should be replaced by:

<programlisting>
  let
    pkgs = import &lt;nixpkgs&gt; {};
  in
    import pkgs.path { overlays = [(self: super: ...)] }
</programlisting>

    </para>
  </listitem>

  <listitem>
    <para>
      Autoloading connection tracking helpers is now disabled by default.
      This default was also changed in the Linux kernel and is considered
      insecure if not configured properly in your firewall. If you need
      connection tracking helpers (i.e. for active FTP) please enable
      <literal>networking.firewall.autoLoadConntrackHelpers</literal> and
      tune <literal>networking.firewall.connectionTrackingModules</literal>
      to suit your needs.
    </para>
  </listitem>

  <listitem>
    <para>
      <literal>local_recipient_maps</literal> is not set to empty value by
      Postfix service. It's an insecure default as stated by Postfix
      documentation. Those who want to retain this setting need to set it via
      <literal>services.postfix.extraConfig</literal>.
    </para>
  </listitem>

  <listitem>
    <para>
    Iputils no longer provide ping6 and traceroute6. The functionality of
    these tools have been integrated into ping and traceroute respectively. To
    enforce an address family the new flags <literal>-4</literal> and
    <literal>-6</literal> have been added. One notable incompatibility is that
    specifying an interface (for link-local IPv6 for instance) is no longer done
    with the <literal>-I</literal> flag, but by encoding the interface into the
    address (<literal>ping fe80::1%eth0</literal>).
    </para>
  </listitem>

  <listitem>
    <para>
      The socket handling of the <literal>services.rmilter</literal> module
      has been fixed and refactored. As rmilter doesn't support binding to
      more than one socket, the options <literal>bindUnixSockets</literal>
      and <literal>bindInetSockets</literal> have been replaced by
      <literal>services.rmilter.bindSocket.*</literal>. The default is still
      a unix socket in <literal>/run/rmilter/rmilter.sock</literal>. Refer to
      the options documentation for more information.
    </para>
  </listitem>

</itemizedlist>


<para>Other notable changes:</para>

<itemizedlist>

  <listitem>
    <para>Module type system have a new extensible option types feature that
      allow to extend certain types, such as enum, through multiple option
      declarations of the same option across multiple modules.
    </para>
  </listitem>

  <listitem>
    <para>
      <literal>jre</literal> now defaults to GTK+ UI by default. This
      improves visual consistency and makes Java follow system font style,
      improving the situation on HighDPI displays. This has a cost of increased
      closure size; for server and other headless workloads it's recommended to
      use <literal>jre_headless</literal>.
    </para>
  </listitem>

  <listitem>
    <para>
      Python 2.7, 3.5 and 3.6 are now built deterministically and 3.4 mostly.
      Minor modifications had to be made to the interpreters in order to generate
      deterministic bytecode. This has security implications and is relevant for
      those using Python in a <literal>nix-shell</literal>. See the Nixpkgs manual
      for details.
    </para>
  </listitem>

  <listitem>
    <para>
      When adding new or updating current libraries, the expressions should be put
      in separate files in <literal>pkgs/development/python-modules</literal> and 
      called from <literal>python-packages.nix</literal>.
    </para>
  </listitem>

</itemizedlist>


</section>