2006-08-22 15:19:06 +02:00
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<article xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink">
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2005-09-14 20:50:45 +02:00
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2006-08-21 18:05:11 +02:00
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<title>Nix Release Notes</title>
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2005-09-14 20:50:45 +02:00
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2006-09-27 14:43:00 +02:00
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<!--==================================================================-->
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2005-12-15 22:11:55 +01:00
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<section><title>Release 0.10 (TBA)</title>
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<note><para>This version of Nix uses Berkeley DB 4.4 instead of 4.3.
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The database is upgraded automatically, but you should be careful not
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to use old versions of Nix that still use Berkeley DB 4.3. In
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particular, if you use a Nix installed through Nix, you should run
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<screen>
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$ nix-store --clear-substitutes</screen>
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first.</para></note>
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<warning><para>Also, the database schema has changed slighted to fix a
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performance issue (see below). When you run any Nix 0.10 command for
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the first time, the database will be upgraded automatically. This is
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irreversible.</para></warning>
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<itemizedlist>
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2006-09-27 15:27:26 +02:00
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<!-- Usability / features -->
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2005-12-15 22:11:55 +01:00
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2006-09-27 15:27:26 +02:00
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2006-09-27 14:43:00 +02:00
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<listitem><para><command>nix-env</command> usability improvements:
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<itemizedlist>
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<listitem><para>An option <option>--compare-versions</option>
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(or <option>-c</option>) has been added to <command>nix-env
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--query</command> to allow you to compare installed versions of
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packages to available versions, or vice versa. An easy way to
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see if you are up to date with what’s in the channel is
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<literal>nix-env -qc \*</literal>.</para></listitem>
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<listitem><para><literal>nix-env --query</literal> now takes as
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arguments a list of package names about which to show
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information, just like <option>--install</option>, etc.: for
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example, <literal>nix-env -q gcc</literal>. Note that to show
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all derivations, you need to specify
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<literal>\*</literal>.</para></listitem>
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<listitem><para><literal>nix-env -i
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<replaceable>pkgname</replaceable></literal> will now install
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the highest available version of
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<replaceable>pkgname</replaceable>, rather than installing all
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available versions (which would probably give collisions)
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(<literal>NIX-31</literal>).</para></listitem>
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<listitem><para><literal>nix-env (-i|-u) --dry-run</literal> now
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shows exactly which missing paths will be built or
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substituted.</para></listitem>
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<listitem><para><literal>nix-env -qa --description</literal>
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shows human-readable descriptions of packages, provided that
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they have a <literal>meta.description</literal> attribute (which
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most packages in Nixpkgs don’t have yet).</para></listitem>
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</itemizedlist>
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</para></listitem>
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2006-08-21 18:05:11 +02:00
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2006-08-22 15:19:06 +02:00
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<listitem><para>New language features:
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<itemizedlist>
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<listitem><para>Reference scanning (which happens after each
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2006-09-27 14:43:00 +02:00
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build) is much faster and takes a constant amount of
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memory.</para></listitem>
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2006-08-22 15:19:06 +02:00
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<listitem><para>String interpolation. Expressions like
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<programlisting>
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"--with-freetype2-library=" + freetype + "/lib"</programlisting>
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can now be written as
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<programlisting>
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"--with-freetype2-library=${freetype}/lib"</programlisting>
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You can write arbitrary expressions within
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<literal>${<replaceable>...</replaceable>}</literal>, not just
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identifiers.</para></listitem>
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<listitem><para>Multi-line string literals.</para></listitem>
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2006-05-08 16:00:39 +02:00
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2006-09-27 14:43:00 +02:00
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<listitem><para>String concatenations can now involve
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2006-09-27 15:27:26 +02:00
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derivations, as in the example <code>"--with-freetype2-library="
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+ freetype + "/lib"</code>. This was not previously possible
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because we need to register that a derivation that uses such a
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string is dependent on <literal>freetype</literal>. The
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evaluator now properly propagates this information.
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Consequently, the subpath operator (<literal>~</literal>) has
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been deprecated.</para></listitem>
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2006-05-08 16:00:39 +02:00
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2006-09-27 14:43:00 +02:00
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<listitem><para>Default values of function arguments can now
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refer to other function arguments; that is, all arguments are in
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scope in the default values
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(<literal>NIX-45</literal>).</para></listitem>
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2006-08-22 15:19:06 +02:00
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2006-09-27 14:43:00 +02:00
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<!--
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2006-08-22 15:19:06 +02:00
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<listitem><para>TODO: domain checks (r5895).</para></listitem>
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2006-09-27 14:43:00 +02:00
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-->
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2006-08-22 15:19:06 +02:00
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2006-09-27 15:27:26 +02:00
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<listitem><para>Lots of new builtin primitives, such as
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functions for list manipulation and integer arithmetic. See the
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manual for a complete list. All primops are now available in
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the set <varname>builtins</varname>, allowing one to test for
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the availability of primop in a backwards-compatible
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way.</para></listitem>
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2006-10-02 18:14:30 +02:00
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<listitem><para>Real let-expressions: <literal>let x = ...;
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... z = ...; in ...</literal>.</para></listitem>
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2006-08-22 15:19:06 +02:00
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</itemizedlist>
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</para></listitem>
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2006-09-27 15:27:26 +02:00
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<listitem><para>New commands <command>nix-pack-closure</command> and
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<command>nix-unpack-closure</command> than can be used to easily
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transfer a store path with all its dependencies to another machine.
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Very convenient whenever you have some package on your machine and
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you want to copy it somewhere else.</para></listitem>
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<listitem><para>XML support:
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<itemizedlist>
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<listitem><para><literal>nix-env -q --xml</literal> prints the
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installed or available packages in an XML representation for
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easy processing by other tools.</para></listitem>
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<listitem><para><literal>nix-instantiate --eval-only
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--xml</literal> prints an XML representation of the resulting
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term. (The new flag <option>--strict</option> forces ‘deep’
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evaluation of the result, i.e., list elements and attributes are
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evaluated recursively.)</para></listitem>
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<listitem><para>In Nix expressions, the primop
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<function>builtins.toXML</function> converts a term to an XML
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representation. This is primarily useful for passing structured
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information to builders.</para></listitem>
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</itemizedlist>
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</para></listitem>
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<listitem><para>You can now unambigously specify which derivation to
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build or install in <command>nix-env</command>,
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<command>nix-instantiate</command> and <command>nix-build</command>
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using the <option>--attr</option> / <option>-A</option> flags, which
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takes an attribute name as argument. (Unlike symbolic package names
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such as <literal>subversion-1.4.0</literal>, attribute names in an
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attribute set are unique.) For instance, a quick way to perform a
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test build of a package in Nixpkgs is <literal>nix-build
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pkgs/top-level/all-packages.nix -A
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<replaceable>foo</replaceable></literal>. <literal>nix-env -q
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--attr</literal> shows the attribute names corresponding to each
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derivation.</para></listitem>
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2006-08-22 15:19:06 +02:00
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<listitem><para>If the top-level Nix expression used by
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<command>nix-env</command>, <command>nix-instantiate</command> or
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<command>nix-build</command> evaluates to a function whose arguments
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all have default values, the function will be called automatically.
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Also, the new command-line switch <option>--arg
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<replaceable>name</replaceable>
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<replaceable>value</replaceable></option> can be used to specify
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function arguments on the command line.</para></listitem>
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2006-05-08 16:00:39 +02:00
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2006-09-27 15:27:26 +02:00
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<listitem><para><literal>nix-install-package --url
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<replaceable>URL</replaceable></literal> allows a package to be
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installed directly from the given URL.</para></listitem>
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2006-05-31 11:51:45 +02:00
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2006-08-22 15:19:06 +02:00
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2006-09-27 15:27:26 +02:00
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<listitem><para>Nix now works behind an HTTP proxy server; just set
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the standard environment variables <envar>http_proxy</envar>,
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<envar>https_proxy</envar>, <envar>ftp_proxy</envar> or
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<envar>all_proxy</envar> appropriately. Functions such as
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<function>fetchurl</function> in Nixpkgs also respect these
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variables.</para></listitem>
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2006-06-14 15:31:23 +02:00
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2006-08-22 15:19:06 +02:00
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<listitem><para><literal>nix-build -o
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<replaceable>symlink</replaceable></literal> allows the symlink to
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the build result to be named something other than
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<literal>result</literal>.</para></listitem>
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2006-09-27 15:27:26 +02:00
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<!-- Stability / performance / etc. -->
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<listitem><para>Platform support:
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<itemizedlist>
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<listitem><para>Support for 64-bit platforms, provided a <link
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xlink:href="http://bugzilla.sen.cwi.nl:8080/show_bug.cgi?id=606">suitably
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patched ATerm library</link> is used. Also, files larger than 2
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GiB are now supported.</para></listitem>
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<listitem><para>Added support for Cygwin (Windows,
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<literal>i686-cygwin</literal>), Mac OS X on Intel
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(<literal>i686-darwin</literal>) and Linux on PowerPC
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(<literal>powerpc-linux</literal>).</para></listitem>
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<listitem><para>Users of SMP and multicore machines will
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appreciate that the number of builds to be performed in parallel
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can now be specified in the configuration file in the
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<literal>build-max-jobs</literal> setting.</para></listitem>
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</itemizedlist>
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</para></listitem>
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2006-09-06 16:29:49 +02:00
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<listitem><para>Garbage collector improvements:
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<itemizedlist>
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<listitem><para>Open files (such as running programs) are now
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used as roots of the garbage collector. This prevents programs
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that have been uninstalled from being garbage collected while
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they are still running. The script that detects these
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additional runtime roots
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(<filename>find-runtime-roots.pl</filename>) is inherently
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system-specific, but it should work on Linux and on all
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platforms that have the <command>lsof</command>
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utility.</para></listitem>
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<listitem><para><literal>nix-store --gc</literal>
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(a.k.a. <command>nix-collect-garbage</command>) prints out the
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number of bytes freed on standard output. <literal>nix-store
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--gc --print-dead</literal> shows how many bytes would be freed
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by an actual garbage collection.</para></listitem>
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<listitem><para><literal>nix-collect-garbage -d</literal>
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removes all old generations of <emphasis>all</emphasis> profiles
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before calling the actual garbage collector (<literal>nix-store
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--gc</literal>). This is an easy way to get rid of all old
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packages in the Nix store.</para></listitem>
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2006-09-27 15:27:26 +02:00
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<listitem><para><command>nix-store</command> now has an
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operation <option>--delete</option> to delete specific paths
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from the Nix store. It won’t delete reachable (non-garbage)
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paths unless <option>--ignore-liveness</option> is
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specified.</para></listitem>
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2006-09-06 16:29:49 +02:00
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</itemizedlist>
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</para></listitem>
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2006-08-22 15:19:06 +02:00
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2006-09-27 15:27:26 +02:00
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<listitem><para>Berkeley DB 4.4’s process registry feature is used
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to recover from crashed Nix processes.</para></listitem>
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<!-- <listitem><para>TODO: shared stores.</para></listitem> -->
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<listitem><para>A performance issue has been fixed with the
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<literal>referer</literal> table, which stores the inverse of the
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<literal>references</literal> table (i.e., it tells you what store
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paths refer to a given path). Maintaining this table could take a
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quadratic amount of time, as well as a quadratic amount of Berkeley
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DB log file space (in particular when running the garbage collector)
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(<literal>NIX-23</literal>).</para></listitem>
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<listitem><para>Nix now catches the <literal>TERM</literal> and
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<literal>HUP</literal> signals in addition to the
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<literal>INT</literal> signal. So you can now do a <literal>killall
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nix-store</literal> without triggering a database
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recovery.</para></listitem>
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<listitem><para><command>bsdiff</command> updated
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4.3.</para></listitem>
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2006-08-22 15:19:06 +02:00
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<listitem><para>Substantial performance improvements in expression
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evaluation and <literal>nix-env -qa</literal>, all thanks to <link
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xlink:href="http://valgrind.org/">Valgrind</link>. Memory use has
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been reduced by a factor 8 or so. Big speedup by memoisation of
|
|
|
|
|
path hashing.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Lots of bug fixes, notably:
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Make sure that the garbage collector can run
|
2006-08-23 18:33:21 +02:00
|
|
|
|
succesfully when the disk is full
|
|
|
|
|
(<literal>NIX-18</literal>).</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><command>nix-env</command> now locks the profile
|
|
|
|
|
to prevent races between concurrent <command>nix-env</command>
|
|
|
|
|
operations on the same profile
|
|
|
|
|
(<literal>NIX-7</literal>).</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Removed misleading messages from
|
|
|
|
|
<literal>nix-env -i</literal> (e.g., <literal>installing
|
|
|
|
|
`foo'</literal> followed by <literal>uninstalling
|
|
|
|
|
`foo'</literal>) (<literal>NIX-17</literal>).</para></listitem>
|
2006-08-22 15:19:06 +02:00
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Nix source distributions are a lot smaller now since
|
|
|
|
|
we no longer include a full copy of the Berkeley DB source
|
|
|
|
|
distribution (but only the bits we need).</para></listitem>
|
|
|
|
|
|
2006-09-27 15:27:26 +02:00
|
|
|
|
<listitem><para>Header files are now installed so that external
|
|
|
|
|
programs can use the Nix libraries.</para></listitem>
|
2006-07-25 13:53:22 +02:00
|
|
|
|
|
2005-12-15 22:11:55 +01:00
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
|
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-22 14:23:22 +02:00
|
|
|
|
<section><title>Release 0.9.2 (September 21, 2005)</title>
|
|
|
|
|
|
|
|
|
|
<para>This bug fix release fixes two problems on Mac OS X:
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>If Nix was linked against statically linked versions
|
|
|
|
|
of the ATerm or Berkeley DB library, there would be dynamic link
|
|
|
|
|
errors at runtime.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><command>nix-pull</command> and
|
|
|
|
|
<command>nix-push</command> intermittently failed due to race
|
|
|
|
|
conditions involving pipes and child processes with error messages
|
|
|
|
|
such as <literal>open2: open(GLOB(0x180b2e4), >&=9) failed: Bad
|
|
|
|
|
file descriptor at /nix/bin/nix-pull line 77</literal> (issue
|
|
|
|
|
<literal>NIX-14</literal>).</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</para>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-22 14:23:22 +02:00
|
|
|
|
<section><title>Release 0.9.1 (September 20, 2005)</title>
|
|
|
|
|
|
|
|
|
|
<para>This bug fix release addresses a problem with the ATerm library
|
|
|
|
|
when the <option>--with-aterm</option> flag in
|
|
|
|
|
<command>configure</command> was <emphasis>not</emphasis> used.</para>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-16 13:28:29 +02:00
|
|
|
|
<section><title>Release 0.9 (September 16, 2005)</title>
|
2005-09-14 20:50:45 +02:00
|
|
|
|
|
|
|
|
|
<para>NOTE: this version of Nix uses Berkeley DB 4.3 instead of 4.2.
|
|
|
|
|
The database is upgraded automatically, but you should be careful not
|
|
|
|
|
to use old versions of Nix that still use Berkeley DB 4.2. In
|
|
|
|
|
particular, if you use a Nix installed through Nix, you should run
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-store --clear-substitutes</screen>
|
|
|
|
|
|
|
|
|
|
first.</para>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Unpacking of patch sequences is much faster now
|
|
|
|
|
since we no longer do redundant unpacking and repacking of
|
|
|
|
|
intermediate paths.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Nix now uses Berkeley DB 4.3.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>The <function>derivation</function> primitive is
|
|
|
|
|
lazier. Attributes of dependent derivations can mutually refer to
|
|
|
|
|
each other (as long as there are no data dependencies on the
|
|
|
|
|
<varname>outPath</varname> and <varname>drvPath</varname> attributes
|
|
|
|
|
computed by <function>derivation</function>).</para>
|
|
|
|
|
|
|
|
|
|
<para>For example, the expression <literal>derivation
|
|
|
|
|
attrs</literal> now evaluates to (essentially)
|
|
|
|
|
|
|
|
|
|
<programlisting>
|
|
|
|
|
attrs // {
|
|
|
|
|
type = "derivation";
|
|
|
|
|
outPath = derivation! attrs;
|
|
|
|
|
drvPath = derivation! attrs;
|
|
|
|
|
}</programlisting>
|
|
|
|
|
|
|
|
|
|
where <function>derivation!</function> is a primop that does the
|
|
|
|
|
actual derivation instantiation (i.e., it does what
|
|
|
|
|
<function>derivation</function> used to do). The advantage is that
|
|
|
|
|
it allows commands such as <command>nix-env -qa</command> and
|
|
|
|
|
<command>nix-env -i</command> to be much faster since they no longer
|
|
|
|
|
need to instantiate all derivations, just the
|
|
|
|
|
<varname>name</varname> attribute.</para>
|
|
|
|
|
|
|
|
|
|
<para>Also, it allows derivations to cyclically reference each
|
|
|
|
|
other, for example,
|
|
|
|
|
|
|
|
|
|
<programlisting>
|
|
|
|
|
webServer = derivation {
|
|
|
|
|
...
|
|
|
|
|
hostName = "svn.cs.uu.nl";
|
|
|
|
|
services = [svnService];
|
|
|
|
|
};
|
|
|
|
|
 
|
|
|
|
|
svnService = derivation {
|
|
|
|
|
...
|
|
|
|
|
hostName = webServer.hostName;
|
|
|
|
|
};</programlisting>
|
|
|
|
|
|
|
|
|
|
Previously, this would yield a black hole (infinite recursion).</para>
|
|
|
|
|
|
|
|
|
|
</listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><command>nix-build</command> now defaults to using
|
|
|
|
|
<filename>./default.nix</filename> if no Nix expression is
|
|
|
|
|
specified.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><command>nix-instantiate</command>, when applied to
|
|
|
|
|
a Nix expression that evaluates to a function, will call the
|
|
|
|
|
function automatically if all its arguments have
|
|
|
|
|
defaults.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Nix now uses libtool to build dynamic libraries.
|
|
|
|
|
This reduces the size of executables.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>A new list concatenation operator
|
|
|
|
|
<literal>++</literal>. For example, <literal>[1 2 3] ++ [4 5
|
|
|
|
|
6]</literal> evaluates to <literal>[1 2 3 4 5
|
|
|
|
|
6]</literal>.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Some currently undocumented primops to support
|
|
|
|
|
low-level build management using Nix (i.e., using Nix as a Make
|
|
|
|
|
replacement). See the commit messages for <literal>r3578</literal>
|
|
|
|
|
and <literal>r3580</literal>.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Various bug fixes and performance
|
|
|
|
|
improvements.</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-16 13:28:29 +02:00
|
|
|
|
<section><title>Release 0.8.1 (April 13, 2005)</title>
|
|
|
|
|
|
|
|
|
|
<para>This is a bug fix release.</para>
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Patch downloading was broken.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>The garbage collector would not delete paths that
|
|
|
|
|
had references from invalid (but substitutable)
|
|
|
|
|
paths.</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-14 20:50:45 +02:00
|
|
|
|
<section><title>Release 0.8 (April 11, 2005)</title>
|
|
|
|
|
|
|
|
|
|
<para>NOTE: the hashing scheme in Nix 0.8 changed (as detailed below).
|
|
|
|
|
As a result, <command>nix-pull</command> manifests and channels built
|
|
|
|
|
for Nix 0.7 and below will now work anymore. However, the Nix
|
|
|
|
|
expression language has not changed, so you can still build from
|
|
|
|
|
source. Also, existing user environments continue to work. Nix 0.8
|
|
|
|
|
will automatically upgrade the database schema of previous
|
|
|
|
|
installations when it is first run.</para>
|
|
|
|
|
|
|
|
|
|
<para>If you get the error message
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
you have an old-style manifest `/nix/var/nix/manifests/[...]'; please
|
|
|
|
|
delete it</screen>
|
|
|
|
|
|
|
|
|
|
you should delete previously downloaded manifests:
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ rm /nix/var/nix/manifests/*</screen>
|
|
|
|
|
|
|
|
|
|
If <command>nix-channel</command> gives the error message
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
manifest `http://catamaran.labs.cs.uu.nl/dist/nix/channels/[channel]/MANIFEST'
|
|
|
|
|
is too old (i.e., for Nix <= 0.7)</screen>
|
|
|
|
|
|
|
|
|
|
then you should unsubscribe from the offending channel
|
|
|
|
|
(<command>nix-channel --remove
|
|
|
|
|
<replaceable>URL</replaceable></command>; leave out
|
|
|
|
|
<literal>/MANIFEST</literal>), and subscribe to the same URL, with
|
|
|
|
|
<literal>channels</literal> replaced by <literal>channels-v3</literal>
|
2006-10-02 13:50:55 +02:00
|
|
|
|
(e.g., <link
|
|
|
|
|
xlink:href='http://catamaran.labs.cs.uu.nl/dist/nix/channels-v3/nixpkgs-unstable'
|
|
|
|
|
/>).</para>
|
2005-09-14 20:50:45 +02:00
|
|
|
|
|
|
|
|
|
<para>Nix 0.8 has the following improvements:
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>The cryptographic hashes used in store paths are now
|
|
|
|
|
160 bits long, but encoded in base-32 so that they are still only 32
|
|
|
|
|
characters long (e.g.,
|
2006-10-02 13:50:55 +02:00
|
|
|
|
<filename>/nix/store/csw87wag8bqlqk7ipllbwypb14xainap-atk-1.9.0</filename>).
|
|
|
|
|
(This is actually a 160 bit truncation of a SHA-256
|
|
|
|
|
hash.)</para></listitem>
|
2005-09-14 20:50:45 +02:00
|
|
|
|
|
|
|
|
|
<listitem><para>Big cleanups and simplifications of the basic store
|
|
|
|
|
semantics. The notion of "closure store expressions" is gone (and
|
|
|
|
|
so is the notion of "successors"); the file system references of a
|
|
|
|
|
store path are now just stored in the database.</para>
|
|
|
|
|
|
|
|
|
|
<para>For instance, given any store path, you can query its closure:
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-store -qR $(which firefox)
|
|
|
|
|
... lots of paths ...</screen>
|
|
|
|
|
|
|
|
|
|
Also, Nix now remembers for each store path the derivation that
|
|
|
|
|
built it (the "deriver"):
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-store -qR $(which firefox)
|
|
|
|
|
/nix/store/4b0jx7vq80l9aqcnkszxhymsf1ffa5jd-firefox-1.0.1.drv</screen>
|
|
|
|
|
|
|
|
|
|
So to see the build-time dependencies, you can do
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-store -qR $(nix-store -qd $(which firefox))</screen>
|
|
|
|
|
|
|
|
|
|
or, in a nicer format:
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-store -q --tree $(nix-store -qd $(which firefox))</screen>
|
|
|
|
|
|
|
|
|
|
</para>
|
|
|
|
|
|
|
|
|
|
<para>File system references are also stored in reverse. For
|
|
|
|
|
instance, you can query all paths that directly or indirectly use a
|
|
|
|
|
certain Glibc:
|
|
|
|
|
|
|
|
|
|
<screen>
|
2005-12-13 22:04:48 +01:00
|
|
|
|
$ nix-store -q --referrers-closure \
|
2005-09-14 20:50:45 +02:00
|
|
|
|
/nix/store/8lz9yc6zgmc0vlqmn2ipcpkjlmbi51vv-glibc-2.3.4</screen>
|
|
|
|
|
|
|
|
|
|
</para>
|
|
|
|
|
|
|
|
|
|
</listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>The concept of fixed-output derivations has been
|
|
|
|
|
formalised. Previously, functions such as
|
|
|
|
|
<function>fetchurl</function> in Nixpkgs used a hack (namely,
|
|
|
|
|
explicitly specifying a store path hash) to prevent changes to, say,
|
|
|
|
|
the URL of the file from propagating upwards through the dependency
|
|
|
|
|
graph, causing rebuilds of everything. This can now be done cleanly
|
|
|
|
|
by specifying the <varname>outputHash</varname> and
|
|
|
|
|
<varname>outputHashAlgo</varname> attributes. Nix itself checks
|
|
|
|
|
that the content of the output has the specified hash. (This is
|
|
|
|
|
important for maintaining certain invariants necessary for future
|
|
|
|
|
work on secure shared stores.)</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>One-click installation :-) It is now possible to
|
|
|
|
|
install any top-level component in Nixpkgs directly, through the web
|
2006-10-02 13:50:55 +02:00
|
|
|
|
- see, e.g., <link
|
|
|
|
|
xlink:href='http://catamaran.labs.cs.uu.nl/dist/nixpkgs-0.8/' />.
|
|
|
|
|
All you have to do is associate
|
2005-09-14 20:50:45 +02:00
|
|
|
|
<filename>/nix/bin/nix-install-package</filename> with the MIME type
|
|
|
|
|
<literal>application/nix-package</literal> (or the extension
|
|
|
|
|
<filename>.nixpkg</filename>), and clicking on a package link will
|
|
|
|
|
cause it to be installed, with all appropriate dependencies. If you
|
|
|
|
|
just want to install some specific application, this is easier than
|
|
|
|
|
subscribing to a channel.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><command>nix-store -r
|
|
|
|
|
<replaceable>PATHS</replaceable></command> now builds all the
|
|
|
|
|
derivations PATHS in parallel. Previously it did them sequentially
|
|
|
|
|
(though exploiting possible parallelism between subderivations).
|
|
|
|
|
This is nice for build farms.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><command>nix-channel</command> has new operations
|
|
|
|
|
<option>--list</option> and
|
|
|
|
|
<option>--remove</option>.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>New ways of installing components into user
|
|
|
|
|
environments:
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Copy from another user environment:
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-env -i --from-profile .../other-profile firefox</screen>
|
|
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|
|
|
|
|
|
|
</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Install a store derivation directly (bypassing the
|
|
|
|
|
Nix expression language entirely):
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-env -i /nix/store/z58v41v21xd3...-aterm-2.3.1.drv</screen>
|
|
|
|
|
|
|
|
|
|
(This is used to implement <command>nix-install-package</command>,
|
|
|
|
|
which is therefore immune to evolution in the Nix expression
|
|
|
|
|
language.)</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Install an already built store path directly:
|
|
|
|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-env -i /nix/store/hsyj5pbn0d9i...-aterm-2.3.1</screen>
|
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|
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|
|
</para></listitem>
|
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|
|
<listitem><para>Install the result of a Nix expression specified
|
|
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|
|
as a command-line argument:
|
|
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|
|
|
|
|
|
|
<screen>
|
|
|
|
|
$ nix-env -f .../i686-linux.nix -i -E 'x: x.firefoxWrapper'</screen>
|
|
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|
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|
|
The difference with the normal installation mode is that
|
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|
|
<option>-E</option> does not use the <varname>name</varname>
|
|
|
|
|
attributes of derivations. Therefore, this can be used to
|
|
|
|
|
disambiguate multiple derivations with the same
|
|
|
|
|
name.</para></listitem>
|
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|
|
|
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|
|
</itemizedlist></para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>A hash of the contents of a store path is now stored
|
|
|
|
|
in the database after a succesful build. This allows you to check
|
|
|
|
|
whether store paths have been tampered with: <command>nix-store
|
|
|
|
|
--verify --check-contents</command>.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem>
|
|
|
|
|
|
|
|
|
|
<para>Implemented a concurrent garbage collector. It is now
|
|
|
|
|
always safe to run the garbage collector, even if other Nix
|
|
|
|
|
operations are happening simultaneously.</para>
|
|
|
|
|
|
|
|
|
|
<para>However, there can still be GC races if you use
|
|
|
|
|
<command>nix-instantiate</command> and <command>nix-store
|
|
|
|
|
--realise</command> directly to build things. To prevent races,
|
|
|
|
|
use the <option>--add-root</option> flag of those commands.</para>
|
|
|
|
|
|
|
|
|
|
</listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>The garbage collector now finally deletes paths in
|
|
|
|
|
the right order (i.e., topologically sorted under the
|
|
|
|
|
<quote>references</quote> relation), thus making it safe to
|
|
|
|
|
interrupt the collector without risking a store that violates the
|
|
|
|
|
closure invariant.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Likewise, the substitute mechanism now downloads
|
|
|
|
|
files in the right order, thus preserving the closure invariant at
|
|
|
|
|
all times.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>The result of <command>nix-build</command> is now
|
|
|
|
|
registered as a root of the garbage collector. If the
|
|
|
|
|
<filename>./result</filename> link is deleted, the GC root
|
|
|
|
|
disappears automatically.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem>
|
|
|
|
|
|
|
|
|
|
<para>The behaviour of the garbage collector can be changed
|
|
|
|
|
globally by setting options in
|
|
|
|
|
<filename>/nix/etc/nix/nix.conf</filename>.
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para><literal>gc-keep-derivations</literal> specifies
|
|
|
|
|
whether deriver links should be followed when searching for live
|
|
|
|
|
paths.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><literal>gc-keep-outputs</literal> specifies
|
|
|
|
|
whether outputs of derivations should be followed when searching
|
|
|
|
|
for live paths.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><literal>env-keep-derivations</literal>
|
|
|
|
|
specifies whether user environments should store the paths of
|
|
|
|
|
derivations when they are added (thus keeping the derivations
|
|
|
|
|
alive).</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>New <command>nix-env</command> query flags
|
|
|
|
|
<option>--drv-path</option> and
|
|
|
|
|
<option>--out-path</option>.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><command>fetchurl</command> allows SHA-1 and SHA-256
|
|
|
|
|
in addition to MD5. Just specify the attribute
|
|
|
|
|
<varname>sha1</varname> or <varname>sha256</varname> instead of
|
|
|
|
|
<varname>md5</varname>.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Manual updates.</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</para>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-14 20:50:45 +02:00
|
|
|
|
<section><title>Release 0.7 (January 12, 2005)</title>
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Binary patching. When upgrading components using
|
|
|
|
|
pre-built binaries (through nix-pull / nix-channel), Nix can
|
|
|
|
|
automatically download and apply binary patches to already installed
|
|
|
|
|
components instead of full downloads. Patching is "smart": if there
|
|
|
|
|
is a *sequence* of patches to an installed component, Nix will use
|
|
|
|
|
it. Patches are currently generated automatically between Nixpkgs
|
|
|
|
|
(pre-)releases.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Simplifications to the substitute
|
|
|
|
|
mechanism.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Nix-pull now stores downloaded manifests in
|
2006-10-02 13:50:55 +02:00
|
|
|
|
<filename>/nix/var/nix/manifests</filename>.</para></listitem>
|
2005-09-14 20:50:45 +02:00
|
|
|
|
|
|
|
|
|
<listitem><para>Metadata on files in the Nix store is canonicalised
|
|
|
|
|
after builds: the last-modified timestamp is set to 0 (00:00:00
|
|
|
|
|
1/1/1970), the mode is set to 0444 or 0555 (readable and possibly
|
|
|
|
|
executable by all; setuid/setgid bits are dropped), and the group is
|
|
|
|
|
set to the default. This ensures that the result of a build and an
|
|
|
|
|
installation through a substitute is the same; and that timestamp
|
|
|
|
|
dependencies are revealed.</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-14 20:50:45 +02:00
|
|
|
|
<section><title>Release 0.6 (November 14, 2004)</title>
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem>
|
|
|
|
|
<para>Rewrite of the normalisation engine.
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Multiple builds can now be performed in parallel
|
|
|
|
|
(option <option>-j</option>).</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Distributed builds. Nix can now call a shell
|
|
|
|
|
script to forward builds to Nix installations on remote
|
|
|
|
|
machines, which may or may not be of the same platform
|
|
|
|
|
type.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Option <option>--fallback</option> allows
|
|
|
|
|
recovery from broken substitutes.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Option <option>--keep-going</option> causes
|
|
|
|
|
building of other (unaffected) derivations to continue if one
|
|
|
|
|
failed.</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</para>
|
|
|
|
|
|
|
|
|
|
</listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Improvements to the garbage collector (i.e., it
|
|
|
|
|
should actually work now).</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Setuid Nix installations allow a Nix store to be
|
|
|
|
|
shared among multiple users.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Substitute registration is much faster
|
|
|
|
|
now.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>A utility <command>nix-build</command> to build a
|
|
|
|
|
Nix expression and create a symlink to the result int the current
|
|
|
|
|
directory; useful for testing Nix derivations.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Manual updates.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem>
|
|
|
|
|
|
|
|
|
|
<para><command>nix-env</command> changes:
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Derivations for other platforms are filtered out
|
|
|
|
|
(which can be overriden using
|
|
|
|
|
<option>--system-filter</option>).</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><option>--install</option> by default now
|
|
|
|
|
uninstall previous derivations with the same
|
|
|
|
|
name.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para><option>--upgrade</option> allows upgrading to a
|
|
|
|
|
specific version.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>New operation
|
|
|
|
|
<option>--delete-generations</option> to remove profile
|
|
|
|
|
generations (necessary for effective garbage
|
|
|
|
|
collection).</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Nicer output (sorted,
|
|
|
|
|
columnised).</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</para>
|
|
|
|
|
|
|
|
|
|
</listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>More sensible verbosity levels all around (builder
|
|
|
|
|
output is now shown always, unless <option>-Q</option> is
|
|
|
|
|
given).</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem>
|
|
|
|
|
|
|
|
|
|
<para>Nix expression language changes:
|
|
|
|
|
|
|
|
|
|
<itemizedlist>
|
|
|
|
|
|
|
|
|
|
<listitem><para>New language construct: <literal>with
|
|
|
|
|
<replaceable>E1</replaceable>;
|
|
|
|
|
<replaceable>E2</replaceable></literal> brings all attributes
|
|
|
|
|
defined in the attribute set <replaceable>E1</replaceable> in
|
|
|
|
|
scope in <replaceable>E2</replaceable>.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Added a <function>map</function>
|
|
|
|
|
function.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Various new operators (e.g., string
|
|
|
|
|
concatenation).</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</para>
|
|
|
|
|
|
|
|
|
|
</listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Expression evaluation is much
|
|
|
|
|
faster.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>An Emacs mode for editing Nix expressions (with
|
|
|
|
|
syntax highlighting and indentation) has been
|
|
|
|
|
added.</para></listitem>
|
|
|
|
|
|
|
|
|
|
<listitem><para>Many bug fixes.</para></listitem>
|
|
|
|
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006-09-27 14:43:00 +02:00
|
|
|
|
<!--==================================================================-->
|
|
|
|
|
|
2005-09-14 20:50:45 +02:00
|
|
|
|
<section><title>Release 0.5 and earlier</title>
|
|
|
|
|
|
|
|
|
|
<para>Please refer to the Subversion commit log messages.</para>
|
|
|
|
|
|
|
|
|
|
</section>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</article>
|