Update the release notes

This commit is contained in:
Eelco Dolstra 2012-05-09 19:05:30 -04:00
parent 0c4c8f7a9d
commit a58efdb69b

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@ -10,7 +10,8 @@
<section xml:id="ssec-relnotes-1.0"><title>Release 1.0 (TBA)</title>
<para>This release has the following improvements:</para>
<para>There have been numerous improvements and bug fixes since the
previous release. Here are the most significant:</para>
<itemizedlist>
@ -22,6 +23,86 @@
option.</para>
</listitem>
<listitem>
<para>Nix now uses SQLite for its database. This is faster and
more flexible than the old <emphasis>ad hoc</emphasis> format.
SQLite is also used to cache the manifests in
<filename>/nix/var/nix/manifests</filename>, resulting in a
significant speedup.</para>
</listitem>
<listitem>
<para>Nix now has an search path for expressions. The search path
is set using the environment variable <envar>NIX_PATH</envar> and
the <option>-I</option> command line option. In Nix expressions,
paths between angle brackets are used to specify files that must
be looked up in the search path. For instance, the expression
<literal>&lt;nixpkgs/default.nix></literal> looks for a file
<filename>nixpkgs/default.nix</filename> relative to every element
in the search path.</para>
</listitem>
<listitem>
<para>The new command <command>nix-build --run-env</command>
builds all dependencies of a derivation, then starts a shell in an
environment containing all variables from the derivation. This is
useful for reproducing the environment of a derivation for
development.</para>
</listitem>
<listitem>
<para>The new command <command>nix-store --verify-path</command>
verifies that the contents of a store path have not
changed.</para>
</listitem>
<listitem>
<para>The new command <command>nix-store --print-env</command>
prints out the environment of a derivation in a format that can be
evaluated by a shell.</para>
</listitem>
<listitem>
<para>Attribute names can now be arbitrary strings. For instance,
you can write <literal>{ "foo-1.2" = …; "bla bla" = …; }."bla
bla"</literal>.</para>
</listitem>
<listitem>
<para>Attribute selection can now provide a default value using
the <literal>or</literal> operator. For instance, the expression
<literal>x.y.z or e</literal> evaluates to the attribute
<literal>x.y.z</literal> if it exists, and <literal>e</literal>
otherwise.</para>
</listitem>
<listitem>
<para>The right-hand side of the <literal>?</literal> operator can
now be an attribute path, e.g., <literal>attrs ?
a.b.c</literal>.</para>
</listitem>
<listitem>
<para>On Linux, Nix will now make files in the Nix store immutable
on filesystems that support it. This prevents accidental
modification of files in the store by the root user.</para>
</listitem>
<listitem>
<para>Nix has preliminary support for derivations with multiple
outputs. This is useful because it allows parts of a package to
be deployed and garbage-collected separately. For instance,
development parts of a package such as header files or static
libraries would typically not be part of the closure of an
application, resulting in reduced disk usage and installation
time.</para>
</listitem>
<listitem>
<para>The Nix store garbage collector is faster and holds the
global lock for a shorter amount of time.</para>
</listitem>
<listitem>
<para>The option <option>--timeout</option> (corresponding to the
configuration setting <literal>build-timeout</literal>) allows you
@ -33,19 +114,8 @@
</listitem>
<listitem>
<para>TODO: “or” keyword.</para>
</listitem>
<listitem>
<para>TODO: Nix expression search path (<literal>import &lt;foo/bar.nix></literal>).</para>
</listitem>
<listitem>
<para>TODO: <command>nix-store --verify-path</command> command.</para>
</listitem>
<listitem>
<para>TODO: <command>nix-store --print-env</command> command.</para>
<para>Nix development has moved to GitHub (<link
xlink:href="https://github.com/NixOS/nix" />).</para>
</listitem>
</itemizedlist>