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<chapter>
<title>Quick Start</title>
<para>
This chapter is for impatient people who don't like reading
documentation. For more in-depth information you are kindly
referred to <xref linkend='chap-installation' /> and <xref
linkend='chap-overview' />.
</para>
<orderedlist>
<listitem>
<para>
Download a source tarball or RPM from <ulink
url='http://www.cs.uu.nl/groups/ST/Trace/Nix'/>.
Build source distributions using the regular sequence:
<screen>
$ tar xvfj nix-<replaceable>version</replaceable>.tar.bz2
$ ./configure
$ make
$ make install <lineannotation>(as root)</lineannotation></screen>
This will install Nix in <filename>/nix</filename>. You
should also add <filename>/nix/etc/profile.d/nix.sh</filename>
to your <filename>~/.bashrc</filename> (or some other login
file).
</para>
</listitem>
<listitem>
<para>
Get some Nix expressions for pre-built packages by downloading
the latest <literal>nixpkgs</literal> distribution (from the
same location), and unpack them.
<screen>
$ wget http://<replaceable>...</replaceable>/nix/nixpkgs-<replaceable>version</replaceable>/nixpkgs-<replaceable>version</replaceable>.tar.bz2
$ tar xfj nixpkgs-<replaceable>version</replaceable>.tar.bz2</screen>
This will unpack the distribution into a directory
<filename>nixpkgs-<replaceable>version</replaceable>/</filename>.
</para>
</listitem>
<listitem>
<para>
Pull the Nix cache. This ensures that when you install
packages they are downloaded in pre-built form from the
network, rather than built from source.
<screen>
$ nix-pull http://<replaceable>...</replaceable>/nix/nixpkgs-<replaceable>version</replaceable>/</screen>
</para>
<para>
Note that currently we only pre-build for Linux on x86
platforms.
</para>
</listitem>
<listitem>
<para>
See what's available:
<screen>
$ nix-env -qaf nixpkgs-<replaceable>version</replaceable>/
MozillaFirebird-0.7
hello-2.1.1
docbook-xml-4.2
libxslt-1.1.0
<replaceable>...</replaceable></screen>
</para>
</listitem>
<listitem>
<para>
Install some packages:
<screen>
$ nix-env -iBf nixpkgs-<replaceable>version</replaceable>/ hello MozillaFirebird <replaceable>...</replaceable> </screen>
</para>
</listitem>
<listitem>
<para>
Test that they work:
<screen>
$ which hello
/home/eelco/.nix-userenv/bin/hello
$ hello
Hello, world!
$ MozillaFirebird
<lineannotation>(read Slashdot or something)</lineannotation></screen>
</para>
</listitem>
<listitem>
<para>
Uninstall a package:
<screen>
$ nix-env -e hello</screen>
</para>
</listitem>
<listitem>
<para>
If a new release of <literal>nixpkgs</literal> comes along,
you can upgrade all installed packages to the latest versions
by downloading and unpacking the new release and doing:
<screen>
$ nix-env -uBf nixpkgs-<replaceable>version</replaceable> '*'</screen>
</para>
</listitem>
<listitem>
<para>
You should periodically run the Nix garbage collector to get
rid of unused packages, since uninstalls or upgrades don't
actual delete them:
<screen>
$ nix-collect-garbage | xargs nix-store --delete</screen>
</para>
</listitem>
</orderedlist>
</chapter>
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