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143 lines
4.8 KiB
XML
143 lines
4.8 KiB
XML
<chapter>
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<title>Installation</title>
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<sect1>
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<title>Obtaining Nix</title>
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<para>
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The easiest way to obtain Nix is to download a <ulink
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url='http://www.cs.uu.nl/groups/ST/Trace/Nix'>source
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distribution.</ulink>
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</para>
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<para>
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Alternatively, the most recent sources of Nix can be obtained from its
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<ulink url='https://svn.cs.uu.nl:12443/repos/trace/nix/trunk'>Subversion
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repository</ulink>. For example, the following command will check out
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the latest revision into a directory called <filename>nix</filename>:
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</para>
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<screen>
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$ svn checkout https://svn.cs.uu.nl:12443/repos/trace/nix/trunk nix</screen>
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<para>
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Likewise, specific releases can be obtained from the <ulink
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url='https://svn.cs.uu.nl:12443/repos/trace/nix/tags'>tags
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directory</ulink> of the repository. If you don't have Subversion, you
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can also download an automatically generated <ulink
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url='https://svn.cs.uu.nl:12443/dist/trace/'>compressed
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tar-file</ulink> of the head revision of the trunk.
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</para>
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</sect1>
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<sect1>
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<title>Prerequisites</title>
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<para>
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A fairly recent version of GCC/G++ is required. Version 2.95 and higher
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should work.
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</para>
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<para>
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To rebuild this manual and the man-pages you need the
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<command>xmllint</command> and <command>xsltproc</command>, which are
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part of the <literal>libxml2</literal> and <literal>libxslt</literal>
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packages, respectively. You also need the <ulink
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url='http://docbook.sourceforge.net/projects/xsl/'>DocBook XSL
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stylesheets</ulink> and optionally the <ulink
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url='http://www.oasis-open.org/docbook/xml/4.2/docbook-xml-4.2.zip'>
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DocBook XML 4.2 DTD</ulink>. Note that these are only required if you
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modify the manual sources or when you are building from the Subversion
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repository.
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</para>
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<para>
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Nix uses Sleepycat's Berkeley DB, CWI's ATerm library, and SDF parser
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library. These are included in the Nix source distribution. If you
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build from the Subversion repository, you must download them yourself and
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place them in the <filename>externals/</filename> directory. See
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<filename>externals/Makefile.am</filename> for the precise URLs of these
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packages.
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</para>
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</sect1>
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<sect1>
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<title>Building Nix</title>
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<para>
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After unpacking or checking out the Nix sources, issue the following
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commands:
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</para>
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<screen>
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$ ./configure <replaceable>options...</replaceable>
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$ make
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$ make install</screen>
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<para>
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When building from the Subversion repository, these should be preceded by
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the command:
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</para>
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<screen>
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$ autoreconf -i</screen>
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<para>
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The installation path can be specified by passing the
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<option>--prefix=<replaceable>prefix</replaceable></option> to
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<command>configure</command>. The default installation directory is
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<filename>/nix</filename>. You can change this to any location you like.
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You must have write permission to the <replaceable>prefix</replaceable>
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path.
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</para>
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<warning>
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<para>
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It is advisable <emphasis>not</emphasis> to change the installation
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prefix from its default, since doing so will in all likelihood make it
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impossible to use derivations built on other systems.
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</para>
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</warning>
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<para>
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If you want to rebuilt the documentation, pass the full path to the
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DocBook XML catalog file (<filename>docbook.cat</filename>) and to the
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DocBook XSL stylesheets using the
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<option>--with-docbook-catalog=<replaceable>path</replaceable></option>
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and <option>--with-docbook-xsl=<replaceable>path</replaceable></option>
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options.
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</para>
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</sect1>
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<sect1>
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<title>Using Nix</title>
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<para>
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To use Nix, some environment variables should be set. In particular,
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<envar>PATH</envar> should contain the directories
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<filename><replaceable>prefix</replaceable>/bin</filename> and
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<filename><replaceable>prefix</replaceable>/var/nix/links/current/bin</filename>.
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The first directory contains the Nix tools themselves, while the second
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contains to the current <emphasis>user environment</emphasis> (an
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automatically generated package consisting of symlinks to installed
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packages). The simplest way to set the required environment variables is
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to include the file
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<filename><replaceable>prefix</replaceable>/etc/profile.d/nix.sh</filename>
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in your <filename>~/.bashrc</filename> (or similar), like this:
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</para>
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<screen>
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. <replaceable>prefix</replaceable>/etc/profile.d/nix.sh</screen>
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</sect1>
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</chapter>
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<!--
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local variables:
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sgml-parent-document: ("book.xml" "chapter")
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end:
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-->
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