forked from lix-project/lix
Manual updates
This commit is contained in:
Eelco Dolstra
parent
2b00e6990c
commit
8a08813d6c
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@ -15,11 +15,11 @@
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<listitem><para>Linux (particularly on x86, x86_64, and
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PowerPC).</para></listitem>
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<listitem><para>Mac OS X, both on Intel and
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PowerPC.</para></listitem>
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<listitem><para>Mac OS X.</para></listitem>
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<listitem><para>FreeBSD (only tested on Intel).</para></listitem>
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<!--
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<listitem><para>Windows through <link
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xlink:href="http://www.cygwin.com/">Cygwin</link>.</para>
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@ -28,6 +28,7 @@
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partition.</para></warning>
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</listitem>
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-->
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</itemizedlist>
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@ -47,7 +48,7 @@ for Red Hat, SuSE, and Fedora Core are also available.</para>
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<para>Alternatively, the most recent sources of Nix can be obtained
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from its <link
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xlink:href="https://github.com/NixOS/nix">git
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xlink:href="https://github.com/NixOS/nix">Git
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repository</link>. For example, the following command will check out
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the latest revision into a directory called
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<filename>nix</filename>:</para>
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@ -56,8 +57,8 @@ the latest revision into a directory called
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$ git clone https://github.com/NixOS/nix</screen>
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<para>Likewise, specific releases can be obtained from the <link
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xlink:href="https://github.com/NixOS/nix/tags">tags
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</link> of the repository.</para>
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xlink:href="https://github.com/NixOS/nix/tags">tags</link> of the
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repository.</para>
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</section>
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@ -85,9 +86,9 @@ installed, including development headers and libraries. If your
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distribution does not provide these, you can obtain bzip2 from <link
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xlink:href="http://www.bzip.org/"/>.</para>
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<para>Nix requires the SQLite embedded database library. If your
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distribution does not provide it, please install it from <link
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xlink:href="http://www.sqlite.org/" />.</para>
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<para>Nix requires the SQLite embedded database library, version
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3.6.19 or higher. If your distribution does not provide it, please
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install it from <link xlink:href="http://www.sqlite.org/" />.</para>
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<para>Nix requires the Perl DBI and DBD::SQLite libraries, which are
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available from <link xlink:href="http://search.cpan.org/">CPAN</link>
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@ -109,21 +110,20 @@ xlink:href="http://docbook.sourceforge.net/projects/xsl/">DocBook XSL
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stylesheets</link> and optionally the <link
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xlink:href="http://www.docbook.org/schemas/5x"> DocBook 5.0 RELAX NG
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schemas</link>. Note that these are only required if you modify the
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manual sources or when you are building from the Subversion
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manual sources or when you are building from the Git
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repository.</para>
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<para>To build the parser, very <emphasis>recent</emphasis> versions
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of Bison and Flex are required. (This is because Nix needs GLR
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support in Bison and reentrancy support in Flex.) For Bison, you need
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version 2.3 or higher (1.875 does <emphasis>not</emphasis> work),
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which can be obtained from
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the <link xlink:href="ftp://alpha.gnu.org/pub/gnu/bison">GNU FTP
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server</link>. For Flex, you need version 2.5.33, which is available
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on <link xlink:href="http://lex.sourceforge.net/">SourceForge</link>.
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Slightly older versions may also work, but ancient versions like the
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ubiquitous 2.5.4a won't. Note that these are only required if you
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modify the parser or when you are building from the Subversion
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repository.</para>
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which can be obtained from the <link
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xlink:href="ftp://alpha.gnu.org/pub/gnu/bison">GNU FTP server</link>.
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For Flex, you need version 2.5.33, which is available on <link
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xlink:href="http://lex.sourceforge.net/">SourceForge</link>. Slightly
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older versions may also work, but ancient versions like the ubiquitous
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2.5.4a won't. Note that these are only required if you modify the
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parser or when you are building from the Git repository.</para>
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</section>
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@ -140,8 +140,8 @@ $ make install</screen>
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</para>
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<para>When building from the Subversion repository, these should be
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preceded by the command:
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<para>When building from the Git repository, these should be preceded
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by the command:
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<screen>
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$ ./bootstrap.sh</screen>
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@ -17,10 +17,10 @@ store</emphasis>, usually the directory
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subdirectory such as
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<programlisting>
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/nix/store/r8vvq9kq18pz08v249h8my6r9vs7s0n3-firefox-2.0.0.1/
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/nix/store/nlc4z5y1hm8w9s8vm6m1f5hy962xjmp5-firefox-12.0
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</programlisting>
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where <literal>r8vvq9kq…</literal> is a unique identifier for the
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where <literal>nlc4z5…</literal> is a unique identifier for the
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package that captures all its dependencies (it’s a cryptographic hash
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of the package’s build dependency graph). This enables many powerful
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features.</para>
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@ -72,15 +72,14 @@ sounds risky, but it works extremely well.</para>
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<simplesect><title>Multi-user support</title>
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<para>Starting at version 0.11, Nix has multi-user support. This
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means that non-privileged users can securely install software. Each
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user can have a different <emphasis>profile</emphasis>, a set of
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packages in the Nix store that appear in the user’s
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<envar>PATH</envar>. If a user installs a package that another user
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has already installed previously, the package won’t be built or
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downloaded a second time. At the same time, it is not possible for
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one user to inject a Trojan horse into a package that might be used by
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another user.</para>
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<para>Nix has multi-user support. This means that non-privileged
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users can securely install software. Each user can have a different
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<emphasis>profile</emphasis>, a set of packages in the Nix store that
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appear in the user’s <envar>PATH</envar>. If a user installs a
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package that another user has already installed previously, the
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package won’t be built or downloaded a second time. At the same time,
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it is not possible for one user to inject a Trojan horse into a
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package that might be used by another user.</para>
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<!--
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<para>More details can be found in Section 3 of our <a
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@ -264,8 +263,10 @@ xlink:href="http://www.cs.uu.nl/wiki/Trace/WebHome">TraCE
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project</link> (2003-2008). The project was funded by the Software
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Engineering Research Program <link
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xlink:href="http://www.jacquard.nl/">Jacquard</link> to improve the
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support for variability in software systems. Further funding is now
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provided by the NIRICT LaQuSo Build Farm project.</para>
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support for variability in software systems. Further funding was
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provided by the NIRICT LaQuSo Build Farm project. Development is
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currently supported by <link
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xlink:href="http://www.logicblox.com/">LogicBlox</link>.</para>
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</section>
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@ -275,7 +276,7 @@ provided by the NIRICT LaQuSo Build Farm project.</para>
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<para>This manual tells you how to install and use Nix and how to
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write Nix expressions for software not already in the Nix Packages
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collection. It also discusses some advanced topics, such as setting
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up a Nix-based build farm.</para>
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up distributed multi-platform building.</para>
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</section>
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@ -315,13 +316,12 @@ Upgrading in a Purely Functional Component Deployment Model
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paper <citetitle
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xlink:href='http://www.st.ewi.tudelft.nl/~dolstra/pubs/servicecm-scm12-final.pdf'>
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Service Configuration Management</citetitle> shows how services (e.g.,
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web servers) can be deployed and managed through Nix. A short
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overview of NixOS is given in the HotOS XI paper <citetitle
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xlink:href="http://www.st.ewi.tudelft.nl/~dolstra/pubs/hotos-final.pdf">Purely
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Functional System Configuration Management</citetitle>. The Nix
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homepage has <link
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xlink:href="http://nixos.org/docs/papers.html">an up-to-date list
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of Nix-related papers</link>.</para>
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web servers) can be deployed and managed through Nix. An overview of
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NixOS is given in the JFP article <citetitle
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xlink:href="http://www.st.ewi.tudelft.nl/~dolstra/pubs/nixos-jfp-final.pdf">NixOS:
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A Purely Functional Linux Distribution</citetitle>. The Nix homepage
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has <link xlink:href="http://nixos.org/docs/papers.html">an up-to-date
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list of Nix-related papers</link>.</para>
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<para>Nix is the subject of Eelco Dolstra’s PhD thesis <citetitle
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xlink:href="http://igitur-archive.library.uu.nl/dissertations/2006-0118-200031/index.htm">The
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@ -5,8 +5,7 @@
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<title>Nix User's Guide</title>
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<subtitle>Draft (Version <xi:include href="version.txt"
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parse="text" />)</subtitle>
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<edition>Version <xi:include href="version.txt" parse="text" /></edition>
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<author>
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<personname>
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@ -24,7 +23,7 @@
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<holder>Eelco Dolstra</holder>
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</copyright>
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<date>January 2012</date>
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<date>May 2012</date>
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</info>
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@ -11,9 +11,9 @@ to the following chapters.</para>
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<orderedlist>
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<listitem><para>Download a source tarball, RPM or Deb from <link
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xlink:href='http://nixos.org/'/>. Build source distributions using
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the regular sequence:
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<listitem><para>Download a source tarball or RPM or Debian/Ubuntu
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package from <link xlink:href='http://nixos.org/'/>. Build source
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distributions using the regular sequence:
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<screen>
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$ tar xvfj nix-<replaceable>version</replaceable>.tar.bz2
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@ -41,8 +41,7 @@ file).</para></listitem>
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<listitem><para>Subscribe to the Nix Packages channel.
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<screen>
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$ nix-channel --add \
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http://nixos.org/releases/nixpkgs/channels/nixpkgs-unstable</screen>
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$ nix-channel --add http://nixos.org/releases/nixpkgs/channels/nixpkgs-unstable</screen>
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</para></listitem>
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@ -108,10 +107,10 @@ numbers).</para></listitem>
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<listitem><para>You can also install specific packages directly from
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your web browser. For instance, you can go to <link
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xlink:href="http://hydra.nixos.org/jobset/nixpkgs/trunk/channel/latest" />
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and click on any link for the individual packages for your platform.
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Associate <literal>application/nix-package</literal> with the program
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<filename>/nix/bin/nix-install-package</filename>. A window should
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xlink:href="http://hydra.nixos.org/jobset/nixpkgs/trunk/channel/latest"
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/> and click on any link for the individual packages for your
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platform. Associate <literal>application/nix-package</literal> with
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the program <command>nix-install-package</command>. A window should
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appear asking you whether it’s okay to install the package. Say
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<literal>Y</literal>. The package and all its dependencies will be
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installed.</para></listitem>
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|
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@ -234,7 +234,6 @@ div.glosslist dt
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span.command strong
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{
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font-family: monospace;
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font-weight: normal;
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color: #400000;
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}
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@ -249,3 +248,8 @@ table
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border-collapse: collapse;
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box-shadow: 0.4em 0.4em 0.5em #e0e0e0;
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}
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div.affiliation
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{
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font-style: italic;
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}
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@ -11,6 +11,13 @@ the things that tell Nix how to build packages. It starts with a
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simple example (a Nix expression for GNU Hello), and then moves
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on to a more in-depth look at the Nix expression language.</para>
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<note><para>This chapter is mostly about the Nix expression language.
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For more extensive information on adding packages to the Nix Packages
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collection (such as functions in the standard environment and coding
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conventions), please consult <link
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xlink:href="http://hydra.nixos.org/job/nixpkgs/trunk/tarball/latest/download-by-type/doc/manual">its
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manual</link>.</para></note>
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<section><title>A simple Nix expression</title>
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@ -315,15 +322,15 @@ error check.</para>
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rec { <co xml:id='ex-hello-composition-co-1' />
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hello = (import ../applications/misc/hello/ex-1 <co xml:id='ex-hello-composition-co-2' />) { <co xml:id='ex-hello-composition-co-3' />
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hello = import ../applications/misc/hello/ex-1 <co xml:id='ex-hello-composition-co-2' /> { <co xml:id='ex-hello-composition-co-3' />
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inherit fetchurl stdenv perl;
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};
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perl = (import ../development/interpreters/perl) { <co xml:id='ex-hello-composition-co-4' />
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perl = import ../development/interpreters/perl { <co xml:id='ex-hello-composition-co-4' />
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inherit fetchurl stdenv;
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};
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fetchurl = (import ../build-support/fetchurl) {
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fetchurl = import ../build-support/fetchurl {
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inherit stdenv; ...
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};
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@ -390,6 +397,23 @@ some fragments of
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<varname>stdenv.mkDerivation</varname> in <xref
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linkend='ex-hello-nix' />).</para>
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<note><para>Nixpkgs has a convenience function
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<function>callPackage</function> that imports and calls a
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function, filling in any missing arguments by passing the
|
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corresponding attribute from the Nixpkgs set, like this:
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<programlisting>
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hello = callPackage ../applications/misc/hello/ex-1 { };
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</programlisting>
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If necessary, you can set or override arguments:
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<programlisting>
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hello = callPackage ../applications/misc/hello/ex-1 { stdenv = myStdenv; };
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</programlisting>
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</para></note>
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</callout>
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<callout arearefs='ex-hello-composition-co-4'>
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@ -813,7 +837,23 @@ occur once.</para>
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<programlisting>
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{ a = "Foo"; b = "Bar"; }.a</programlisting>
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evaluates to <literal>"Foo"</literal>.</para>
|
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evaluates to <literal>"Foo"</literal>. It is possible to provide a
|
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default value in an attribute selection using the
|
||||
<literal>or</literal> keyword. For example,
|
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|
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<programlisting>
|
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{ a = "Foo"; b = "Bar"; }.c or "Xyzzy"</programlisting>
|
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|
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will evaluate to <literal>"Xyzzy"</literal> because there is no
|
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<varname>c</varname> attribute in the set.</para>
|
||||
|
||||
<para>You can use arbitrary string constants as attribute names by
|
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enclosing them in quotes:
|
||||
|
||||
<programlisting>
|
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{ "foo bar" = 123; "nix-1.0" = 456; }."foo bar" </programlisting>
|
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|
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This will evaluate to <literal>123</literal>.</para>
|
||||
|
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</simplesect>
|
||||
|
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|
@ -1189,12 +1229,17 @@ weakest binding).</para>
|
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</thead>
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<tbody>
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<row>
|
||||
<entry><replaceable>e</replaceable> .
|
||||
<replaceable>id</replaceable></entry>
|
||||
<entry><replaceable>e</replaceable> <literal>.</literal>
|
||||
<replaceable>attrpath</replaceable>
|
||||
[ <literal>or</literal> <replaceable>def</replaceable> ]
|
||||
</entry>
|
||||
<entry>none</entry>
|
||||
<entry>Select attribute named <replaceable>id</replaceable>
|
||||
from attribute set <replaceable>e</replaceable>. Abort
|
||||
evaluation if the attribute doesn’t exist.</entry>
|
||||
<entry>Select attribute denoted by the attribute path
|
||||
<replaceable>attrpath</replaceable> from attribute set
|
||||
<replaceable>e</replaceable>. (An attribute path is a
|
||||
dot-separated list of attribute names.) If the attribute
|
||||
doesn’t exist, return <replaceable>def</replaceable> if
|
||||
provided, otherwise abort evaluation.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> <replaceable>e2</replaceable></entry>
|
||||
|
|
@ -1203,31 +1248,31 @@ weakest binding).</para>
|
|||
argument <replaceable>e2</replaceable>.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e</replaceable> ?
|
||||
<replaceable>id</replaceable></entry>
|
||||
<entry><replaceable>e</replaceable> <literal>?</literal>
|
||||
<replaceable>attrpath</replaceable></entry>
|
||||
<entry>none</entry>
|
||||
<entry>Test whether attribute set <replaceable>e</replaceable>
|
||||
contains an attribute named <replaceable>id</replaceable>;
|
||||
contains the attribute denoted by <replaceable>attrpath</replaceable>;
|
||||
return <literal>true</literal> or
|
||||
<literal>false</literal>.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> ++ <replaceable>e2</replaceable></entry>
|
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<entry><replaceable>e1</replaceable> <literal>++</literal> <replaceable>e2</replaceable></entry>
|
||||
<entry>right</entry>
|
||||
<entry>List concatenation.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> + <replaceable>e2</replaceable></entry>
|
||||
<entry><replaceable>e1</replaceable> <literal>+</literal> <replaceable>e2</replaceable></entry>
|
||||
<entry>left</entry>
|
||||
<entry>String or path concatenation.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>! <replaceable>e</replaceable></entry>
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<entry><literal>!</literal> <replaceable>e</replaceable></entry>
|
||||
<entry>left</entry>
|
||||
<entry>Boolean negation.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> //
|
||||
<entry><replaceable>e1</replaceable> <literal>//</literal>
|
||||
<replaceable>e2</replaceable></entry>
|
||||
<entry>right</entry>
|
||||
<entry>Return an attribute set consisting of the attributes in
|
||||
|
|
@ -1236,31 +1281,31 @@ weakest binding).</para>
|
|||
precedence over the former in case of equally named attributes).</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> ==
|
||||
<entry><replaceable>e1</replaceable> <literal>==</literal>
|
||||
<replaceable>e2</replaceable></entry>
|
||||
<entry>none</entry>
|
||||
<entry>Equality.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> !=
|
||||
<entry><replaceable>e1</replaceable> <literal>!=</literal>
|
||||
<replaceable>e2</replaceable></entry>
|
||||
<entry>none</entry>
|
||||
<entry>Inequality.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> &&
|
||||
<entry><replaceable>e1</replaceable> <literal>&&</literal>
|
||||
<replaceable>e2</replaceable></entry>
|
||||
<entry>left</entry>
|
||||
<entry>Logical AND.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> ||
|
||||
<entry><replaceable>e1</replaceable> <literal>||</literal>
|
||||
<replaceable>e2</replaceable></entry>
|
||||
<entry>left</entry>
|
||||
<entry>Logical OR.</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry><replaceable>e1</replaceable> ->
|
||||
<entry><replaceable>e1</replaceable> <literal>-></literal>
|
||||
<replaceable>e2</replaceable></entry>
|
||||
<entry>none</entry>
|
||||
<entry>Logical implication (equivalent to
|
||||
|
|
@ -1662,7 +1707,17 @@ impureEnvVars = [ "http_proxy" "https_proxy" <replaceable>...</replaceable> ];
|
|||
</varlistentry>
|
||||
|
||||
|
||||
|
||||
<varlistentry><term><varname>preferLocalBuild</varname></term>
|
||||
|
||||
<listitem><para>If this attribute is set to
|
||||
<literal>true</literal> and <link
|
||||
linkend="chap-distributed-builds">distributed building is
|
||||
enabled</link>, then, if possible, perform this build locally
|
||||
instead of forwarding it to a remote machine. This is appropriate
|
||||
for trivial builders where the cost of doing a remote build would
|
||||
exceed the cost of building locally.</para></listitem>
|
||||
|
||||
</varlistentry>
|
||||
|
||||
</variablelist>
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue