* Split the book.xml into several xml files.
This commit is contained in:
Eelco Dolstra
parent
469f1eba56
commit
b4f88d0ec3
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@ -2,17 +2,20 @@ DOCBOOK_DTD = /nix/current/xml/dtd/docbook
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DOCBOOK_XSL = /nix/current/xml/xsl/docbook
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XML = /usr/share/doc/packages/sp/html-xml/xml.soc
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%.is-valid: %.xml
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SOURCES = book.xml introduction.xml installation.xml nix-reference.xml \
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troubleshooting.xml bugs.xml
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book.is-valid: $(SOURCES)
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SP_CHARSET_FIXED=YES SP_ENCODING=XML \
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nsgmls -wxml -c $(XML) -c $(DOCBOOK_DTD)/docbook.cat -ges $<
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touch $@
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man1_MANS = nix.1
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man nix.1: book.is-valid
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man nix.1: $(SOURCES) book.is-valid
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xsltproc $(DOCBOOK_XSL)/manpages/docbook.xsl book.xml
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%.html: %.xml %.is-valid
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book.html: $(SOURCES) book.is-valid
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xsltproc --output book.html $(DOCBOOK_XSL)/html/docbook.xsl book.xml
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all-local: book.html
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@ -1,503 +1,46 @@
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<?xml version="1.0"?>
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<!DOCTYPE book SYSTEM "/nix/current/xml/dtd/docbook/docbookx.dtd"
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[
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<!ENTITY introduction SYSTEM "introduction.xml">
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<!ENTITY installation SYSTEM "installation.xml">
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<!ENTITY nix-reference SYSTEM "nix-reference.xml">
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<!ENTITY troubleshooting SYSTEM "troubleshooting.xml">
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<!ENTITY bugs SYSTEM "bugs.xml">
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]>
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<book>
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<title>Nix: The Manual</title>
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<!--======================================================================-->
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<chapter>
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<title>Introduction</title>
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<sect1>
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<title>The problem space</title>
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<para>
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Nix is a system for controlling the automatic creation and distribution
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of data, such as computer programs and other software artifacts. This
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is a very general problem, and there are many applications that fall
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under this description.
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</para>
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<sect2>
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<title>Build management</title>
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<para>
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Build management tools are used to perform <emphasis>software
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builds</emphasis>, that is, the construction of derived products
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such as executable programs from source code. A commonly used build
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tool is Make, which is a standard tool on Unix systems. These tools
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have to deal with several issues:
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<itemizedlist>
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<listitem>
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<para>
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</para>
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</listitem>
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</itemizedlist>
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</para>
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</sect2>
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<sect2>
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<title>Package management</title>
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<para>
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After software has been built, is must also be
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<emphasis>deployed</emphasis> in the intended target environment,
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e.g., the user's workstation. Examples include the Red Hat package
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manager (RPM), Microsoft's MSI, and so on. Here also we have to deal
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with several issues:
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<itemizedlist>
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<listitem>
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<para>
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The <emphasis>creation</emphasis> of packages from some formal
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description of what artifacts should be distributed in the
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package.
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</para>
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</listitem>
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<listitem>
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<para>
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The <emphasis>deployment</emphasis> of packages, that is, the
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mechanism by which we get them onto the intended target
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environment. This can be as simple as copying a file, but
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complexity comes from the wide range of possible installation
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media (such as a network install), and the scalability of the
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process (if a program must be installed on a thousand systems,
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we do not want to visit each system and perform some manual
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steps to install the program on that system; that is, the
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complexity for the system administrator should be constant, not
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linear).
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</para>
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</listitem>
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</itemizedlist>
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</para>
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</sect2>
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</sect1>
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<sect1>
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<title>The Nix system</title>
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<para>
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...
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</para>
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<para>
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Existing tools in this field generally both a underlying model (such as
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the derivation graph of build tools, or the versioning scheme that
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determines when two packages are <quote>compatible</quote> in a package
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management system) and a formalism that allows ...
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</para>
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<para>
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Following the principle of separation of mechanism and policy, the Nix
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system separates the <emphasis>low-level aspect</emphasis> of file
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system object management form the <emphasis>high-level
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aspect</emphasis> of the ...
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</para>
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</sect1>
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</chapter>
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<!--======================================================================-->
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&introduction;
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&installation;
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<chapter>
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<title>A Guided Tour</title>
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<para>
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Bla bla
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</para>
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</chapter>
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<!--======================================================================-->
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<chapter>
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<title>Fix Language Reference</title>
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<para>
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Bla bla
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</para>
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</chapter>
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<!--======================================================================-->
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<chapter>
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<title>Nix Syntax and Semantics</title>
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<para>
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Bla bla
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</para>
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</chapter>
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<!--======================================================================-->
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<chapter>
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<title>Installation</title>
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<sect1>
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<title>Prerequisites</title>
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<para>
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Nix uses Sleepycat's Berkeley DB and CWI's ATerm library. However,
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these are fetched automatically as part of the build process.
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</para>
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<para>
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Other than that, you need a good C++ compiler. GCC 2.95 does not
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appear to work; please use GCC 3.x.
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</para>
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</sect1>
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<sect1>
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<title>Obtaining Nix</title>
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<para>
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Nix can be obtained from its <ulink
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url='http://losser.st-lab.cs.uu.nl:12080/repos/trace/nix/trunk'>Subversion
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repository</ulink>. For example, the following command will check
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out the latest revision into a directory called
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<filename>nix</filename>:
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</para>
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<screen>
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$ svn checkout http://losser.st-lab.cs.uu.nl:12080/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='http://losser.st-lab.cs.uu.nl:12080/repos/trace/nix/tags'>tags
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directory</ulink> of the repository. If you don't have Subversion,
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you can download a <ulink
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url='http://losser.st-lab.cs.uu.nl:12080/dist/trace/'>compressed
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tar-file</ulink> of the latest revision of the repository.
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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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To build Nix, do the following:
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</para>
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<screen>
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$ autoreconf -i
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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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Currently, the only useful switch for <command>configure</command> is
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<option>--prefix=<replaceable>prefix</replaceable></option> to specify
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where Nix is to be installed. The default installation directory is
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<filename>/nix</filename>. You can change this to any location you
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like. You should ensure that you have write permission to the
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installation prefix.
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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, since doing so will in all likelihood make it impossible to
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use derivates built on other systems.
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</para>
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</warning>
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</sect1>
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</chapter>
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<!--======================================================================-->
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<appendix>
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<title>Command Reference</title>
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<refentry>
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<refnamediv>
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<refname>nix</refname>
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<refpurpose>manipulate or query the Nix store</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nix</command>
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<group choice='opt'>
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<arg><option>--path</option></arg>
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<arg><option>-p</option></arg>
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</group>
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<group choice='opt' rep='repeat'>
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<arg><option>--verbose</option></arg>
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<arg><option>-v</option></arg>
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</group>
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<arg choice='plain'><replaceable>operation</replaceable></arg>
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<arg rep='repeat'><replaceable>options</replaceable></arg>
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<arg rep='repeat'><replaceable>arguments</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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The command <command>nix</command> provides access to the Nix store.
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This is the (set of) path(s) where Nix expressions and the file
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system objects built by them are stored.
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</para>
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<para>
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<command>nix</command> has many subcommands called
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<emphasis>operations</emphasis>. These are individually documented
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below. Exactly one operation must always be provided.
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</para>
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</refsect1>
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<refsect1>
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<title>Common Options</title>
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<para>
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In this section the options that are common to all Nix operations are
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listed. These options are allowed for every subcommand (although
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they may not always have an effect).
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</para>
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<variablelist>
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<varlistentry>
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<term><option>--path</option></term>
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<listitem>
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<para>
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Indicates that any identifier arguments to the operation are
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paths in the store rather than identifiers.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--verbose</option></term>
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<listitem>
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<para>
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Increases the level of verbosity of diagnostic messages printed
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on standard error. For each Nix operation, the information
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printed on standard output is well-defined and specified below
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in the respective sections. Any diagnostic information is
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printed on standard error, never on standard output.
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</para>
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<para>
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This option may be specified repeatedly. Currently, the
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following verbosity levels exist:
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</para>
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<variablelist>
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<varlistentry>
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<term>0</term>
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<listitem>
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<para>
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Print error messages only.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>1</term>
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<listitem>
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<para>
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Print informational messages.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>2</term>
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<listitem>
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<para>
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Print even more informational messages.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>3</term>
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<listitem>
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<para>
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Print messages that should only be useful for debugging.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>4</term>
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<listitem>
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<para>
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<quote>Vomit mode</quote>: print vast amounts of debug
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information.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Operation <option>--install</option></title>
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<refsect2>
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<title>Synopsis</title>
|
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<cmdsynopsis>
|
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<command>nix</command>
|
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<group>
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<arg><option>--install</option></arg>
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<arg><option>-i</option></arg>
|
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</group>
|
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<arg choice='plain' rep='repeat'><replaceable>ids</replaceable></arg>
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</cmdsynopsis>
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</refsect2>
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<refsect2>
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<title>Description</title>
|
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<para>
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The operation <option>--install</option> realises the Nix
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expressions identified by <replaceable>ids</replaceable> in the
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file system. If these expressions are derivation expressions, they
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are first normalised. That is, their target paths are are built,
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unless a normal form is already known.
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</para>
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<para>
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The identifiers of the normal forms of the given Nix expressions
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are printed on standard output.
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</para>
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</refsect2>
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</refsect1>
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<refsect1>
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<title>Operation <option>--delete</option></title>
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<refsect2>
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<title>Synopsis</title>
|
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<cmdsynopsis>
|
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<command>nix</command>
|
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<group>
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<arg><option>--delete</option></arg>
|
||||
<arg><option>-d</option></arg>
|
||||
</group>
|
||||
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
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</cmdsynopsis>
|
||||
</refsect2>
|
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|
||||
<refsect2>
|
||||
<title>Description</title>
|
||||
|
||||
<para>
|
||||
The operation <option>--delete</option> unconditionally deletes
|
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the paths <replaceable>paths</replaceable> from the Nix store.
|
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It is an error to attempt to delete paths outside of the store.
|
||||
</para>
|
||||
|
||||
<warning>
|
||||
<para>
|
||||
This operation should almost never be called directly, since no
|
||||
attempt is made to check whether any references exist to the
|
||||
paths to be deleted. Therefore, an inconsistent system could be
|
||||
the result. Deletion of paths in the store is done by the
|
||||
garbage collector (which uses <option>--delete</option> to delete
|
||||
unreferenced paths).
|
||||
</para>
|
||||
</warning>
|
||||
|
||||
</refsect2>
|
||||
|
||||
</refsect1>
|
||||
|
||||
|
||||
</refentry>
|
||||
|
||||
&nix-reference;
|
||||
</appendix>
|
||||
|
||||
|
||||
<!--======================================================================-->
|
||||
|
||||
<appendix>
|
||||
<title>Troubleshooting</title>
|
||||
|
||||
<sect1>
|
||||
<title>Database hangs</title>
|
||||
|
||||
<para>
|
||||
If Nix or Fix appear to hang immediately after they are started, Nix's
|
||||
database is probably <quote>wedged</quote>, i.e., some process died
|
||||
while it held a lock on the database. The solution is to ensure that
|
||||
no other processes are accessing the database and then run the
|
||||
following command:
|
||||
</para>
|
||||
|
||||
<screen>
|
||||
$ db_recover -e -h <replaceable>prefix</replaceable>/var/nix/db</screen>
|
||||
|
||||
<para>
|
||||
Here, <replaceable>prefix</replaceable> should be replaced by Nix's
|
||||
installation prefix.
|
||||
</para>
|
||||
|
||||
</sect1>
|
||||
|
||||
|
||||
<sect1>
|
||||
<title>Database logfile removal</title>
|
||||
|
||||
<para>
|
||||
Every time a Nix database transaction takes place, Nix writes a record
|
||||
of this transaction to a <emphasis>log</emphasis> in its database
|
||||
directory to ensure that the operation can be replayed in case of a
|
||||
application or system crash. However, without manual intervention,
|
||||
the log grows indefinitely. Hence, unused log files should be deleted
|
||||
periodically. This can be accomplished using the following command:
|
||||
</para>
|
||||
|
||||
<screen>
|
||||
$ rm `db_archive -a -h <replaceable>prefix</replaceable>/var/nix/db`</screen>
|
||||
|
||||
</sect1>
|
||||
|
||||
|
||||
</appendix>
|
||||
|
||||
|
||||
<!--======================================================================-->
|
||||
|
||||
<appendix>
|
||||
<title>Bugs</title>
|
||||
|
||||
<itemizedlist>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Nix should automatically recover the Berkeley DB database.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Nix should automatically remove Berkeley DB logfiles.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
</itemizedlist>
|
||||
</appendix>
|
||||
&troubleshooting;
|
||||
&bugs;
|
||||
|
||||
</book>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,26 @@
|
|||
<appendix>
|
||||
<title>Bugs</title>
|
||||
|
||||
<itemizedlist>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Nix should automatically recover the Berkeley DB database.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Nix should automatically remove Berkeley DB logfiles.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
</itemizedlist>
|
||||
|
||||
</appendix>
|
||||
|
||||
<!--
|
||||
local variables:
|
||||
sgml-parent-document: ("book.xml" "appendix")
|
||||
end:
|
||||
-->
|
||||
|
|
@ -0,0 +1,79 @@
|
|||
<chapter>
|
||||
<title>Installation</title>
|
||||
|
||||
<sect1>
|
||||
<title>Prerequisites</title>
|
||||
|
||||
<para>
|
||||
Nix uses Sleepycat's Berkeley DB and CWI's ATerm library. However, these
|
||||
are fetched automatically as part of the build process.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Other than that, you need a good C++ compiler. GCC 2.95 does not appear
|
||||
to work; please use GCC 3.x.
|
||||
</para>
|
||||
</sect1>
|
||||
|
||||
<sect1>
|
||||
<title>Obtaining Nix</title>
|
||||
|
||||
<para>
|
||||
Nix can be obtained from its <ulink
|
||||
url='http://losser.st-lab.cs.uu.nl:12080/repos/trace/nix/trunk'>Subversion
|
||||
repository</ulink>. For example, the following command will check out
|
||||
the latest revision into a directory called <filename>nix</filename>:
|
||||
</para>
|
||||
|
||||
<screen>
|
||||
$ svn checkout http://losser.st-lab.cs.uu.nl:12080/repos/trace/nix/trunk
|
||||
nix</screen>
|
||||
|
||||
<para>
|
||||
Likewise, specific releases can be obtained from the <ulink
|
||||
url='http://losser.st-lab.cs.uu.nl:12080/repos/trace/nix/tags'>tags
|
||||
directory</ulink> of the repository. If you don't have Subversion, you
|
||||
can download a <ulink
|
||||
url='http://losser.st-lab.cs.uu.nl:12080/dist/trace/'>compressed
|
||||
tar-file</ulink> of the latest revision of the repository.
|
||||
</para>
|
||||
|
||||
</sect1>
|
||||
|
||||
<sect1>
|
||||
<title>Building Nix</title>
|
||||
|
||||
<para>
|
||||
To build Nix, do the following:
|
||||
</para>
|
||||
|
||||
<screen>
|
||||
$ autoreconf -i $ ./configure <replaceable>options...</replaceable> $
|
||||
make $ make install</screen>
|
||||
|
||||
<para>
|
||||
Currently, the only useful switch for <command>configure</command> is
|
||||
<option>--prefix=<replaceable>prefix</replaceable></option> to specify
|
||||
where Nix is to be installed. The default installation directory is
|
||||
<filename>/nix</filename>. You can change this to any location you like.
|
||||
You should ensure that you have write permission to the installation
|
||||
prefix.
|
||||
</para>
|
||||
|
||||
<warning>
|
||||
<para>
|
||||
It is advisable <emphasis>not</emphasis> to change the installation
|
||||
prefix, since doing so will in all likelihood make it impossible to use
|
||||
derivates built on other systems.
|
||||
</para>
|
||||
</warning>
|
||||
|
||||
</sect1>
|
||||
|
||||
</chapter>
|
||||
|
||||
<!--
|
||||
local variables:
|
||||
sgml-parent-document: ("book.xml" "chapter")
|
||||
end:
|
||||
-->
|
||||
|
|
@ -0,0 +1,98 @@
|
|||
<chapter>
|
||||
<title>Introduction</title>
|
||||
|
||||
<sect1>
|
||||
<title>The problem space</title>
|
||||
|
||||
<para>
|
||||
Nix is a system for controlling the automatic creation and distribution
|
||||
of data, such as computer programs and other software artifacts. This is
|
||||
a very general problem, and there are many applications that fall under
|
||||
this description.
|
||||
</para>
|
||||
|
||||
<sect2>
|
||||
<title>Build management</title>
|
||||
|
||||
<para>
|
||||
Build management tools are used to perform <emphasis>software
|
||||
builds</emphasis>, that is, the construction of derived products such
|
||||
as executable programs from source code. A commonly used build tool is
|
||||
Make, which is a standard tool on Unix systems. These tools have to
|
||||
deal with several issues:
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>
|
||||
</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</para>
|
||||
|
||||
</sect2>
|
||||
|
||||
<sect2>
|
||||
<title>Package management</title>
|
||||
|
||||
<para>
|
||||
After software has been built, is must also be
|
||||
<emphasis>deployed</emphasis> in the intended target environment, e.g.,
|
||||
the user's workstation. Examples include the Red Hat package manager
|
||||
(RPM), Microsoft's MSI, and so on. Here also we have to deal with
|
||||
several issues:
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>
|
||||
The <emphasis>creation</emphasis> of packages from some formal
|
||||
description of what artifacts should be distributed in the
|
||||
package.
|
||||
</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>
|
||||
The <emphasis>deployment</emphasis> of packages, that is, the
|
||||
mechanism by which we get them onto the intended target
|
||||
environment. This can be as simple as copying a file, but
|
||||
complexity comes from the wide range of possible installation
|
||||
media (such as a network install), and the scalability of the
|
||||
process (if a program must be installed on a thousand systems, we
|
||||
do not want to visit each system and perform some manual steps to
|
||||
install the program on that system; that is, the complexity for
|
||||
the system administrator should be constant, not linear).
|
||||
</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</para>
|
||||
</sect2>
|
||||
|
||||
</sect1>
|
||||
|
||||
<sect1>
|
||||
<title>The Nix system</title>
|
||||
|
||||
<para>
|
||||
...
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Existing tools in this field generally both a underlying model (such as
|
||||
the derivation graph of build tools, or the versioning scheme that
|
||||
determines when two packages are <quote>compatible</quote> in a package
|
||||
management system) and a formalism that allows ...
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Following the principle of separation of mechanism and policy, the Nix
|
||||
system separates the <emphasis>low-level aspect</emphasis> of file system
|
||||
object management form the <emphasis>high-level aspect</emphasis> of the
|
||||
...
|
||||
</para>
|
||||
|
||||
</sect1>
|
||||
|
||||
</chapter>
|
||||
|
||||
<!--
|
||||
local variables:
|
||||
sgml-parent-document: ("book.xml" "chapter")
|
||||
end:
|
||||
-->
|
||||
|
|
@ -0,0 +1,213 @@
|
|||
<refentry>
|
||||
<refnamediv>
|
||||
<refname>nix</refname>
|
||||
<refpurpose>manipulate or query the Nix store</refpurpose>
|
||||
</refnamediv>
|
||||
|
||||
<refsynopsisdiv>
|
||||
<cmdsynopsis>
|
||||
<command>nix</command>
|
||||
<group choice='opt'>
|
||||
<arg><option>--path</option></arg>
|
||||
<arg><option>-p</option></arg>
|
||||
</group>
|
||||
<group choice='opt' rep='repeat'>
|
||||
<arg><option>--verbose</option></arg>
|
||||
<arg><option>-v</option></arg>
|
||||
</group>
|
||||
<arg choice='plain'><replaceable>operation</replaceable></arg>
|
||||
<arg rep='repeat'><replaceable>options</replaceable></arg>
|
||||
<arg rep='repeat'><replaceable>arguments</replaceable></arg>
|
||||
</cmdsynopsis>
|
||||
</refsynopsisdiv>
|
||||
|
||||
<refsect1>
|
||||
<title>Description</title>
|
||||
|
||||
<para>
|
||||
The command <command>nix</command> provides access to the Nix store. This
|
||||
is the (set of) path(s) where Nix expressions and the file system objects
|
||||
built by them are stored.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
<command>nix</command> has many subcommands called
|
||||
<emphasis>operations</emphasis>. These are individually documented
|
||||
below. Exactly one operation must always be provided.
|
||||
</para>
|
||||
|
||||
</refsect1>
|
||||
|
||||
<refsect1>
|
||||
<title>Common Options</title>
|
||||
|
||||
<para>
|
||||
In this section the options that are common to all Nix operations are
|
||||
listed. These options are allowed for every subcommand (although they
|
||||
may not always have an effect).
|
||||
</para>
|
||||
|
||||
<variablelist>
|
||||
|
||||
<varlistentry>
|
||||
<term><option>--path</option></term>
|
||||
<listitem>
|
||||
<para>
|
||||
Indicates that any identifier arguments to the operation are paths
|
||||
in the store rather than identifiers.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term><option>--verbose</option></term>
|
||||
<listitem>
|
||||
<para>
|
||||
Increases the level of verbosity of diagnostic messages printed on
|
||||
standard error. For each Nix operation, the information printed on
|
||||
standard output is well-defined and specified below in the
|
||||
respective sections. Any diagnostic information is printed on
|
||||
standard error, never on standard output.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This option may be specified repeatedly. Currently, the following
|
||||
verbosity levels exist:
|
||||
</para>
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>0</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Print error messages only.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>1</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Print informational messages.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>2</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Print even more informational messages.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>3</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Print messages that should only be useful for debugging.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>4</term>
|
||||
<listitem>
|
||||
<para>
|
||||
<quote>Vomit mode</quote>: print vast amounts of debug
|
||||
information.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
|
||||
</refsect1>
|
||||
|
||||
|
||||
<refsect1>
|
||||
<title>Operation <option>--install</option></title>
|
||||
|
||||
<refsect2>
|
||||
<title>Synopsis</title>
|
||||
<cmdsynopsis>
|
||||
<command>nix</command>
|
||||
<group>
|
||||
<arg><option>--install</option></arg>
|
||||
<arg><option>-i</option></arg>
|
||||
</group>
|
||||
<arg choice='plain' rep='repeat'><replaceable>ids</replaceable></arg>
|
||||
</cmdsynopsis>
|
||||
</refsect2>
|
||||
|
||||
<refsect2>
|
||||
<title>Description</title>
|
||||
|
||||
<para>
|
||||
The operation <option>--install</option> realises the Nix expressions
|
||||
identified by <replaceable>ids</replaceable> in the file system. If
|
||||
these expressions are derivation expressions, they are first
|
||||
normalised. That is, their target paths are are built, unless a normal
|
||||
form is already known.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The identifiers of the normal forms of the given Nix expressions are
|
||||
printed on standard output.
|
||||
</para>
|
||||
|
||||
</refsect2>
|
||||
|
||||
</refsect1>
|
||||
|
||||
|
||||
<refsect1>
|
||||
<title>Operation <option>--delete</option></title>
|
||||
|
||||
<refsect2>
|
||||
<title>Synopsis</title>
|
||||
<cmdsynopsis>
|
||||
<command>nix</command>
|
||||
<group>
|
||||
<arg><option>--delete</option></arg>
|
||||
<arg><option>-d</option></arg>
|
||||
</group>
|
||||
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
|
||||
</cmdsynopsis>
|
||||
</refsect2>
|
||||
|
||||
<refsect2>
|
||||
<title>Description</title>
|
||||
|
||||
<para>
|
||||
The operation <option>--delete</option> unconditionally deletes the
|
||||
paths <replaceable>paths</replaceable> from the Nix store. It is an
|
||||
error to attempt to delete paths outside of the store.
|
||||
</para>
|
||||
|
||||
<warning>
|
||||
<para>
|
||||
This operation should almost never be called directly, since no
|
||||
attempt is made to verify that no references exist to the paths to
|
||||
be deleted. Therefore, careless deletion can result in an
|
||||
inconsistent system. Deletion of paths in the store is done by the
|
||||
garbage collector (which uses <option>--delete</option> to delete
|
||||
unreferenced paths).
|
||||
|
||||
</para>
|
||||
</warning>
|
||||
|
||||
</refsect2>
|
||||
|
||||
</refsect1>
|
||||
|
||||
|
||||
</refentry>
|
||||
|
||||
|
||||
<!--
|
||||
local variables:
|
||||
sgml-parent-document: ("book.xml" "refentry")
|
||||
end:
|
||||
-->
|
||||
|
|
@ -0,0 +1,49 @@
|
|||
<appendix>
|
||||
<title>Troubleshooting</title>
|
||||
|
||||
<sect1>
|
||||
<title>Database hangs</title>
|
||||
|
||||
<para>
|
||||
If Nix or Fix appear to hang immediately after they are started, Nix's
|
||||
database is probably <quote>wedged</quote>, i.e., some process died while
|
||||
it held a lock on the database. The solution is to ensure that no other
|
||||
processes are accessing the database and then run the following command:
|
||||
</para>
|
||||
|
||||
<screen>
|
||||
$ db_recover -e -h <replaceable>prefix</replaceable>/var/nix/db</screen>
|
||||
|
||||
<para>
|
||||
Here, <replaceable>prefix</replaceable> should be replaced by Nix's
|
||||
installation prefix.
|
||||
</para>
|
||||
|
||||
</sect1>
|
||||
|
||||
|
||||
<sect1>
|
||||
<title>Database logfile removal</title>
|
||||
|
||||
<para>
|
||||
Every time a Nix database transaction takes place, Nix writes a record of
|
||||
this transaction to a <emphasis>log</emphasis> in its database directory
|
||||
to ensure that the operation can be replayed in case of a application or
|
||||
system crash. However, without manual intervention, the log grows
|
||||
indefinitely. Hence, unused log files should be deleted periodically.
|
||||
This can be accomplished using the following command:
|
||||
</para>
|
||||
|
||||
<screen>
|
||||
$ rm `db_archive -a -h
|
||||
<replaceable>prefix</replaceable>/var/nix/db`</screen>
|
||||
|
||||
</sect1>
|
||||
|
||||
</appendix>
|
||||
|
||||
<!--
|
||||
local variables:
|
||||
sgml-parent-document: ("book.xml" "appendix")
|
||||
end:
|
||||
-->
|
||||
Loading…
Reference in New Issue