source: general/prog/mercurial.xml@ 28320bf4

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY mercurial-download-http "https://www.mercurial-scm.org/release/mercurial-&mercurial-version;.tar.gz">
  <!ENTITY mercurial-download-ftp  " ">
  <!ENTITY mercurial-md5sum        "a175ce4f6660d87849589ee7d015db67">
  <!ENTITY mercurial-size          "4.5 MB">
  <!ENTITY mercurial-buildsize     "54 MB (with documentation, additional 384 MB for tests)">
  <!ENTITY mercurial-time          "less than 0.1 SBU (with documentation, additional 3.4 SBU for tests, using -j8)">
]>

<sect1 id="mercurial" xreflabel="Mercurial-&mercurial-version;">
  <?dbhtml filename="mercurial.html"?>

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
  </sect1info>

  <title>Mercurial-&mercurial-version;</title>

  <indexterm zone="mercurial">
    <primary sortas="a-mercurial">mercurial</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to Mercurial</title>

    <para><application>Mercurial</application> is a distributed source control
    management tool similar to <application>Git</application> and
    <application>Bazaar</application>. <application>Mercurial</application> is
    written in <application>Python</application> and is used by projects such as
    Mozilla and Vim.</para>

    &lfs78_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>Download (HTTP): <ulink url="&mercurial-download-http;"/></para>
      </listitem>
      <listitem>
        <para>Download (FTP): <ulink url="&mercurial-download-ftp;"/></para>
      </listitem>
      <listitem>
        <para>Download MD5 sum: &mercurial-md5sum;</para>
      </listitem>
      <listitem>
        <para>Download size: &mercurial-size;</para>
      </listitem>
      <listitem>
        <para>Estimated disk space required: &mercurial-buildsize;</para>
      </listitem>
      <listitem>
        <para>Estimated build time: &mercurial-time;</para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Mercurial Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="python2"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
    <xref linkend="git"/>,
    <xref linkend="gnupg2"/> (<command>gpg2</command> with Python bindings),
    <xref linkend="subversion"/> (with Python bindings),
    <ulink url="https://launchpad.net/bzr">Bazaar</ulink>,
    <ulink url="http://www.nongnu.org/cvs/">CVS</ulink>,
    <ulink url="http://docutils.sourceforge.net/">Docutils</ulink> (required to build the documentation),
    <ulink url="http://pypi.python.org/pypi/pyflakes">pyflakes</ulink>,
    <ulink url="http://pygments.org/">pygments</ulink>, and
    <ulink url="https://launchpad.net/pyopenssl">pyOpenSSL</ulink>

    </para>

    <para condition="html" role="usernotes">User Notes:
    <ulink url="&blfs-wiki;/mercurial"/></para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Mercurial</title>

    <para>Build <application>Mercurial</application> by issuing the following
    command:</para>

<screen><userinput>make build</userinput></screen>

    <para>To build the documentation (requires
    <application>Docutils</application>), issue:</para>

<screen><userinput>make doc</userinput></screen>

    <para>Running the test suite is optional. If some thest fails, it can be
    disabled. To test the results in the subdiretory <filename
    class="directory">tests/tmp</filename>, skipping failing tests,
    issue:</para>

<screen><userinput>cat &gt; tests/blacklists/failed-tests &lt;&lt; "EOF"
<literal># Test Failures
  test-convert-svn-source.t
  test-convert-hg-svn.t
  test-gpg.t</literal>
EOF
rm -rf tests/tmp &amp;&amp;
TESTFLAGS="-j<replaceable>&lt;N&gt;</replaceable> --tmpdir tmp --blacklist blacklists/failed-tests" \
make check</userinput></screen>

    <para>where <replaceable>&lt;N&gt;</replaceable> is an integer between one
    and the number of ( processor X threads ), inclusive. In order to
    investigate the apparently failing tests, you may use the
    <command>run-tests.py</command> scrypt. To see the almost forty switches,
    some of them very useful, issue <command>tests/run-tests.py --help</command>.
    Running the following commands, you will execute only the tests that failed
    before:</para>

<screen><userinput>pushd tests &amp;&amp;
rm -rf tmp  &amp;&amp;
./run-tests.py --debug --tmpdir tmp      \
               test-convert-svn-source.t \
               test-convert-hg-svn.t     \
               test-gpg.t &amp;&amp;
popd</userinput></screen>

    <para>Normally, failures will be repeated. However, if you add the switch
    "--debug" before "--tmpdir", and run again, the failures are gone. Normally,
    from now on, there will be no more failure whether you use the debug switch
    or not. An interesting switch is "--time", which will generated at the end
    of the test suite execution, a table with all executed tests and respective
    start, end, user, system and real times.  Notice that the switches may be
    used with <command>make check</command>, in the
    <envar>TESTFLAGS</envar> environment variable.</para>

    <para>Install <application>Mercurial</application> by running the following
    command (as <systemitem class="username">root</systemitem>):</para>

<screen role="root"><userinput>make PREFIX=/usr install-bin</userinput></screen>

    <para>If you built the documentation, install it by running the following
    command (as <systemitem class="username">root</systemitem>):</para>

<screen role="root"><userinput>make PREFIX=/usr install-doc</userinput></screen>

    <para>After installed, two very quick and simple tests should run correctly.
    First one needs some configuration:</para>

<screen><userinput>cat &gt;&gt; ~/.hgrc &lt;&lt; "EOF"
<literal>[ui]
username = &lt;user_name&gt; &lt;your@mail&gt;</literal>
EOF</userinput></screen>

    <para>where you must replace &lt;user_name&gt; and &lt;your@mail&gt; (mail
    is optional and can be omitted). With the user identity defined, run
    <command>hg debuginstall</command> and several lines will be displayed,
    the last one reading "no problems detected". Another quick and simple test
    is just <command>hg</command>, which should output basic commands that can
    be used with <command>hg</command>.</para>

  </sect2>

  <sect2 role="configuration">
    <title>Configuring Mercurial</title>

    <sect3 id="mercurial-config">
      <title>Config Files</title>

      <para>
        <filename>/etc/mercurial/hgrc</filename> and
        <filename>~/.hgrc</filename>
      </para>

      <indexterm zone="mercurial mercurial-config">
        <primary sortas="e-etc-mercurial-hgrc">/etc/mercurial/hgrc</primary>
      </indexterm>

      <indexterm zone="mercurial mercurial-config">
        <primary sortas="e-AA.hgrc">~/.hgrc</primary>
      </indexterm>

      <para>
        A great majority of extensions are disabled by default. Run <command>hg
        help extensions</command> if you need to enable any, e.g. when
        investigating test failures, and use one of the configuration files to
        enable it.
      </para>

      <para>
        If you have installed the <xref linkend="cacerts"/> and you want
        <application>Mercurial</application> to use them, as the
        <systemitem class="username">root</systemitem> user:
      </para>

<screen role="root"><userinput>install -v -d -m755 /etc/mercurial &amp;&amp;
cat &gt; /etc/mercurial/hgrc &lt;&lt; "EOF"
<literal>[web]
cacerts = /etc/ssl/ca-bundle.crt</literal>
EOF</userinput></screen>

    </sect3>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>
          hg
        </seg>
        <seg>
          several internal modules under
          /usr/lib/python&python2-majorver;/site-packages/mercurial
        </seg>
        <seg>
          /etc/mercurial and
          /usr/lib/python&python2-majorver;/site-packages/{hgext,mercurial}
        </seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="hg">
        <term><command>hg</command></term>
        <listitem>
          <para>is the program file for mercurial.</para>
          <indexterm zone="mercurial hg">
            <primary sortas="b-hg">hg</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>