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doc: re-format

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This commit is contained in:
Jan Tojnar
2019-09-18 22:12:54 +02:00
parent 641f6356d3
commit 83c2ad80ca
45 changed files with 1095 additions and 4339 deletions
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37
doc/languages-frameworks/ruby.xml
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@@ -4,11 +4,7 @@
<title>Ruby</title>
<para>
There currently is support to bundle applications that are packaged as Ruby
gems. The utility "bundix" allows you to write a
<filename>Gemfile</filename>, let bundler create a
<filename>Gemfile.lock</filename>, and then convert this into a nix
expression that contains all Gem dependencies automatically.
There currently is support to bundle applications that are packaged as Ruby gems. The utility "bundix" allows you to write a <filename>Gemfile</filename>, let bundler create a <filename>Gemfile.lock</filename>, and then convert this into a nix expression that contains all Gem dependencies automatically.
</para>
<para>
@@ -45,9 +41,7 @@ bundlerEnv rec {
</screen>
<para>
Please check in the <filename>Gemfile</filename>,
<filename>Gemfile.lock</filename> and the <filename>gemset.nix</filename> so
future updates can be run easily.
Please check in the <filename>Gemfile</filename>, <filename>Gemfile.lock</filename> and the <filename>gemset.nix</filename> so future updates can be run easily.
</para>
<para>
@@ -62,10 +56,7 @@ $ nix-shell -p bundix --run 'bundix'
</screen>
<para>
For tools written in Ruby - i.e. where the desire is to install a package and
then execute e.g. <command>rake</command> at the command line, there is an
alternative builder called <literal>bundlerApp</literal>. Set up the
<filename>gemset.nix</filename> the same way, and then, for example:
For tools written in Ruby - i.e. where the desire is to install a package and then execute e.g. <command>rake</command> at the command line, there is an alternative builder called <literal>bundlerApp</literal>. Set up the <filename>gemset.nix</filename> the same way, and then, for example:
</para>
<screen>
@@ -87,29 +78,11 @@ bundlerApp {
</screen>
<para>
The chief advantage of <literal>bundlerApp</literal> over
<literal>bundlerEnv</literal> is the executables introduced in the
environment are precisely those selected in the <literal>exes</literal> list,
as opposed to <literal>bundlerEnv</literal> which adds all the executables
made available by gems in the gemset, which can mean e.g.
<command>rspec</command> or <command>rake</command> in unpredictable versions
available from various packages.
The chief advantage of <literal>bundlerApp</literal> over <literal>bundlerEnv</literal> is the executables introduced in the environment are precisely those selected in the <literal>exes</literal> list, as opposed to <literal>bundlerEnv</literal> which adds all the executables made available by gems in the gemset, which can mean e.g. <command>rspec</command> or <command>rake</command> in unpredictable versions available from various packages.
</para>
<para>
Resulting derivations for both builders also have two helpful attributes,
<literal>env</literal> and <literal>wrappedRuby</literal>. The first one
allows one to quickly drop into <command>nix-shell</command> with the
specified environment present. E.g. <command>nix-shell -A sensu.env</command>
would give you an environment with Ruby preset so it has all the libraries
necessary for <literal>sensu</literal> in its paths. The second one can be
used to make derivations from custom Ruby scripts which have
<filename>Gemfile</filename>s with their dependencies specified. It is a
derivation with <command>ruby</command> wrapped so it can find all the needed
dependencies. For example, to make a derivation <literal>my-script</literal>
for a <filename>my-script.rb</filename> (which should be placed in
<filename>bin</filename>) you should run <command>bundix</command> as
specified above and then use <literal>bundlerEnv</literal> like this:
Resulting derivations for both builders also have two helpful attributes, <literal>env</literal> and <literal>wrappedRuby</literal>. The first one allows one to quickly drop into <command>nix-shell</command> with the specified environment present. E.g. <command>nix-shell -A sensu.env</command> would give you an environment with Ruby preset so it has all the libraries necessary for <literal>sensu</literal> in its paths. The second one can be used to make derivations from custom Ruby scripts which have <filename>Gemfile</filename>s with their dependencies specified. It is a derivation with <command>ruby</command> wrapped so it can find all the needed dependencies. For example, to make a derivation <literal>my-script</literal> for a <filename>my-script.rb</filename> (which should be placed in <filename>bin</filename>) you should run <command>bundix</command> as specified above and then use <literal>bundlerEnv</literal> like this:
</para>
<programlisting>