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package-management.html
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<a class="link" href="v-and-c.html">V and C</a>
<a class="link subtopic" href="v-and-c.html#calling-c-from-v"> Calling C from V</a>
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<a class="link subtopic" href="v-and-c.html#including-c-code"> Including C code</a>
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<a class="link subtopic" href="other-v-features.html#inline-assembly"> Inline assembly</a>
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<a class="link" href="appendix-i-keywords.html">Appendix I: Keywords</a>
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<a class="link" href="appendix-ii-operators.html">Appendix II: Operators</a>
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<main>
<h1 class="main">Package management</h1>
<p>A V <em>module</em> is a single folder with .v files inside. A V <em>package</em> can
contain one or more V modules. A V <em>package</em> should have a <code>v.mod</code> file
at its top folder, describing the contents of the package.</p>
<p>V packages are installed normally in your <code>~/.vmodules</code> folder. That
location can be overridden by setting the env variable <code>VMODULES</code>.</p>
<h2 id="package-commands">Package commands <a href="package-management.html#package-commands" class="header-anchor" aria-hidden="true">#</a></h2>
<p>You can use the V frontend to do package operations, just like you can
use it for compiling code, formatting code, vetting code etc.</p>
<pre><code class="language-powershell">v [package_command] [param]
</code></pre>
<p>where a package command can be one of:</p>
<pre><code> install Install a package from VPM.
remove Remove a package that was installed from VPM.
search Search for a package from VPM.
update Update an installed package from VPM.
upgrade Upgrade all the outdated packages.
list List all installed packages.
outdated Show installed packages that need updates.
</code></pre>
<p>You can install packages already created by someone else with <a href="https://vpm.vlang.io/">VPM</a>:</p>
<pre><code class="language-powershell">v install [package]
</code></pre>
<p><strong>Example:</strong></p>
<pre><code class="language-powershell">v install ui
</code></pre>
<p>Packages can be installed directly from git or mercurial repositories.</p>
<pre><code class="language-powershell">v install [--once] [--git|--hg] [url]
</code></pre>
<p><strong>Example:</strong></p>
<pre><code class="language-powershell">v install --git https://github.com/vlang/markdown
</code></pre>
<p>Sometimes you may want to install the dependencies <strong>ONLY</strong> if those are not installed:</p>
<pre><code>v install --once [package]
</code></pre>
<p>Removing a package with v:</p>
<pre><code class="language-powershell">v remove [package]
</code></pre>
<p><strong>Example:</strong></p>
<pre><code class="language-powershell">v remove ui
</code></pre>
<p>Updating an installed package from <a href="https://vpm.vlang.io/">VPM</a>:</p>
<pre><code class="language-powershell">v update [package]
</code></pre>
<p><strong>Example:</strong></p>
<pre><code class="language-powershell">v update ui
</code></pre>
<p>Or you can update all your packages:</p>
<pre><code class="language-powershell">v update
</code></pre>
<p>To see all the packages you have installed, you can use:</p>
<pre><code class="language-powershell">v list
</code></pre>
<p><strong>Example:</strong></p>
<pre><code class="language-powershell">> v list
Installed packages:
markdown
ui
</code></pre>
<p>To see all the packages that need updates:</p>
<pre><code class="language-powershell">v outdated
</code></pre>
<p><strong>Example:</strong></p>
<pre><code class="language-powershell">> v outdated
Package are up to date.
</code></pre>
<h2 id="publish-package">Publish package <a href="package-management.html#publish-package" class="header-anchor" aria-hidden="true">#</a></h2>
<ol>
<li><p>Put a <code>v.mod</code> file inside the toplevel folder of your package (if you
created your package with the command <code>v new mypackage</code> or <code>v init</code>
you already have a <code>v.mod</code> file).</p>
<pre><code class="language-sh">v new mypackage
Input your project description: My nice package.
Input your project version: (0.0.0) 0.0.1
Input your project license: (MIT)
Initialising ...
Complete!
</code></pre>
<p>Example <code>v.mod</code>:</p>
<div class="language-v">Module {
name: 'mypackage'
description: 'My nice package.'
version: '0.0.1'
license: 'MIT'
dependencies: []
}
</div>
<p>Minimal file structure:</p>
<pre><code>v.mod
mypackage.v
</code></pre>
<p>The name of your package should be used with the <code>module</code> directive
at the top of all files in your package. For <code>mypackage.v</code>:</p>
<div class="language-v">module mypackage
pub fn hello_world() {
println('Hello World!')
}
</div>
</li>
<li><p>Create a git repository in the folder with the <code>v.mod</code> file
(this is not required if you used <code>v new</code> or <code>v init</code>):</p>
<pre><code class="language-sh">git init
git add .
git commit -m "INIT"
</code></pre>
</li>
<li><p>Create a public repository on github.com.</p>
</li>
<li><p>Connect your local repository to the remote repository and push the changes.</p>
</li>
<li><p>Add your package to the public V package registry VPM:
<a href="https://vpm.vlang.io/new">https://vpm.vlang.io/new</a></p>
<p>You will have to login with your Github account to register the package.
<strong>Warning:</strong> <em>Currently it is not possible to edit your entry after submitting.
Check your package name and github url twice as this cannot be changed by you later.</em></p>
</li>
<li><p>The final package name is a combination of your github account and
the package name you provided e.g. <code>mygithubname.mypackage</code>.</p>
</li>
</ol>
<p><strong>Optional:</strong> tag your V package with <code>vlang</code> and <code>vlang-package</code> on github.com
to allow for a better search experience.</p>
<h1>Advanced Topics</h1>
</main>
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