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       <h1 class="title">gvt</h1>
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       <p class="tagline">The simplest go vendoring tool, based on gb-vendor</p>
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           <a href="https://github.com/FiloSottile/gvt" class="code">View gvt on GitHub</a>
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         <article class="markdown-body">
           <p><code>gvt</code> is a simple Go vendoring tool made for the GO15VENDOREXPERIMENT, based on <a href="https://github.com/constabulary/gb">gb-vendor</a>.</p>

 <p><code>gvt</code> lets you easily and "idiomatically" include external dependencies in your repository with the GO15VENDOREXPERIMENT to get reproducible builds.</p>

 <ul>
 <li><p><strong>No need to learn a new tool or format!</strong><br>
 You already know how to use <code>gvt</code>: just run <code>gvt fetch</code> when and like you would run <code>go get</code>. You can imagine what <code>gvt update</code> and <code>gvt delete</code> do.</p></li>
 <li><p><strong>No need to change how you build your project!</strong><br>
 <code>gvt</code> downloads packages to <code>./vendor/...</code>. With <code>GO15VENDOREXPERIMENT=1</code> the stock Go compiler will find and use those dependencies automatically (without import path or GOPATH changes).</p></li>
 <li><p><strong>No need to manually chase, copy or cleanup dependencies!</strong><br>
 <code>gvt</code> works recursively as you would expect, and lets you update vendored dependencies. It also writes a manifest to <code>./vendor/manifest</code> and never touches your system GOPATH. Finally, it strips the VCS metadata so that you can commit the vendored source cleanly.</p></li>
 <li><p><strong>No need for your users and occasional contributors to install or even know about gvt!</strong><br>
 Packages whose dependencies are vendored with <code>gvt</code> are <code>go build</code>-able and <code>go get</code>-able out of the box by Go 1.5 with <code>GO15VENDOREXPERIMENT=1</code> set.</p></li>
 </ul>

 <p><em>Note that projects must live within the GOPATH tree in order to be go buildable with the GO15VENDOREXPERIMENT flag.</em></p>

 <h2>
 <a id="installation" class="anchor" href="#installation" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Installation</h2>

 <pre><code>GO15VENDOREXPERIMENT=1 go get -u github.com/FiloSottile/gvt
 </code></pre>

 <h2>
 <a id="usage" class="anchor" href="#usage" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Usage</h2>

 <p>You know how to use <code>go get</code>? That's how you use <code>gvt fetch</code>.</p>

 <pre><code>$ gvt fetch github.com/fatih/color
 2015/09/05 02:38:06 fetching recursive dependency github.com/mattn/go-isatty
 2015/09/05 02:38:07 fetching recursive dependency github.com/shiena/ansicolor

 $ tree -d
 .
 └── vendor
     └── github.com
         ├── fatih
         │   └── color
         ├── mattn
         │   └── go-isatty
         └── shiena
             └── ansicolor
                 └── ansicolor

 9 directories

 $ cat &gt; main.go
 package main
 import "github.com/fatih/color"
 func main() {
     color.Red("Hello, world!")
 }

 $ export GO15VENDOREXPERIMENT=1
 $ go build .
 $ ./hello
 Hello, world!

 $ git add main.go vendor/ &amp;&amp; git commit

 </code></pre>

 <p>Full usage on <a href="http://godoc.org/github.com/FiloSottile/gvt">GoDoc <img src="https://godoc.org/github.com/FiloSottile/gvt?status.svg" alt="GoDoc"></a></p>

 <p>If you use <code>gvt</code> for your projects, it would definitely make my day better if you dropped a line at <code>gvt -at- filippo.io</code> :)</p>

 <h2>
 <a id="alternative-not-checking-in-vendored-source" class="anchor" href="#alternative-not-checking-in-vendored-source" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Alternative: not checking in vendored source</h2>

 <p>Some developers prefer not to check in the source of the vendored dependencies. In that case you can add lines like these to e.g. your <code>.gitignore</code></p>

 <pre><code>vendor/**
 !vendor/manifest
 </code></pre>

 <p>When you check out the source again, you can then run <code>gvt restore</code> to fetch all the dependencies at the revisions specified in the <code>vendor/manifest</code> file.</p>

 <p>Please consider that this approach has the following consequences:</p>

 <ul>
 <li>the package consumer will need gvt to fetch the dependencies</li>
 <li>the dependencies will need to remain available from the source repositories: if the original repository goes down or rewrites history, build reproducibility is lost</li>
 <li>
 <code>go get</code> won't work on your package</li>
 </ul>

 <h2>
 <a id="troubleshooting" class="anchor" href="#troubleshooting" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Troubleshooting</h2>

 <h3>
 <a id="error-tag-fetch-not-found" class="anchor" href="#error-tag-fetch-not-found" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a><code>error: tag 'fetch' not found.</code>
 </h3>

 <p>This kind of errors happens because you have an alias for <code>gvt</code> pointing to <code>git verify-tag</code>.</p>

 <p>Run this, or add it to your <code>~/.bashrc</code> / <code>~/.zshrc</code>:</p>

 <pre><code>unalias gvt
 </code></pre>

 <h3>
 <a id="go-build-cant-find-the-vendored-package" class="anchor" href="#go-build-cant-find-the-vendored-package" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a><code>go build</code> can't find the vendored package</h3>

 <p>Make sure you set <code>GO15VENDOREXPERIMENT=1</code>.</p>

 <p>Also note that GO15VENDOREXPERIMENT does not apply when outside the GOPATH tree. That is, your project must be somewhere in a subfolder of <code>$GOPATH</code>.</p>
         </article>
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       <div class="owner">
       <p><a href="https://github.com/FiloSottile" class="avatar"><img src="https://avatars3.githubusercontent.com/u/1225294?v=3&amp;s=60" width="48" height="48"></a> <a href="https://github.com/FiloSottile">FiloSottile</a> maintains <a href="https://github.com/FiloSottile/gvt">gvt</a></p>


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	<!doctype html>
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	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">

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	<link rel="stylesheet" href="stylesheets/github-dark.css">
	<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>

	<title>gvt</title>
	<meta name="description" content="The simplest go vendoring tool">

	<meta name="viewport" content="width=device-width,initial-scale=1">

	</head>

	<body>

	<div class="wrapper">
	<header>
	<h1 class="title">gvt</h1>
	</header>
	<div id="container">
	<p class="tagline">The simplest go vendoring tool, based on gb-vendor</p>
	<div id="main" role="main">
	<div class="download-bar">
	<div class="inner">
	<a href="https://github.com/FiloSottile/gvt" class="code">View gvt on GitHub</a>
	</div>
	<span class="blc"></span><span class="trc"></span>
	</div>
	<article class="markdown-body">
	<p><code>gvt</code> is a simple Go vendoring tool made for the GO15VENDOREXPERIMENT, based on <a href="https://github.com/constabulary/gb">gb-vendor</a>.</p>

	<p><code>gvt</code> lets you easily and "idiomatically" include external dependencies in your repository with the GO15VENDOREXPERIMENT to get reproducible builds.</p>

	<ul>
	<li><p><strong>No need to learn a new tool or format!</strong><br>
	You already know how to use <code>gvt</code>: just run <code>gvt fetch</code> when and like you would run <code>go get</code>. You can imagine what <code>gvt update</code> and <code>gvt delete</code> do.</p></li>
	<li><p><strong>No need to change how you build your project!</strong><br>
	<code>gvt</code> downloads packages to <code>./vendor/...</code>. With <code>GO15VENDOREXPERIMENT=1</code> the stock Go compiler will find and use those dependencies automatically (without import path or GOPATH changes).</p></li>
	<li><p><strong>No need to manually chase, copy or cleanup dependencies!</strong><br>
	<code>gvt</code> works recursively as you would expect, and lets you update vendored dependencies. It also writes a manifest to <code>./vendor/manifest</code> and never touches your system GOPATH. Finally, it strips the VCS metadata so that you can commit the vendored source cleanly.</p></li>
	<li><p><strong>No need for your users and occasional contributors to install or even know about gvt!</strong><br>
	Packages whose dependencies are vendored with <code>gvt</code> are <code>go build</code>-able and <code>go get</code>-able out of the box by Go 1.5 with <code>GO15VENDOREXPERIMENT=1</code> set.</p></li>
	</ul>

	<p><em>Note that projects must live within the GOPATH tree in order to be go buildable with the GO15VENDOREXPERIMENT flag.</em></p>

	<h2>
	<a id="installation" class="anchor" href="#installation" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Installation</h2>

	<pre><code>GO15VENDOREXPERIMENT=1 go get -u github.com/FiloSottile/gvt
	</code></pre>

	<h2>
	<a id="usage" class="anchor" href="#usage" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Usage</h2>

	<p>You know how to use <code>go get</code>? That's how you use <code>gvt fetch</code>.</p>

	<pre><code>$ gvt fetch github.com/fatih/color
	2015/09/05 02:38:06 fetching recursive dependency github.com/mattn/go-isatty
	2015/09/05 02:38:07 fetching recursive dependency github.com/shiena/ansicolor

	$ tree -d
	.
	└── vendor
	└── github.com
	├── fatih
	│ └── color
	├── mattn
	│ └── go-isatty
	└── shiena
	└── ansicolor
	└── ansicolor

	9 directories

	$ cat > main.go
	package main
	import "github.com/fatih/color"
	func main() {
	color.Red("Hello, world!")
	}

	$ export GO15VENDOREXPERIMENT=1
	$ go build .
	$ ./hello
	Hello, world!

	$ git add main.go vendor/ && git commit

	</code></pre>

	<p>Full usage on <a href="http://godoc.org/github.com/FiloSottile/gvt">GoDoc <img src="https://godoc.org/github.com/FiloSottile/gvt?status.svg" alt="GoDoc"></a></p>

	<p>If you use <code>gvt</code> for your projects, it would definitely make my day better if you dropped a line at <code>gvt -at- filippo.io</code> :)</p>

	<h2>
	<a id="alternative-not-checking-in-vendored-source" class="anchor" href="#alternative-not-checking-in-vendored-source" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Alternative: not checking in vendored source</h2>

	<p>Some developers prefer not to check in the source of the vendored dependencies. In that case you can add lines like these to e.g. your <code>.gitignore</code></p>

	<pre><code>vendor/**
	!vendor/manifest
	</code></pre>

	<p>When you check out the source again, you can then run <code>gvt restore</code> to fetch all the dependencies at the revisions specified in the <code>vendor/manifest</code> file.</p>

	<p>Please consider that this approach has the following consequences:</p>

	<ul>
	<li>the package consumer will need gvt to fetch the dependencies</li>
	<li>the dependencies will need to remain available from the source repositories: if the original repository goes down or rewrites history, build reproducibility is lost</li>
	<li>
	<code>go get</code> won't work on your package</li>
	</ul>

	<h2>
	<a id="troubleshooting" class="anchor" href="#troubleshooting" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a>Troubleshooting</h2>

	<h3>
	<a id="error-tag-fetch-not-found" class="anchor" href="#error-tag-fetch-not-found" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a><code>error: tag 'fetch' not found.</code>
	</h3>

	<p>This kind of errors happens because you have an alias for <code>gvt</code> pointing to <code>git verify-tag</code>.</p>

	<p>Run this, or add it to your <code>~/.bashrc</code> / <code>~/.zshrc</code>:</p>

	<pre><code>unalias gvt
	</code></pre>

	<h3>
	<a id="go-build-cant-find-the-vendored-package" class="anchor" href="#go-build-cant-find-the-vendored-package" aria-hidden="true"><span aria-hidden="true" class="octicon octicon-link"></span></a><code>go build</code> can't find the vendored package</h3>

	<p>Make sure you set <code>GO15VENDOREXPERIMENT=1</code>.</p>

	<p>Also note that GO15VENDOREXPERIMENT does not apply when outside the GOPATH tree. That is, your project must be somewhere in a subfolder of <code>$GOPATH</code>.</p>
	</article>
	</div>
	</div>
	<footer>
	<div class="owner">
	<p><a href="https://github.com/FiloSottile" class="avatar"><img src="https://avatars3.githubusercontent.com/u/1225294?v=3&s=60" width="48" height="48"></a> <a href="https://github.com/FiloSottile">FiloSottile</a> maintains <a href="https://github.com/FiloSottile/gvt">gvt</a></p>


	</div>
	<div class="creds">
	<small>This page generated using <a href="https://pages.github.com/">GitHub Pages</a><br>theme by <a href="https://twitter.com/jonrohan/">Jon Rohan</a></small>
	</div>
	</footer>
	</div>
	<div class="current-section">
	<a href="#top">Scroll to top</a>
	<a href="https://github.com/FiloSottile/gvt/tarball/master" class="tar">tar</a><a href="https://github.com/FiloSottile/gvt/zipball/master" class="zip">zip</a><a href="" class="code">source code</a>
	<p class="name"></p>
	</div>

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