forked from lix-project/hydra
draft manual
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Eelco Visser
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<html>
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<head>
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<link rel="stylesheet" href="style.css" type="text/css">
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</head>
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<body>
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<hr>
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<h1>The Hydra Buildfarm User Manual</h1>
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<h2>Draft (Version 0.1)</h2>
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<p/>
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<h3>Eelco Dolstra and Eelco Visser</h3>
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<p/>
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Delft University of Technology
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<p/>
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Department of Software Technology
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<p/>
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Copyright 2008 Eelco Dolstra
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<hr>
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<h2>Chapter 1. Introduction</h2>
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<h3>1.1. About Hydra</h3>
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Hydra is a buildfarm system based on the Nix software deployment
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system.
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<p/>
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... advantages ...
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<p/>
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<p/>
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<p/>
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<h3>1.2. Hydra at nixos.org</h3>
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The nixos.org installation of Hydra runs at
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<blockquote>
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<a href="http://hydra.nixos.org/">http://hydra.nixos.org</a>
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</blockquote>
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That installation is used to build software components from the
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<a href="http://nixos.org">Nix</a>,
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<a href="http://nixos.org/nixos">NixOS</a>,
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<a href="http://strategoxt.org">Stratego/XT</a>,
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and related projects.
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If you are one of the developers on those projects, it is likely that
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you will be using the NixOS Hydra server in some way. If you need to
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administer automatic builds for your project, you should pull the
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right strings to get an account on the server. This manual will tell
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you how to set up new projects and build jobs within those projects
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and write a release.nix file to describe the build process of your
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project to Hydra. You can skip Chapter 2.
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<p/>
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If your project does not yet have automatic builds within the NixOS
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Hydra server, it may actually be eligible. We are in the process of
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setting up a large buildfarm that should be able to support open
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source and academic software projects. Get in touch.
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<h3>1.3. Hydra on your own buildfarm</h3>
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If you need to run your own Hydra installation, Chapter 2 explains
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how to download and install the system on your own server.
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<h2>Chapter 2. Installation and Configuration</h2>
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This chapter explains how to install Hydra on your own buildfarm server.
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We assume that you have
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<h3>2.1. Platform Requirements</h3>
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To run Hydra you need a Linux server with at least a considerable
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amount of diskspace to store builds. A multi-core machine is not a
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waste since Hydra can schedule multiple simultaneous build jobs.
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<p/>
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Of course we think it is a good idea to use the <a
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href="http://nixos.org/nixos">NixOS</a> Linux distribution for your
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buildfarm server. But this is not a requirement. The Nix software
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deployment system can be installed on any Linux distribution in
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parallel to the regular package management system. Thus, you can use
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Hydra on a Suse, Fedora, or Ubuntu system.
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<p/>
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Hydra on Windows??
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<h3>2.2. Getting Nix</h3>
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If your server runs NixOS you are all set to continue with
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installation of Hydra. Otherwise you first need to install Nix.
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The <a href="http://nixos.org/releases/nix/nix-0.12">latest stable release</a> is Nix 0.12.
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Installation instructions can be found in the
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<a href="http://nixos.org/releases/nix/nix-0.12/manual/">Nix User's Guide</a>.
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<p/>
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Why Nix ...
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<h3>2.3. Installation</h2>
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To install Hydra, get the most recent 'closure' available from
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<blockquote>
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<a href="http://hydra.nixos.org/releases/hydra/unstable">http://hydra.nixos.org/releases/hydra/unstable</a>
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</blockquote>
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And follow the instructions that are revealed by clicking [help].
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<pre class="programlisting">
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$ gunzip < hydra-build.closure.gz | nix-store --import
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</pre>
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This unpacks the closure and imports its components into the Nix store.
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<pre class="programlisting">
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$ nix-env -i /nix/store/...-hydra-build
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</pre>
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This makes the tools in the Hydra package available in your Nix user
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environment.
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<p/>
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Command completion should then reveal a number of tools related to
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hydra installed:
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<pre class="programlisting">
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$ hydra_<tab>
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hydra_build.pl hydra_fastcgi.pl hydra_scheduler.pl
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hydra_cgi.pl hydra_init.pl hydra_server.pl
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hydra_create.pl hydra_queue_runner.pl hydra_test.pl
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</pre>
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<h3>2.4. Configuration</h3>
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The Hydra software is installed in the Nix store, but to run it needs
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a directory for storing the database, logs, and session data. In your
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<code>.bashrc</code> or similar configuration file define:
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<pre class="programlisting">
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export HYDRA_DATA=/usr/local/hydra
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</pre>
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and make sure that you actually create that directory. (Of course, you
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can use another directory, but then remember to also substitute that
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name in the commands below.)
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<p/>
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Run <code>hydra_init.pl</code> to initialize the database
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<pre class="programlisting">
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$ hydra_init.pl
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</pre>
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Run <code>hydra_server.pl</code> to start the webserver at <a href="http://localhost:3000">http://localhost:3000</a>
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<pre class="programlisting">
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$ hydra_server.pl
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</pre>
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Also start the scheduler, which monitors the source repositories and
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adds builds to the queue, and the runner, which executes jobs in the
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queue.
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<pre class="programlisting">
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$ hydra_scheduler.pl
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$ hydra_queue_runner.pl
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</pre>
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Now your Hydra server should be up and running and the web interface
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operational.
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<h3>2.5. User Administration</h3>
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To be able to add jobs and create projects you need to register users
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in the Hydra database. In the current version, the web interface does
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not yet support user administration. Use the following command to add
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a new user to the database.
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<pre class="programlisting">
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$ sqlite3 /usr/local/hydra/hydra.sqlite "insert into Users(userName, emailAddress, password) values('eelco', 'blablah@example.org', '$(echo -n foobar | sha1sum | cut -c1-40)');"
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</pre>
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where <code>eelco</code> is the username, and <code>foobar</code> the
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password. (Make sure to use other values!)
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<p/>
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To give this user administrator privileges, follow this up by:
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<pre class="programlisting">
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$ sqlite3 /usr/local/hydra/hydra.sqlite "insert into UserRoles(userName, role) values('eelco', 'admin');"
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</pre>
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Now you should be able to create a project using the Hydra web interface.
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<h2>Chapter 3. Creating Projects</h2>
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The next step is to add projects to the buildfarm. We follow the
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example of the patchelf project at hydra.nixos.org. Note that the
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error messages provided as feedback by the webinterface can be
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somewhat unfriendly in the current version.
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<p/>
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<a href="http://localhost:3000/login">Login</a>
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to the webinterface of your Hydra installation using
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the username and password you inserted in the database.
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Then follow the
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'<a href="http://localhost:3000/createproject">Create Project</a>'
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link to create a new project.
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<h3>3.1. General information</h3>
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A project definition consists of some general information
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The general information of a project are mainly its name and
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owner. Here's what we fill in for the patchelf project:
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<pre class="programlisting">
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Identifier: patchelf
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Display name: Patchelf
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Description: A tool for modifying ELF binaries
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Owner: eelco
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Enabled: Yes
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</pre>
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The <code>Identifier</code> should be a unique name (it is the primary
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database key for the project table in the database). If you try to
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create a project with an already existing identifier you'd get an
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error message such as:
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<pre>
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I'm very sorry, but an error occurred:
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DBIx::Class::ResultSet::create(): DBI Exception: DBD::SQLite::st execute failed: column name is not unique(19) at dbdimp.c line 402
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</pre>
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So try to create the project after entering just the general
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information to figure out if you have chosen a unique name.
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Jobsets can be added once the project has been created.
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<p/>
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Once create there should be an entry for the project in the sidebar. Go to
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the project page for the
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<a href="http://localhost:3000/project/patchelf">Patchelf</a>
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project.
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<h3>Jobsets</h3>
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A project can consist of multiple `jobsets', separate tasks that can
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be built separately, but may depend on each other (without cyclic
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dependencies, of course). Go to the
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<a href="http://localhost:3000/project/patchelf/edit">Edit</a>
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page of the Patchelf project and 'Add a new jobset'
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by providing the following 'Information':
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<pre>
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Identifier: trunk
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Description: Trunk
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Nix expression: release.nix in input patchelfSrc
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</pre>
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This states that in order to build the 'Trunk' jobset, the Nix
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expression in the file 'release.nix', which can be obtained from input
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'patchelfSrc', should be evaluated. (We'll have a look at release.nix
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later.)
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<p/>
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To realize a job we probably need a number of inputs, which can be
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declared in the table below. As many inputs as required can be added.
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For patchelf we declare the following inputs.
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<pre>
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nixpkgs 'CVS checkout' https://svn.nixos.org/repos/nix/nixpkgs/trunk
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</pre>
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<pre>
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officialRelease Boolean false
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</pre>
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<pre>
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patchelfSrc Subversion checkout https://svn.nixos.org/repos/nix/patchelf/trunk
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</pre>
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<pre>
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system String value "i686-linux"
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</pre>
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nixpkgs
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officialRelease
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patchelfSrc
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system
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<h3>Release Set</h3>
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there must be one primary job
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check the radio button of exactly one job
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https://svn.nixos.org/repos/nix/nixpkgs/trunk
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<h3>Building Jobs</h3>
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<h3>release.nix</h3>
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- Voorbeelden van Nix expressies voor Hydra:
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https://svn.nixos.org/repos/nix/patchelf/trunk/release.nix
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https://svn.nixos.org/repos/nix/nix/trunk/release.nix
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https://svn.nixos.org/repos/nix/hydra/trunk/release.nix
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<h3>Building on the command line</h3>
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Overigens zijn die helemaal niet Hydra-specifiek, je kunt ze gewoon vanaf de
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command line bouwen, bijv. als je een patchelf checkout hebt (met een nixpkgs
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checkout in ../nixpkgs):
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$ nix-build release.nix -A rpm_fedora10i386
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<h3>Release Set</h3>
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</body>
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</html>
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/* Copied from http://bakefile.sourceforge.net/, which appears
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licensed under the GNU GPL. */
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/***************************************************************************
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Basic headers and text:
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***************************************************************************/
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body
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{
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font-family: sans-serif;
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background: white;
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margin: 2em 1em 2em 1em;
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}
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h1,h2,h3
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{
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color: #005aa0;
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text-align: left;
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}
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h1 /* title */
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{
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font-size: 200%;
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}
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h2 /* chapters, appendices, subtitle */
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{
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font-size: 180%;
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}
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/* Extra space between chapters, appendices. */
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div.chapter > div.titlepage h2, div.appendix > div.titlepage h2
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{
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margin-top: 1.5em;
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}
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div.section > div.titlepage h2 /* sections */
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{
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font-size: 150%;
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margin-top: 1.5em;
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}
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h3 /* subsections */
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{
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font-size: 125%;
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}
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div.simplesect h2
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{
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font-size: 110%;
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}
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div.appendix h3
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{
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font-size: 150%;
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margin-top: 1.5em;
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}
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||||||
|
|
||||||
|
div.refnamediv h2, div.refsynopsisdiv h2, div.refsection h2 /* refentry parts */
|
||||||
|
{
|
||||||
|
margin-top: 1.4em;
|
||||||
|
font-size: 125%;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.refsection h3
|
||||||
|
{
|
||||||
|
font-size: 110%;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/***************************************************************************
|
||||||
|
Examples:
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
div.example
|
||||||
|
{
|
||||||
|
border: 1px solid #6185a0;
|
||||||
|
padding: 6px 6px;
|
||||||
|
margin-left: 1.5em;
|
||||||
|
margin-right: 1.5em;
|
||||||
|
background: #f4f4f8;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.example p.title
|
||||||
|
{
|
||||||
|
margin-top: 0em;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/***************************************************************************
|
||||||
|
Screen dumps:
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
pre.screen, pre.programlisting
|
||||||
|
{
|
||||||
|
border: 1px solid #6185a0;
|
||||||
|
padding: 3px 3px;
|
||||||
|
margin-left: 1.5em;
|
||||||
|
margin-right: 1.5em;
|
||||||
|
color: #600000;
|
||||||
|
background: #f4f4f8;
|
||||||
|
font-family: monospace;
|
||||||
|
/* font-size: 90%; */
|
||||||
|
}
|
||||||
|
|
||||||
|
div.example pre.programlisting
|
||||||
|
{
|
||||||
|
border: 0px;
|
||||||
|
padding: 0 0;
|
||||||
|
margin: 0 0 0 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/***************************************************************************
|
||||||
|
Notes, warnings etc:
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
.note, .warning
|
||||||
|
{
|
||||||
|
border: 1px solid #6185a0;
|
||||||
|
padding: 3px 3px;
|
||||||
|
margin-left: 1.5em;
|
||||||
|
margin-right: 1.5em;
|
||||||
|
margin-bottom: 1em;
|
||||||
|
padding: 0.3em 0.3em 0.3em 0.3em;
|
||||||
|
background: #fffff5;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.note, div.warning
|
||||||
|
{
|
||||||
|
font-style: italic;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.note h3, div.warning h3
|
||||||
|
{
|
||||||
|
color: red;
|
||||||
|
font-size: 100%;
|
||||||
|
// margin: 0 0 0 0;
|
||||||
|
padding-right: 0.5em;
|
||||||
|
display: inline;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.note p, div.warning p
|
||||||
|
{
|
||||||
|
margin-bottom: 0em;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.note h3 + p, div.warning h3 + p
|
||||||
|
{
|
||||||
|
display: inline;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.note h3
|
||||||
|
{
|
||||||
|
color: blue;
|
||||||
|
font-size: 100%;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.navfooter *
|
||||||
|
{
|
||||||
|
font-size: 90%;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/***************************************************************************
|
||||||
|
Links colors and highlighting:
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
a:link { color: #0048b3; }
|
||||||
|
a:visited { color: #002a6a; }
|
||||||
|
a:hover { background: #ffffcd; }
|
||||||
|
|
||||||
|
|
||||||
|
/***************************************************************************
|
||||||
|
Table of contents:
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
.toc
|
||||||
|
{
|
||||||
|
font-size: 90%;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/***************************************************************************
|
||||||
|
Special elements:
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
tt, code
|
||||||
|
{
|
||||||
|
color: #400000;
|
||||||
|
}
|
||||||
|
|
||||||
|
.term
|
||||||
|
{
|
||||||
|
font-weight: bold;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
div.variablelist dd p, div.glosslist dd p
|
||||||
|
{
|
||||||
|
margin-top: 0em;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.variablelist dd, div.glosslist dd
|
||||||
|
{
|
||||||
|
margin-left: 1.5em;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.glosslist dt
|
||||||
|
{
|
||||||
|
font-style: italic;
|
||||||
|
}
|
||||||
|
|
||||||
|
.default
|
||||||
|
{
|
||||||
|
font-style: italic;
|
||||||
|
}
|
||||||
|
|
||||||
|
.availability
|
||||||
|
{
|
||||||
|
font-style: italic;
|
||||||
|
}
|
||||||
|
|
||||||
|
.varname
|
||||||
|
{
|
||||||
|
color: #400000;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
div.informaltable table
|
||||||
|
{
|
||||||
|
border: 1px solid #6185a0;
|
||||||
|
width: 100%;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.informaltable td
|
||||||
|
{
|
||||||
|
border: 0;
|
||||||
|
padding: 5px;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.informaltable td.default
|
||||||
|
{
|
||||||
|
text-align: right;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.informaltable th
|
||||||
|
{
|
||||||
|
text-align: left;
|
||||||
|
color: #005aa0;
|
||||||
|
border: 0;
|
||||||
|
padding: 5px;
|
||||||
|
background: #fffff5;
|
||||||
|
font-weight: normal;
|
||||||
|
font-style: italic;
|
||||||
|
}
|
||||||
|
|
||||||
|
td.varname, td.tagname, td.paramname
|
||||||
|
{
|
||||||
|
font-weight: bold;
|
||||||
|
vertical-align: top;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.epigraph
|
||||||
|
{
|
||||||
|
font-style: italic;
|
||||||
|
text-align: right;
|
||||||
|
}
|
||||||
|
|
||||||
|
table.productionset table.productionset
|
||||||
|
{
|
||||||
|
font-family: monospace;
|
||||||
|
}
|
||||||
|
|
||||||
|
strong.command
|
||||||
|
{
|
||||||
|
// font-family: monospace;
|
||||||
|
// font-style: italic;
|
||||||
|
// font-weight: normal;
|
||||||
|
color: #400000;
|
||||||
|
}
|
||||||
|
|
||||||
|
div.calloutlist td
|
||||||
|
{
|
||||||
|
padding-bottom: 1em;
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue