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<ol class="chapter"><li class="chapter-item expanded "><a href="introduction.html"><strong aria-hidden="true">1.</strong> Introduction</a></li><li class="chapter-item expanded "><a href="start/quick-start.html"><strong aria-hidden="true">2.</strong> Quick Start</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="start/iso.html"><strong aria-hidden="true">2.1.</strong> ISO</a></li><li class="chapter-item expanded "><a href="start/from-nixos.html"><strong aria-hidden="true">2.2.</strong> From NixOS</a></li></ol></li><li class="chapter-item expanded "><a href="layout/layout.html"><strong aria-hidden="true">3.</strong> Layout</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="layout/hosts.html"><strong aria-hidden="true">3.1.</strong> Hosts</a></li><li class="chapter-item expanded "><a href="layout/profiles.html"><strong aria-hidden="true">3.2.</strong> Profiles</a></li><li class="chapter-item expanded "><a href="layout/suites.html"><strong aria-hidden="true">3.3.</strong> Suites</a></li><li class="chapter-item expanded "><a href="layout/users.html"><strong aria-hidden="true">3.4.</strong> Users</a></li><li class="chapter-item expanded "><a href="layout/cachix.html"><strong aria-hidden="true">3.5.</strong> Cachix</a></li></ol></li></ol>
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<div id="content" class="content">
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<main>
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<h1><a class="header" href="#introduction" id="introduction">Introduction</a></h1>
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<p>Nixflk is a template which grants a simple way to use, deploy and manage
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<a href="https://nixos.org/manual/nixos/stable">NixOS</a> systems for personal and productive use. It does this by
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providing a sane repository structure, integrating several popular projects
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like <a href="https://nix-community.github.io/home-manager">home-manager</a>, setting clear guidelines, offering useful
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conveniences, and eliminating boilerplate so you can focus on deploying your
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systems.</p>
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<p>In addition, every package and NixOS profile is built and uploaded to a binary
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cache, so everything provided is available without building anything. This is
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especially useful for the packages that are pulled from master, as without the
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cache, rebuilds are quite frequent.</p>
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<h2><a class="header" href="#community-profiles" id="community-profiles">Community Profiles</a></h2>
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<p>There are two branches from which to choose: core and community. The commuity
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branch builds on core and includes several ready-made profiles for
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discretionary employment.</p>
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<h3><a class="header" href="#-advisory" id="-advisory">⚠ Advisory</a></h3>
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<p>Nixflk leverages the <a href="https://nixos.wiki/wiki/Flakes">flakes</a> feature available via an <em>experimental</em>
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branch of <a href="https://nixos.org/manual/nix/stable">nix</a>. Until nix 3.0 is released, this project should be
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considered unstable.</p>
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<h1><a class="header" href="#license" id="license">License</a></h1>
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<p>Nixflk is licensed under the <a href="https://mit-license.org">MIT License</a>.</p>
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<h1><a class="header" href="#quick-start" id="quick-start">Quick Start</a></h1>
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<p>The only dependency is nix, so make sure you have it <a href="https://nixos.org/manual/nix/stable/#sect-multi-user-installation">installed</a>.</p>
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<h2><a class="header" href="#get-the-template" id="get-the-template">Get the Template</a></h2>
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<p>Here is a snippet that will work as long as <code>nix-shell</code> is in your path:</p>
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<pre><code class="language-sh">nix-shell https://github.com/nrdxp/nixflk/archive/core.tar.gz -A shell \
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--run "flk get core"
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cd flk
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nix-shell
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git init
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git add .
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git commit -m init
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cachix use nrdxp
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</code></pre>
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<blockquote>
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<p>You can change <code>core</code> to <code>community</code> in the call to <code>flk get</code></p>
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</blockquote>
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<p>This will place you in a new folder named <code>flk</code> in the current directory with
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git set up, and a nix-shell that provides all the dependencies, including the
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required nix version. In addition, the cachix cache which contains all the
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binary outputs from this flake is added for faster deployment.</p>
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<h2><a class="header" href="#next-steps" id="next-steps">Next Steps:</a></h2>
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<ul>
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<li><a href="start/./iso.html">Make installable ISO</a></li>
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<li><a href="start/./from-nixos.html">Already on NixOS</a></li>
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<li><a href="start/./from-linux.html">Install from Linux</a></li>
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</ul>
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<h1><a class="header" href="#iso" id="iso">ISO</a></h1>
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<p>Making and writing an installable iso for <code>hosts/NixOS.nix</code> is as simple as:</p>
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<pre><code class="language-sh">flk iso NixOS
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dd bs=4M if=result/iso/*.iso of=/dev/$your_installation_device \
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status=progress oflag=sync
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</code></pre>
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<p>This works for any file matching <code>hosts/*.nix</code> excluding <code>default.nix</code>.</p>
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<h1><a class="header" href="#from-nixos" id="from-nixos">From NixOS</a></h1>
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<h2><a class="header" href="#generate-configuration" id="generate-configuration">Generate Configuration</a></h2>
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<p>Assuming your happy with your existing partition layout, you can generate a
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basic NixOS configuration for your system using:</p>
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<pre><code>flk up
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</code></pre>
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<p>This will make a new file <code>hosts/up-$(hostname).nix</code>, which you can edit to
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your liking.</p>
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<blockquote>
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<p>While the <code>up</code> sub-command is provided as a convenience to quickly set up and
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install a "fresh" NixOS system on current hardware, committing these files is
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discouraged.</p>
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<p>They are placed in the git staging area automatically because they would be
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invisible to the flake otherwise, but it is best to move what you need from
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them directly into a host module of your own making, and commit that instead.</p>
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</blockquote>
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<p>Make sure your <code>i18n.defaultLocale</code> and <code>time.timeZone</code> are set properly for
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your region. Keep in mind that <code>networking.hostName</code> with be automatically
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set to the filename of your hosts file, so <code>hosts/my-host.nix</code> will have the
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hostname <code>my-host</code>.</p>
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<p>Now might be a good time to read the docs on <a href="start/../layout/suites.html">suites</a> and
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<a href="start/../layout/profiles.html">profiles</a> and add or create any that you need.</p>
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<h1><a class="header" href="#installation" id="installation">Installation</a></h1>
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<p>Once your ready to deploy <code>hosts/my-host.nix</code>:</p>
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<pre><code>flk my-host switch
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</code></pre>
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<blockquote>
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<p>Instead of <code>switch</code>, you can pass <code>build</code>, <code>test</code>, <code>boot</code>, etc just as with
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<code>nixos-rebuild</code>.</p>
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</blockquote>
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<p>This calls <code>nixos-rebuild</code> with sudo to build and install your configuration.</p>
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<blockquote>
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<p>It is convenient to have the template living at <code>/etc/nixos</code> so you can
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simply <code>sudo nixos-rebuild switch</code> from anywhere on the system, but it is
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not required.</p>
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</blockquote>
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<h1><a class="header" href="#layout" id="layout">Layout</a></h1>
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<p>This section describes the layout of nixflk and the purpose of each
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subdirectory.</p>
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<h1><a class="header" href="#hosts" id="hosts">Hosts</a></h1>
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<p>Nix flakes contain an output called <code>nixosConfigurations</code> declaring an
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attribute set of valid NixOS systems. To simplify the management and creation
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of these hosts, nixflk automatically imports every <code>*.nix</code> file inside this
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directory to the mentioned attribute set, applying the projects defaults to
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each. The only hard requirement is that the file contain a valid NixOS module.</p>
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<p>As an example, a file <code>hosts/system.nix</code> will be available via the flake
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output <code>nixosConfigurations.system</code>. You can have as many hosts as you want
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and all of them will be automatically imported based on their name.</p>
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<p>For each host, the configuration automatically sets the <code>networking.hostName</code>
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attribute to the name of the file minus the <code>.nix</code> extension. This is for
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convenience, since <code>nixos-rebuild</code> automatically searches for a configuration
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matching the current systems hostname if one is not specified explicitly.</p>
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<p>It is recommended that the host modules only contain configuration information
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specific to a particular piece of hardware. Anything reusable across machines
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is best saved for <a href="layout/./profiles.html">profile modules</a>.</p>
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<p>This is a good place to import sets of profiles, called <a href="layout/./suites.html">suites</a>,
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that you intend to use on your machine.</p>
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<p>Additionally, this is the perfect place to import anything you might need from
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the <a href="https://github.com/NixOS/nixos-hardware">nixos-hardware</a> repository.</p>
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<h2><a class="header" href="#example" id="example">Example</a></h2>
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<p><code>hosts/librem.nix</code>:</p>
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<pre><code class="language-nix">{ suites, hardware, ... }:
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{
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imports = suites.laptop ++ [ hardware.purism-librem-13v3 ];
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boot.loader.systemd-boot.enable = true;
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boot.loader.efi.canTouchEfiVariables = true;
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fileSystems."/" = { device = "/dev/disk/by-label/nixos"; };
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}
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</code></pre>
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<h1><a class="header" href="#profiles" id="profiles">Profiles</a></h1>
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<p>Profiles are simply NixOS modules which contain generic expressions suitable
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for any host. A good example is the configuration for a text editor, or
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window manager. If you need some concrete examples, just checkout the
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community <a href="https://github.com/nrdxp/nixflk/tree/community/profiles">branch</a>.</p>
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<h2><a class="header" href="#constraints" id="constraints">Constraints</a></h2>
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<p>For the sake of consistency, there are a few minor constraints. First of all, a
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profile should always be defined in a <code>default.nix</code>, and it should always be a
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a function taking a single attribute set as an argument, and returning a NixOS
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module which does not define any new module options. If you need to make new
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module option declarations, just use <a href="layout/./modules.html">modules</a>.</p>
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<p>These restrictions help simplify the import logic used to pass profles to
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<a href="layout/./suites.html">suites</a>.</p>
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<h3><a class="header" href="#example-1" id="example-1">Example</a></h3>
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<p>✔<code>profiles/develop/default.nix</code>:</p>
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<pre><code class="language-nix"># good profile definition
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{ ... }:
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{
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programs.zsh.enable = true;
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}
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</code></pre>
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<p>❌<code>profiles/develop.nix</code>:</p>
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<pre><code># bad profile definition
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{
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options = {};
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}
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</code></pre>
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|
<h2><a class="header" href="#subprofiles" id="subprofiles">Subprofiles</a></h2>
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<p>Profiles can also define subprofiles. They follow the same constraints outlined
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above. A good top level profile should be a high level concern, such a your
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personal development environment, and the subprofiles should be more concrete
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program configurations such as your text editor, and shell configs. This way,
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you can either pull in the whole development profile, or pick and choose
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individual programs.</p>
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<h2><a class="header" href="#conclusion" id="conclusion">Conclusion</a></h2>
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<p>Profiles are the most important concept in nixflk. They allow us to keep our
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nix expressions self contained and modular. This way we can maximize reuse
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while minimizing boilerplate. Always strive to keep your profiles as generic
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|
and modular as possible. Anything machine specific belongs in your
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<a href="layout/./hosts.html">host</a> files.</p>
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<h1><a class="header" href="#suites" id="suites">Suites</a></h1>
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<p>Suites provide a mechanism for users to easily combine and name collecitons of
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profiles. For good examples, check out the suites defined in the community
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<a href="https://github.com/nrdxp/nixflk/blob/community/suites/default.nix">branch</a>.</p>
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|
<p>In the future, we will use suites as a mechanism for deploying various machine
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types which don't depend on hardware, such as vm's and containers.</p>
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<h2><a class="header" href="#definition" id="definition">Definition</a></h2>
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<pre><code class="language-nix">rec {
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workstation = [ profiles.develop profiles.graphical users.nixos ];
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mobileWS = workstation ++ [ profiles.laptop ];
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}
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</code></pre>
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<h2><a class="header" href="#usage" id="usage">Usage</a></h2>
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<p><code>hosts/my-laptop.nix</code>:</p>
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<pre><code class="language-nix">{ suites, ... }:
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{
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imports = suites.mobileWS;
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}
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</code></pre>
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<h1><a class="header" href="#users" id="users">Users</a></h1>
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<p>Users are a special case of <a href="layout/./profiles.html">profiles</a> that define system users
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and <a href="https://nix-community.github.io/home-manager">home-manager</a> configurations. For your convenience, home
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|
manager is wired in by default so all you have to worry about is declaring your
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users. For a fully fleshed out example, check out the developers personal
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<a href="https://github.com/nrdxp/nixflk/tree/nrd/users/nrd/default.nix">branch</a>.</p>
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<h2><a class="header" href="#basic-usage" id="basic-usage">Basic Usage</a></h2>
|
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<p><code>users/myuser/default.nix</code>:</p>
|
|
<pre><code class="language-nix">{ ... }:
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|
{
|
|
users.users.myuser = {
|
|
isNormalUser = true;
|
|
};
|
|
|
|
home-manager.users.myuser = {
|
|
programs.mpv.enable = true;
|
|
};
|
|
}
|
|
|
|
</code></pre>
|
|
<h2><a class="header" href="#external-usage" id="external-usage">External Usage</a></h2>
|
|
<p>You can easily use the defined home-manager configurations outside of NixOS
|
|
using the <code>hmActivations</code> meta-package defined in the flakes <code>legacyPackages</code>
|
|
output. The <a href="layout/../flk/flk.html">flk</a> helper script makes this even easier. Just
|
|
make sure you have home-manager
|
|
<a href="https://nix-community.github.io/home-manager/index.html#ch-installation">installed</a>.</p>
|
|
<p>This is great for keeping your environment consistent across Unix systems,
|
|
including OSX.</p>
|
|
<h3><a class="header" href="#from-within-the-projects-devshell" id="from-within-the-projects-devshell">From within the projects devshell:</a></h3>
|
|
<pre><code class="language-sh"># builds the nixos user defined in the NixOS host
|
|
flk home NixOS nixos
|
|
|
|
# activate
|
|
flk home NixOS nixos switch
|
|
</code></pre>
|
|
<h3><a class="header" href="#manually-from-outside-the-project" id="manually-from-outside-the-project">Manually from outside the project:</a></h3>
|
|
<pre><code class="language-sh"># build
|
|
nix build "github:nrdxp/nixflk#hmActivationPackages.NixOS.nixos"
|
|
|
|
# activate
|
|
./result/activate && unlink result
|
|
</code></pre>
|
|
<h1><a class="header" href="#cachix" id="cachix">Cachix</a></h1>
|
|
<p>The cachix directory simple captures the output of <code>sudo cachix use</code> for the
|
|
developers personal cache, as well as the nix-community cache. You can easily
|
|
add your own cache, assuming the template lives in /etc/nixos, by simply
|
|
running <code>sudo cachix use yourcache</code>.</p>
|
|
<p>These caches are only added to the system after a <code>nixos-rebuild switch</code>, so it
|
|
is recommended to call <code>cachix use nrdxp</code> before the initial deployment, as it
|
|
will save a lot of build time.</p>
|
|
<p>In the future, users will be able to skip this step once the ability to define
|
|
the nix.conf within the flake is fully fleshed out upstream.</p>
|
|
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