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<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-one-click">
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<title>One-Click Installation</title>
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<para>Often, when you want to install a specific package (e.g., from
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the <link
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xlink:href="http://nixos.org/nixpkgs/">Nix
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Packages collection</link>), subscribing to a channel is a bit
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cumbersome. And channels don’t help you at all if you want to install
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an older version of a package than the one provided by the current
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contents of the channel, or a package that has been removed from the
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channel. That’s when <emphasis>one-click installs</emphasis> come in
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handy: you can just go to the web page that contains the package,
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click on it, and it will be installed with all the necessary
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dependencies.</para>
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<para>For instance, you can go to <link
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xlink:href="http://hydra.nixos.org/jobset/nixpkgs/trunk/channel/latest"
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/> and click on any link for the individual packages for your
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platform. The first time you do this, your browser will ask what to
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do with <literal>application/nix-package</literal> files. You should
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open them with <filename>/nix/bin/nix-install-package</filename>.
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This will open a window that asks you to confirm that you want to
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install the package. When you answer <literal>Y</literal>, the
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package and all its dependencies will be installed. This is a binary
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deployment mechanism — you get packages pre-compiled for the selected
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platform type.</para>
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<para>You can also install <literal>application/nix-package</literal>
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files from the command line directly. See <xref
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linkend='sec-nix-install-package' /> for details.</para>
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</chapter> |