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* Manual.
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@ -148,6 +148,20 @@ $ rm -rf /nix/var</screen>
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</section>
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</section>
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<section><info><title>Upgrading Nix through Nix</title></info>
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<para>You can install the latest stable version of Nix through Nix
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itself by subscribing to the channel <link
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xlink:href="http://nix.cs.uu.nl/dist/nix/channels-v3/nix-stable" /> ,
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or the latest unstable version by subscribing to the channel<link
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xlink:href="http://nix.cs.uu.nl/dist/nix/channels-v3/nix-unstable" />.
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You can also do a <link linkend="sec-one-click">one-click
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installation</link> by clicking on the package links at <link
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xlink:href="http://nix.cs.uu.nl/dist/nix/" />.</para>
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</section>
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<section><info><title>Permissions</title></info>
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<section><info><title>Permissions</title></info>
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<para>All Nix operations must be performed under the user ID that owns
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<para>All Nix operations must be performed under the user ID that owns
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@ -9,6 +9,8 @@
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<refsynopsisdiv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<cmdsynopsis>
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<command>nix-collect-garbage</command>
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<command>nix-collect-garbage</command>
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<arg><option>--delete-old</option></arg>
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<arg><option>-d</option></arg>
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<group choice='opt'>
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<group choice='opt'>
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<arg choice='plain'><option>--print-roots</option></arg>
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<arg choice='plain'><option>--print-roots</option></arg>
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<arg choice='plain'><option>--print-live</option></arg>
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<arg choice='plain'><option>--print-live</option></arg>
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@ -20,10 +22,28 @@
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<refsection><title>Description</title>
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<refsection><title>Description</title>
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<para>The command <command>nix-collect-garbage</command> is an
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<para>The command <command>nix-collect-garbage</command> is mostly an
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obsolete wrapper around <link
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alias of <link linkend="rsec-nix-store-gc"><command>nix-store
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linkend="rsec-nix-store-gc"><command>nix-store
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--gc</command></link>, that is, it deletes all unreachable paths in
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--gc</command></link>.</para>
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the Nix store to clean up your system. However, it provides an
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additional option <option>-d</option> (<option>--delete-old</option>)
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that deletes all old generations of all profiles in
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<filename>/nix/var/nix/profiles</filename> by invoking
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<literal>nix-env --delete-generations old</literal> on all profiles.
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Of course, this makes rollbacks to previous configurations
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impossible.</para>
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</refsection>
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<refsection><title>Example</title>
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<para>To delete from the Nix store everything that is not used by the
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current generations of each profile, do
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<screen>
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$ nix-collect-garbage -d</screen>
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</para>
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</refsection>
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</refsection>
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@ -44,7 +44,7 @@ xlink:href='http://nix.cs.uu.nl/dist/nix' />.</para>
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Packages, you can view the set of available components in the release:
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Packages, you can view the set of available components in the release:
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<screen>
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<screen>
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$ nix-env -qaf nixpkgs-<replaceable>version</replaceable>
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$ nix-env -qaf nixpkgs-<replaceable>version</replaceable> '*'
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ant-blackdown-1.4.2
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ant-blackdown-1.4.2
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aterm-2.2
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aterm-2.2
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bash-3.0
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bash-3.0
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@ -62,7 +62,7 @@ available components, i.e., whether they are installed into the user
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environment and/or present in the system:
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environment and/or present in the system:
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<screen>
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<screen>
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$ nix-env -qasf nixpkgs-<replaceable>version</replaceable>
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$ nix-env -qasf nixpkgs-<replaceable>version</replaceable> '*'
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...
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...
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-PS bash-3.0
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-PS bash-3.0
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--S binutils-2.15
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--S binutils-2.15
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@ -382,6 +382,19 @@ $ nix-store --gc --print-dead</screen>
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Likewise, the option <option>--print-live</option> will show the paths
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Likewise, the option <option>--print-live</option> will show the paths
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that <emphasis>won’t</emphasis> be deleted.</para>
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that <emphasis>won’t</emphasis> be deleted.</para>
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<para>There is also a convenient little utility
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<command>nix-collect-garbage</command>, which when invoked with the
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<option>-d</option> (<option>--delete-old</option>) switch deletes all
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old generations of all profiles in
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<filename>/nix/var/nix/profiles</filename>. So
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<screen>
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$ nix-collect-garbage -d</screen>
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is a quick and easy way to clean up your system.</para>
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<section xml:id="ssec-gc-roots"><title>Garbage collector roots</title>
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<section xml:id="ssec-gc-roots"><title>Garbage collector roots</title>
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@ -463,4 +476,11 @@ available in the subscribed channels.</para>
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</section>
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</section>
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<section xml:id="sec-one-click"><title>One-click installations</title>
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<para>TODO</para>
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</section>
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</chapter>
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</chapter>
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@ -96,6 +96,16 @@ The latter command will upgrade each installed component for which
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there is a “newer” version (as determined by comparing the version
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there is a “newer” version (as determined by comparing the version
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numbers).</para></listitem>
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numbers).</para></listitem>
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<listitem><para>You can also install specific packages directly from
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your web browser. For instance, you can go to <link
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xlink:href="http://nix.cs.uu.nl/dist/nix/nixpkgs-unstable-latest/" />
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and click on any link for the individual packages for your platform.
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Associate <literal>application/nix-package</literal> with the program
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<filename>/nix/bin/nix-install-package</filename>. A window should
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appear asking you whether it’s okay to install the package. Say
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<literal>Y</literal>. The package and all its dependencies will be
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installed.</para></listitem>
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<listitem><para>If you're unhappy with the result of a
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<listitem><para>If you're unhappy with the result of a
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<command>nix-env</command> action (e.g., an upgraded component turned
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<command>nix-env</command> action (e.g., an upgraded component turned
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out not to work properly), you can go back:
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out not to work properly), you can go back:
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