85 lines
2.9 KiB
XML
85 lines
2.9 KiB
XML
<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xml:id="chap-packageconfig">
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<title>nixpkgs global configuration</title>
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<para>
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Nix packages can be configured to allow or deny certain
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options.
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</para>
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<para>
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To apply the configuration edit <filename>~/.nixpkgs/config.nix</filename>
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and set it like
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<programlisting>
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{
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allowUnfree = true;
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}
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</programlisting>
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and will allow the Nix package manager to install unfree licensed packages.
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The configuration as listed also applies to NixOS under <option>nixpkgs.config</option> set.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Allow installing of packages that are distributed under unfree license by setting
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<programlisting>
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allowUnfree = true;
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</programlisting>
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or deny them by setting it to <literal>false</literal>.
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</para>
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<para>
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Same can be achieved by setting the environment variable:
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<programlisting>
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export NIXPKGS_ALLOW_UNFREE=1
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</programlisting>
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</para>
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</listitem>
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<listitem>
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<para>
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Whenever unfree packages are not allowed, single packages can
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still be allowed by a predicate function that accepts package
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as an argument and should return a boolean:
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<programlisting>
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allowUnfreePredicate = (pkg: ...);
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</programlisting>
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Example to allow flash player only:
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<programlisting>
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allowUnfreePredicate = (pkg: pkgs.lib.hasPrefix "flashplayer-" pkg.name);
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</programlisting>
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</para>
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</listitem>
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<listitem>
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<para>
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Whenever unfree packages are not allowed, packages can still be
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whitelisted by their license:
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<programlisting>
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whitelistedLicenses = with stdenv.lib.licenses; [ amd wtfpl ];
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</programlisting>
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</para>
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</listitem>
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<listitem>
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<para>
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In addition to whitelisting licenses which are denied by the
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<literal>allowUnfree</literal> setting, you can also explicitely
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deny installation of packages which have a certain license:
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<programlisting>
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blacklistedLicenses = with stdenv.lib.licenses; [ agpl3 gpl3 ];
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</programlisting>
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</para>
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</listitem>
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</itemizedlist>
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<para>
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A complete list of licenses can be found in the file
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<filename>lib/licenses.nix</filename> of the nix package tree.
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</para>
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</chapter>
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