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doc: modernize meta attributes documentation
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Domen Kožar
parent
c8cd4275a3
commit
e3319eb73d
78
doc/meta.xml
78
doc/meta.xml
@ -17,7 +17,9 @@ meta = {
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It is fully customizable.
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'';
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homepage = http://www.gnu.org/software/hello/manual/;
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license = "GPLv3+";
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license = stdenv.lib.licenses.gpl3Plus;
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maintainers = [ stdenv.lib.maintainers.eelco ];
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platforms = stdenv.lib.platforms.all;
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};
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</programlisting>
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@ -32,15 +34,33 @@ command-line using <command>nix-env</command>:
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<screen>
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$ nix-env -qa hello --meta --xml
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<?xml version='1.0' encoding='utf-8'?>
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<items>
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<item attrPath="hello" name="hello-2.3" system="i686-linux">
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<meta name="description" value="A program that produces a familiar, friendly greeting" />
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<meta name="homepage" value="http://www.gnu.org/software/hello/manual/" />
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<meta name="license" value="GPLv3+" />
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<meta name="longDescription" value="GNU Hello is a program that prints &quot;Hello, world!&quot; when you run it.&#xA;It is fully customizable.&#xA;" />
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</item>
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</items>
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<?xml version='1.0' encoding='utf-8'?>
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<items>
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<item attrPath="nixos.pkgs.hello" name="hello-2.9" system="x86_64-linux">
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<meta name="description" type="string" value="A program that produces a familiar, friendly greeting" />
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<meta name="homepage" type="string" value="http://www.gnu.org/software/hello/manual/" />
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<meta name="license" type="string" value="GPLv3+" />
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<meta name="longDescription" type="string" value="GNU Hello is a program that prints &quot;Hello, world!&quot; when you run it.&#xA;It is fully customizable.&#xA;" />
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<meta name="maintainers" type="strings">
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<string value="Ludovic Courtès &lt;ludo@gnu.org&gt;" />
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</meta>
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<meta name="platforms" type="strings">
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<string value="i686-linux" />
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<string value="x86_64-linux" />
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<string value="armv5tel-linux" />
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<string value="armv7l-linux" />
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<string value="mips64el-linux" />
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<string value="x86_64-darwin" />
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<string value="i686-cygwin" />
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<string value="i686-freebsd" />
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<string value="x86_64-freebsd" />
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<string value="i686-openbsd" />
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<string value="x86_64-openbsd" />
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</meta>
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<meta name="position" type="string" value="/nix/store/cn8zjjdd9kvmp1p5d21h7ya0cr1jhkk3-nixos-14.10pre44264.12f06b3/nixos/nixpkgs/pkgs/applications/misc/hello/ex-2/default.nix:14" />
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</item>
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</items>
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</screen>
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<command>nix-env</command> knows about the
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@ -92,20 +112,22 @@ interpretation:</para>
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<varlistentry>
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<term><varname>license</varname></term>
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<listitem><para>The license for the package. See below for the
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allowed values.</para></listitem>
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<listitem><para>The license for the package. One from attribute set defined in
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<link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/lib/licenses.nix">
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<filename>nixpkgs/lib/licenses.nix</filename></link>.
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Example:
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<literal>stdenv.lib.licenses.gpl3</literal>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>maintainers</varname></term>
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<listitem><para>A list of names and e-mail addresses of the
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maintainers of this Nix expression, e.g. <literal>["Alice
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<alice@example.org>" "Bob <bob@example.com>"]</literal>. If
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you are the maintainer of multiple packages, you may want to add
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maintainers of this Nix expression. If
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you would like to be a maintainer of a package, you may want to add
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yourself to <link
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xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/lib/maintainers.nix"><filename>pkgs/lib/maintainers.nix</filename></link>
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and write something like <literal>[stdenv.lib.maintainers.alice
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stdenv.lib.maintainers.bob]</literal>.</para></listitem>
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xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/lib/maintainers.nix"><filename>nixpkgs/lib/maintainers.nix</filename></link>
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and write something like <literal>[ stdenv.lib.maintainers.alice
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stdenv.lib.maintainers.bob ]</literal>.</para></listitem>
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</varlistentry>
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<varlistentry>
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@ -121,29 +143,23 @@ interpretation:</para>
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<varlistentry>
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<term><varname>platforms</varname></term>
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<listitem><para>The list of Nix platform types on which the
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package is supported. If this attribute is set, the package will
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refuse to build, and won’t show up in <literal>nix-env
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-qa</literal> output, on any platform not listed
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here. An example is:
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package is supported. An example is:
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<programlisting>
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meta.platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
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</programlisting>
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The set <varname>lib.platforms</varname> defines various common
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lists of platforms types, so it’s more typical to write:
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<programlisting>
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meta.platforms = stdenv.lib.platforms.linux ++ stdenv.lib.platforms.darwin;
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meta.platforms = stdenv.lib.platforms.linux;
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</programlisting>
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Attribute Set <varname>stdenv.lib.platforms</varname> in
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<link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/lib/platforms.nix">
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<filename>nixpkgs/lib/platforms.nix</filename></link> defines various common
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lists of platforms types.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>hydraPlatforms</varname></term>
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<listitem><para>The list of Nix platform types for which the Hydra
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instance at <literal>hydra.nixos.org</literal> should build the
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instance at <literal>hydra.nixos.org</literal> will build the
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package. (Hydra is the Nix-based continuous build system.) It
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defaults to the value of <varname>meta.platforms</varname>. Thus,
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the only reason to set <varname>meta.hydraPlatforms</varname> is
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@ -17,8 +17,7 @@ stdenv.mkDerivation rec {
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It is fully customizable.
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'';
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homepage = http://www.gnu.org/software/hello/manual/;
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license = "GPLv3+";
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license = stdenv.lib.licenses.gpl3Plus;
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maintainers = [ stdenv.lib.maintainers.ludo ];
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platforms = stdenv.lib.platforms.all;
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};
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