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119 lines
4.6 KiB
XML
119 lines
4.6 KiB
XML
<section 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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xml:id="sec-pkgs-appimageTools">
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<title>pkgs.appimageTools</title>
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<para>
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<varname>pkgs.appimageTools</varname> is a set of functions for extracting
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and wrapping <link xlink:href="https://appimage.org/">AppImage</link> files.
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They are meant to be used if traditional packaging from source is infeasible,
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or it would take too long. To quickly run an AppImage file,
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<literal>pkgs.appimage-run</literal> can be used as well.
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</para>
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<warning>
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<para>
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The <varname>appimageTools</varname> API is unstable and may be subject to
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backwards-incompatible changes in the future.
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</para>
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</warning>
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<section xml:id="ssec-pkgs-appimageTools-formats">
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<title>AppImage formats</title>
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<para>
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There are different formats for AppImages, see
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<link xlink:href="https://github.com/AppImage/AppImageSpec/blob/74ad9ca2f94bf864a4a0dac1f369dd4f00bd1c28/draft.md#image-format">the
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specification</link> for details.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Type 1 images are ISO 9660 files that are also ELF executables.
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</para>
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</listitem>
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<listitem>
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<para>
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Type 2 images are ELF executables with an appended filesystem.
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</para>
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</listitem>
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</itemizedlist>
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<para>
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They can be told apart with <command>file -k</command>:
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</para>
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<screen>
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<prompt>$ </prompt>file -k type1.AppImage
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type1.AppImage: ELF 64-bit LSB executable, x86-64, version 1 (SYSV) ISO 9660 CD-ROM filesystem data 'AppImage' (Lepton 3.x), scale 0-0,
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spot sensor temperature 0.000000, unit celsius, color scheme 0, calibration: offset 0.000000, slope 0.000000, dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.18, BuildID[sha1]=d629f6099d2344ad82818172add1d38c5e11bc6d, stripped\012- data
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<prompt>$ </prompt>file -k type2.AppImage
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type2.AppImage: ELF 64-bit LSB executable, x86-64, version 1 (SYSV) (Lepton 3.x), scale 232-60668, spot sensor temperature -4.187500, color scheme 15, show scale bar, calibration: offset -0.000000, slope 0.000000 (Lepton 2.x), scale 4111-45000, spot sensor temperature 412442.250000, color scheme 3, minimum point enabled, calibration: offset -75402534979642766821519867692934234112.000000, slope 5815371847733706829839455140374904832.000000, dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.18, BuildID[sha1]=79dcc4e55a61c293c5e19edbd8d65b202842579f, stripped\012- data
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</screen>
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<para>
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Note how the type 1 AppImage is described as an <literal>ISO 9660 CD-ROM
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filesystem</literal>, and the type 2 AppImage is not.
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</para>
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</section>
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<section xml:id="ssec-pkgs-appimageTools-wrapping">
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<title>Wrapping</title>
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<para>
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Depending on the type of AppImage you're wrapping, you'll have to use
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<varname>wrapType1</varname> or <varname>wrapType2</varname>.
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</para>
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<programlisting>
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appimageTools.wrapType2 { # or wrapType1
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name = "patchwork"; <co xml:id='ex-appimageTools-wrapping-1' />
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src = fetchurl { <co xml:id='ex-appimageTools-wrapping-2' />
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url = https://github.com/ssbc/patchwork/releases/download/v3.11.4/Patchwork-3.11.4-linux-x86_64.AppImage;
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sha256 = "1blsprpkvm0ws9b96gb36f0rbf8f5jgmw4x6dsb1kswr4ysf591s";
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};
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extraPkgs = pkgs: with pkgs; [ ]; <co xml:id='ex-appimageTools-wrapping-3' />
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}</programlisting>
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<calloutlist>
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<callout arearefs='ex-appimageTools-wrapping-1'>
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<para>
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<varname>name</varname> specifies the name of the resulting image.
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</para>
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</callout>
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<callout arearefs='ex-appimageTools-wrapping-2'>
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<para>
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<varname>src</varname> specifies the AppImage file to extract.
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</para>
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</callout>
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<callout arearefs='ex-appimageTools-wrapping-2'>
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<para>
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<varname>extraPkgs</varname> allows you to pass a function to include
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additional packages inside the FHS environment your AppImage is going to
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run in. There are a few ways to learn which dependencies an application
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needs:
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<itemizedlist>
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<listitem>
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<para>
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Looking through the extracted AppImage files, reading its scripts and
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running <command>patchelf</command> and <command>ldd</command> on its
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executables. This can also be done in <command>appimage-run</command>,
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by setting <command>APPIMAGE_DEBUG_EXEC=bash</command>.
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</para>
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</listitem>
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<listitem>
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<para>
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Running <command>strace -vfefile</command> on the wrapped executable,
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looking for libraries that can't be found.
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</para>
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</listitem>
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</itemizedlist>
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</para>
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</callout>
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</calloutlist>
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</section>
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</section>
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