<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> On 07/01/2018 04:54 PM, Alec Leamas wrote: <blockquote type="cite" cite="mid:860849fb-6b6a-b248-1f65-cf0f9b57afeb@gmail.com"> <pre wrap=""> On 01/07/18 18:35, John Stebbins wrote: </pre> <blockquote type="cite"> <pre wrap="">On 07/01/2018 09:20 AM, Alec Leamas wrote: </pre> <blockquote type="cite"> <pre wrap="">Dear list, Yes, I ran into two problems flatpaking opencpn [1]. The other is that opencpn uses a lot of plugins, some of which typically installed in an existing opencpn installation. The question then becomes: how can we accomnplish this in the application sandbox? Can we just drop a pre-built plugin.so in the sandbox? How, then? </pre> </blockquote> </blockquote> <pre wrap=""> </pre> <blockquote type="cite"> <pre wrap="">Yes, it is possible. In flatpak lingo, these are called extensions. There are not a lot of examples out there of application plugins, but Hexchat is one. There is also a current PR for VLC to add plugin support. Hexchat app where it defines the extension point <a class="moz-txt-link-freetext" href="https://github.com/flathub/io.github.Hexchat">https://github.com/flathub/io.github.Hexchat</a> And the Hexchat perl plugin that uses the extension point <a class="moz-txt-link-freetext" href="https://github.com/flathub/io.github.Hexchat.Plugin.Perl">https://github.com/flathub/io.github.Hexchat.Plugin.Perl</a> </pre> </blockquote> <pre wrap=""> Thanks for good pointers! I think I grasp parts of it, but stumble on the fact that flatpack-builder doesn't support building extensions of this kind[1]. Has anyone a working example how to build an extension like this i. e., something which extends an app rather than a runtime? Cheers! </pre> </blockquote> <tt>flatpak-builder certainly does support building an extension like this. The second link I provided is a flatpak manuscript for building the perl plugin for hexchat with flatpak-builder. i.e. to create the extension, you should be able to run something like:</tt><tt> </tt><tt> </tt><tt>flatpak-builder --repo=blah buildDir </tt><tt>io.github.Hexchat.Plugin.Perl.json You would of coarse have to install io.github.Hexchat first since this extension depends on it. I think you may be getting misled by the line </tt> <tt> "runtime": "io.github.Hexchat", in the extension's manufest. It's a small abuse of the "runtime" key. Hexchat is not really a runtime. But from the plugin's perspective, it is. </tt> <pre class="moz-signature" cols="120">-- John GnuPG fingerprint: D0EC B3DB C372 D1F1 0B01 83F0 49F1 D7B2 60D4 D0F7 </pre> </body> </html>