Pkg2appimage fails to download package gir1.2-gspell-1, gir1.2-gst-plugins-base-1.0

commandos · May 7, 2020, 5:42am

I’m trying to build appimage of gajim, but among the packages two of them are not being installed because of unsatisfied dependency. Here is a small demo:

gajim.yml

app: gajim

ingredients:
  dist: focal
  sources: 
    - deb http://us.archive.ubuntu.com/ubuntu focal main universe multiverse restricted
    - deb http://us.archive.ubuntu.com/ubuntu/ focal-updates main universe multiverse restricted

  packages:
    - gir1.2-gspell-1
    - gir1.2-gst-plugins-base-1.0

when I try to build this recipe I get the following errors:

libegl-mesa0:amd64 Depends on libgbm1:amd64 < 9:999.999.999 @ii mK > (= 20.0.4-2ubuntu1) can't be satisfied!
gir1.2-pango-1.0:amd64 Depends on libpango-1.0-0:amd64 < 9:999.999.999 @ii mK > (= 1.44.7-2ubuntu4) can't be satisfied!

I’ve checked the forum and the appimage wiki. I don’t know how to solve this issue.

probono · May 16, 2020, 12:47pm

Hi @commandos, you will need to use the pretend key to pretend that the exact versions of those two libraries are installed.

github.com

AppImage/pkg2appimage/blob/master/YML.md#pretending-certain-versions-of-dependencies-being-installed

# About `.yml` files

The easiest way to build an AppImage is to write a `.yml` file. We developed a rather simple format that allows developers to write a `app.yml` file that describes how to build an AppImage for `app`, being able to reuse pre-built binaries, e.g. from Debian packages, both to save time for creating and building an AppImage.

This document provides an introduction to the `.yml` files' purpose, their structure and a few examples describing how to use all the advanced features.


## Purpose of `.yml` files

`.yml` is the file extension commonly used for _YAML_ (_Yet Another Markup Language_, nowadays also serves as an abbreviation for _YAML Ain’t Markup Language_).

YAML's approach to describing data is to combine associative lists (known as `dict`s in Python or `object literal`s in JavaScript, for example), lists (arrays) and scalar values. This results in an easy to parse and also easy to read format.

The `.yml` files are used by [`pkg2appimage`](https://github.com/AppImage/AppImages/blob/master/pkg2appimage) which is used in the _AppImages_ project to convert binary _ingredients_ into AppImages for demonstration purposes. Their primary objective is to make it very simple to convert pre-existing binaries into the AppImage format. If you can build your software from source, you may generate AppImages directly as part of your build workflow; in this case you may not need a `.yml` file (but a Travis CI `.travis.yml` and/or a `Makefile`, etc.).

The `.yml` file format is not part of the AppImage standard, which just describes the AppImage container format and is agnostic as to how the payload inside an AppImage gets generated. Neither it is part of AppImageKit, because AppImageKit is only concerned with taking a pre-existing _AppDir_ and converting that into an AppImage. Such an AppDir is created from the instructions stored in the `.yml` files, and converted to an AppImage using _AppImageKit_.



## General anatomy of `.yml` files

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Even better though, ask the Gaijm developers to provide an official AppImage for download.

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Pkg2appimage fails to download package gir1.2-gspell-1, gir1.2-gst-plugins-base-1.0

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