AppImage does not start

[srevinsaju]

On Xubuntu 18.04

It looks like you are trying to install swaglyrics on spot using pip. On Xubuntu 18.04, Ubuntu 18.04 and above, python does not include a pip module by default.

AppImage tests failed with this error (related to C#)

===========================================
============= TRYING TO RUN ===============
===========================================
/tmp/.mount_BeingTsTRsEG/AppRun: POSIX shell script, ASCII text executable
-rwxr-xr-x 1 root root 206 Jul 20 14:14 /tmp/.mount_BeingTsTRsEG/AppRun
kernel.unprivileged_userns_clone = 1
Failed to load �]��, error: /var/tmp/.net/SwagLyricsGUI/bvctffl2.1wn/libhostfxr.so: failed to map segment from shared object
The library libhostfxr.so was found, but loading it from /var/tmp/.net/SwagLyricsGUI/bvctffl2.1wn/libhostfxr.so failed
  - Installing .NET Core prerequisites might help resolve this problem.
     https://go.microsoft.com/fwlink/?linkid=2063370
NUMBER_OF_WINDOWS: 0
ERROR: Could not find a single window on screen :-(

Possibly the bundle libhostfxr.so was not bundled on the AppImage, adding that library should fix the error.

PS: Ideally, please package swaglyrics and python3 into the appimage. Sandboxed appimages will not be able to run /usr/bin/python

[probonopd]

Also you might want to check out https://github.com/AppImage/awesome-appimage#deployment-tools-for-python-applications

[flabbet]

@probonopd It's not that simple. I am not bundling full SwagLyrics-For-Spotify library, The AppImage only contains GUI and bridge scripts, that are communicating with SwagLyrics. There are a few solutions. One is to install Python and pip (done by the program itself ofc) or freeze the SwagLyrics lib. The second option is harder, since we would need to keep up to date the GUI and SwagLyrics itself. And the size of AppImage would grow as well.

[srevinsaju]

@flabbet Bundling swaglyrics-for-spotiy frozen would add 9.8 MB to be precise. If you are okay with that increase in size.

[flabbet]

It's not a problem, but it would create a lot of smaller problems:

• We would need to separately freeze lib for all supported platforms
• We would need to rewrite bridge so it works with all frozen libs (platforms)
• For every updated version of SwagLyrics-For-Spotify, we would need to create a GUI update

I would prefer to write a more advanced installer that handles python, pip, and lib installing rather than freeze the lib

[srevinsaju]

Wait, so is Swaglyrics-GUI an installer, and not the app itself?

[flabbet]

It's a GUI version of SwagLyrics-For-Spotify but it installs SwagLyrics if it is missing. It does not include the lib itself

[probonopd]

According to the AppImage philosophy, an AppImage should contain an application and everything it needs to run. Hence the AppImage should contain Python, SwagLyricsGUI, SwagLyrics, and its library, and any of their dependencies.

As a result, users will be able to download the one AppImage file and run SwagLyricsGUI without downloading or installing anything else.

Tools like https://github.com/AppImage/awesome-appimage#deployment-tools-for-python-applications can greatly simplify this process.

Maybe I do not understand what the issue is with this?

[flabbet]

Yeah, makes sense. I guess we should do that. A good solution would be to create distro packages for major distributions, but it's a lot of work too. I don't have the time recently, so if you guys want you can make a PR with lib freeze solution, feel free to do so.