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Impressive no longer works for me. It briefly brings up a window and then aborts with:

$ impressive demo.pdf
Welcome to Impressive version 0.13.0-WIP (SVN r306)
Platform library: [pygame-unix] Python 3.9.1 / PyGame 2.0.1 / SDL 2.0.14
Detected screen size: 1920x1080 pixels
PDF renderer: MuPDF 1.4 or newer
OpenGL renderer: Quadro M5000/PCIe/SSE2

===============================================================================
OOPS! Impressive crashed!
This shouldn't happen. Please report this incident to the author, including the
full output of the program, particularly the following lines. If possible,
please also send the input files you used.

Impressive version: 0.13.0-WIP (SVN r306)
Python version: 3.9.1 (default, Dec 13 2020, 11:55:53) [GCC 10.2.0]
Impressive platform: pygame-unix
PyGame version: 2.0.1
SDL version: 2.0.14
PIL version: Pillow 8.1.0
PDF renderer: MuPDF 1.4 or newer
OpenGL vendor: NVIDIA Corporation
OpenGL renderer: Quadro M5000/PCIe/SSE2
OpenGL version: 4.6.0 NVIDIA 455.45.01
Operating system: Linux 5.10.4-arch2-1 (x86_64)
Linux distribution: "Arch Linux"
Command line: /usr/bin/impressive demo.pdf
Traceback (most recent call last):
  File "/usr/bin/impressive", line 6523, in run_main
    main()
  File "/usr/bin/impressive", line 6467, in main
    Platform.ScheduleEvent("$timer-update", 100, periodic=True)
  File "/usr/bin/impressive", line 533, in ScheduleEvent
    pygame.time.set_timer(ev_code, msec)
pygame.error: pygame is not initialized

Please don't mark this package as "Out of date" when it doesn't build or if you find a bug, use the comment section instead to report the problem.

The package is building fine. Since 2020/12/09 it's necessary to manually trust the server 'https://svn.emphy.de:443'. The process of doing that is very simple, just build the package in the standard way, using makepkg, and you'll be prompted to accept the corresponding certificate. Feel free to use an AUR helper (trizen, etc) but it is not officially supported, so I don't know if it will handle this correctly.

@keepitsimpleengr I've updated the build() function and now it should only make the necessary files (and you should not encounter the same problem). Please try again with this new version.

~not always workong (/usr/share/texmf-dist/tex/latex/tools/calc.sty))

! LaTeX Error: File `keystroke.sty' not found.

Type X to quit or <RETURN> to proceed, or enter new name. (Default extension: sty)

Enter file name: ! Emergency stop. <read *>

l.7 ^^M

! ==> Fatal error occurred, no output PDF file produced! Transcript written on demo.log. make: *** [Makefile:23: demo.pdf] Error 1

I've updated this package to rev 306 from svn to avoid the segmentation faults. There may be other bugs (fullscreen not working on some windows managers) so this is not an stable version, but at least is working.

A new release may be on its way, but until then I think it's better to use svn than the now-non-working previous release.

This used to work for me, but unfortunately the new version consistently dumps core:

$ impressive x.pdf
Welcome to Impressive version 0.13.0-beta2 (SVN r298)
pygame 2.0.0 (SDL 2.0.12, python 3.8.6)
Hello from the pygame community. https://www.pygame.org/contribute.html
Detected screen size: 1920x1080 pixels
PDF renderer: MuPDF 1.4 or newer
Segmentation fault (core dumped)

Thanks!

@Tio Yes, it's command-line based. You can check its parameters at

http://impressive.sourceforge.net/manual.php

or by executing 'man impressive'. You can change transition style, timer and lots of things by doing so. Hope it helps!

@vicp74 So it is only command-line based? Thanks

I updated this package to the new beta version, which no longer depends on python2 libraries.

I tested it in a few different scenarios, and there is a bug regarding the new python3 code and the pdftk backend. I reported it upstream and it's fixed in the SVN. The next version will work fine with pdftk but, meanwhile, I switched to mupdf, which seems to work every time.

@Tio: Impressive needs to be launched specifying a file. Something like

impressive slides.pdf

In any case, "command line parse error: no playable files specified" means that impressive couldn't find any presentation file. Try launching it from the same folder, something like the example above, to verify there aren't any white spaces in the path.