GNU bug report logs - #51826
qt packages (e.g. pcmanfm-qt) missing wayland qt module

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 51826 in the body.
You can then email your comments to 51826 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "bdju" <bdju <at> tilde.team>
To: <bug-guix <at> gnu.org>
Subject: qt packages (e.g. pcmanfm-qt) missing wayland qt module
Date: Sat, 13 Nov 2021 21:59:27 -0600

I am running Guix System with Sway
guix (GNU Guix) 33a80e111096b05af3d60576dfcb2d67099dc60e

Running `QT_QPA_PLATFORM=wayland pcmanfm-qt` results in failure to
launch and the following errors:

```
21:50:38.413|qt.qpa.plugin|W|Could not find the Qt platform plugin "wayland" in ""
21:50:38.413|default|F|This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.

zsh: abort      QT_QPA_PLATFORM=wayland pcmanfm-qt
```

Due to this problem, I cannot set this env var for my whole profile or
many programs will break. This means they run with xwayland instead of
native wayland. I have run some of these same programs on another
distro (postmarketOS on a Pinebook Pro) and found they run in Sway.

I believe this is likely a packaging issue with qt stuff.

Message #8 received at 51826 <at> debbugs.gnu.org (full text, mbox):

From: Josselin Poiret <dev <at> jpoiret.xyz>
To: bdju <bdju <at> tilde.team>, 51826 <at> debbugs.gnu.org
Cc: dev <at> jpoiret.xyz
Subject: Re: bug#51826: qt packages (e.g. pcmanfm-qt) missing wayland qt module
Date: Sun, 14 Nov 2021 13:44:17 +0000

Hello,

This plugin is packaged as a part of qtwayland, and `guix shell --pure
--preserve="^(XDG_|WAYLAND_DISPLAY)" bash pcmanfm-qt qtwayland -- bash
-c "QT_QPA_PLATFORM=wayland pcmanfm-qt"` does work as expected (whereas
it does not if I leave out qtwayland).  You might want to install
qtwayland in your profile for it to work.

Best,
Josselin Poiret

Message #11 received at 51826 <at> debbugs.gnu.org (full text, mbox):

From: "bdju" <bdju <at> tilde.team>
To: "Josselin Poiret" <dev <at> jpoiret.xyz>, <51826 <at> debbugs.gnu.org>
Subject: Re: bug#51826: qt packages (e.g. pcmanfm-qt) missing wayland qt module
Date: Sun, 14 Nov 2021 18:13:41 -0600

On Sun Nov 14, 2021 at 7:44 AM CST, Josselin Poiret wrote:
> Hello,
>
> This plugin is packaged as a part of qtwayland, and `guix shell --pure
> --preserve="^(XDG_|WAYLAND_DISPLAY)" bash pcmanfm-qt qtwayland -- bash
> -c "QT_QPA_PLATFORM=wayland pcmanfm-qt"` does work as expected (whereas
> it does not if I leave out qtwayland). You might want to install
> qtwayland in your profile for it to work.
>
> Best,
> Josselin Poiret
Thanks, installing that does indeed get pcmanfm-qt to launch, although
the right click menu and file menus seem to be invisible! I had to open
up a pcmanfm-qt without this env var to see how to get to preferences
blindly. (alt-e alt-e will open edit then preferences). The missing
right click menu is even worse since what's under the menu can vary,
especially the "open with" menu.

Also, should this have been a dependency of something? I definitely
didn't install it manually on postmarketOS (alpine-based).

Message #14 received at 51826 <at> debbugs.gnu.org (full text, mbox):

From: Efraim Flashner <efraim <at> flashner.co.il>
To: bdju <bdju <at> tilde.team>
Cc: Josselin Poiret <dev <at> jpoiret.xyz>, 51826 <at> debbugs.gnu.org
Subject: Re: bug#51826: qt packages (e.g. pcmanfm-qt) missing wayland qt module
Date: Tue, 16 Nov 2021 21:12:46 +0200

[Message part 1 (text/plain, inline)]

On Sun, Nov 14, 2021 at 06:13:41PM -0600, bdju via Bug reports for GNU Guix wrote:
> On Sun Nov 14, 2021 at 7:44 AM CST, Josselin Poiret wrote:
> > Hello,
> >
> > This plugin is packaged as a part of qtwayland, and `guix shell --pure
> > --preserve="^(XDG_|WAYLAND_DISPLAY)" bash pcmanfm-qt qtwayland -- bash
> > -c "QT_QPA_PLATFORM=wayland pcmanfm-qt"` does work as expected (whereas
> > it does not if I leave out qtwayland). You might want to install
> > qtwayland in your profile for it to work.
> >
> > Best,
> > Josselin Poiret
> Thanks, installing that does indeed get pcmanfm-qt to launch, although
> the right click menu and file menus seem to be invisible! I had to open
> up a pcmanfm-qt without this env var to see how to get to preferences
> blindly. (alt-e alt-e will open edit then preferences). The missing
> right click menu is even worse since what's under the menu can vary,
> especially the "open with" menu.
> 
> Also, should this have been a dependency of something? I definitely
> didn't install it manually on postmarketOS (alpine-based).

I have qtwayland installed in my profile too. I have a couple of qt
programs which need it installed to use. It is better than before, where
each package had to be modified to support displaying on wayland, but
I'm not sure where we would inject qtwayland in the qt/kde build stack
to make sure everything builds against it.

-- 
Efraim Flashner   <efraim <at> flashner.co.il>   רנשלפ םירפא
GPG key = A28B F40C 3E55 1372 662D  14F7 41AA E7DC CA3D 8351
Confidentiality cannot be guaranteed on emails sent or received unencrypted

[signature.asc (application/pgp-signature, inline)]

Message #17 received at 51826 <at> debbugs.gnu.org (full text, mbox):

From: Genevieve <genevieve <at> sunlashed.garden>
To: 51826 <at> debbugs.gnu.org
Subject: qt packages (e.g. pcmanfm-qt) missing wayland qt module
Date: Sun, 29 Jan 2023 15:24:12 -0600

> `guix shell --pure --preserve="^(XDG_|WAYLAND_DISPLAY)"
> bash pcmanfm-qt qtwayland -- bash -c
> "QT_QPA_PLATFORM=wayland pcmanfm-qt"`
> does work as expected 

Unfortunately I'm still experiencing this regression no matter
what I try, and the above command gives

    qt.qpa.plugin: Could not find the Qt platform plugin "wayland" in ""

Additionally, searching for qtwayland files in my guix profile only finds
license files in ~/.guix-profile/share/doc/qtwayland-6.3.1/...

So something is clearly not being installed, but I'm not sure where
to start with debugging this.

Message #20 received at 51826 <at> debbugs.gnu.org (full text, mbox):

From: Josselin Poiret <dev <at> jpoiret.xyz>
To: genevieve <at> sunlashed.garden, 51826 <at> debbugs.gnu.org
Subject: Re: bug#51826: qt packages (e.g. pcmanfm-qt) missing wayland qt module
Date: Thu, 02 Feb 2023 18:19:38 +0100

Hi Genevieve,

Genevieve via Bug reports for GNU Guix <bug-guix <at> gnu.org> writes:

> Additionally, searching for qtwayland files in my guix profile only finds
> license files in ~/.guix-profile/share/doc/qtwayland-6.3.1/...

We now have qtwayland <at> 6 as well, so by default guix will consider
qtwayland to be qtwayland <at> 6.  I'd say you need to put qtwayland <at> 5 in the
above shell incantation. This is definitely something that we should fix
on core-updates, to have qtbase always include the corresponding
qtwayland.

Best,
-- 
Josselin Poiret

Message #25 received at 51826-done <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: "bdju" <bdju <at> tilde.team>
Cc: Josselin Poiret <dev <at> jpoiret.xyz>, Efraim Flashner <efraim <at> flashner.co.il>,
 Genevieve <genevieve <at> sunlashed.garden>, 51826-done <at> debbugs.gnu.org
Subject: Re: bug#51826: qt packages (e.g. pcmanfm-qt) missing wayland qt module
Date: Tue, 28 Mar 2023 20:41:38 -0400

Hello,

"bdju" <bdju <at> tilde.team> writes:

> I am running Guix System with Sway
> guix (GNU Guix) 33a80e111096b05af3d60576dfcb2d67099dc60e
>
> Running `QT_QPA_PLATFORM=wayland pcmanfm-qt` results in failure to
> launch and the following errors:
>
> ```
> 21:50:38.413|qt.qpa.plugin|W|Could not find the Qt platform plugin "wayland" in ""
> 21:50:38.413|default|F|This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
>
> Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.
>
> zsh: abort      QT_QPA_PLATFORM=wayland pcmanfm-qt

I believe the modern manifestation of this problem was #57742, now fixed
on the staging branch (see commit e4ef2db8fda85a469a6fc89bf3c46c9d7e8d44ea).

-- 
Thanks,
Maxim

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.