[PATCH] gnu: cura: Make it work on wayland.

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3 participants
  • Morgan Smith
  • Demis Balbach
  • Christopher Baines
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unassigned
Submitted by
Demis Balbach
Severity
normal
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Demis Balbach wrote on 21 Nov 2022 18:14
(address . guix-patches@gnu.org)(name . Demis Balbach)(address . db@minikn.xyz)
20221121171403.30222-1-db@minikn.xyz
* gnu/packages/engineering.scm (cura): Make it work on wayland.
---
gnu/packages/engineering.scm | 1 +
1 file changed, 1 insertion(+)

Toggle diff (14 lines)
diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index 43e23e30a8..42537364e6 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -3780,6 +3780,7 @@ (define-public cura
(lambda* (#:key outputs #:allow-other-keys)
(let ((out (assoc-ref outputs "out")))
(wrap-program (string-append out "/bin/cura")
+ '("QT_QPA_PLATFORM" = ("xcb"))
(list "GUIX_PYTHONPATH"
'prefix (list (string-append out
"/lib/python"
--
2.38.1
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Christopher Baines wrote on 23 Nov 2022 10:20
(name . Demis Balbach)(address . db@minikn.xyz)
874juqrpoo.fsf@cbaines.net
Demis Balbach <db@minikn.xyz> writes:

Toggle quote (18 lines)
> * gnu/packages/engineering.scm (cura): Make it work on wayland.
> ---
> gnu/packages/engineering.scm | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
> index 43e23e30a8..42537364e6 100644
> --- a/gnu/packages/engineering.scm
> +++ b/gnu/packages/engineering.scm
> @@ -3780,6 +3780,7 @@ (define-public cura
> (lambda* (#:key outputs #:allow-other-keys)
> (let ((out (assoc-ref outputs "out")))
> (wrap-program (string-append out "/bin/cura")
> + '("QT_QPA_PLATFORM" = ("xcb"))
> (list "GUIX_PYTHONPATH"
> 'prefix (list (string-append out
> "/lib/python"

Setting this environment variable here seems quite unusual. What's it
doing, and would anyone want to set a different value?

Thanks,

Chris
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Christopher Baines wrote on 23 Nov 2022 10:22
tag 59451 moreinfo
(address . control@debbugs.gnu.org)
87cz9euit8.fsf@cbaines.net
tags 59451 + moreinfo
quit
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Demis Balbach wrote on 28 Nov 2022 23:34
Re: [bug#59451] [PATCH] gnu: cura: Make it work on wayland.
(name . Christopher Baines)(address . mail@cbaines.net)
87fse23dyn.fsf@minikn.xyz
On 2022-11-23 09:20, Christopher Baines wrote:

Toggle quote (7 lines)
> Setting this environment variable here seems quite unusual. What's it
> doing, and would anyone want to set a different value?
>
> Thanks,
>
> Chris

Hello Chris,

unfortunately I can't help much with this. Cura is currently not running
under Wayland (XWayland). After doing a bit of research, I found
`QT_QPA_PLATFORM` to `xcb` was the suggested workaround until wayland is
officially supported.

My QT knowledge is very limited, but the QT_QPA_PLATFORM env var seems
to allow for defining platform-specific features for the application

Setting it to `xcb` enables the XCB plugin
default X11 plugin.

Setting the env var to `wayland` doesn't work unfortunately. As an
alternative, I could create a package derivation `cura-wayland` and only
apply the patch there? Would that be more suitable?

--
Best regards / Mit freundlichen Grüßen,
Demis Balbach
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Morgan Smith wrote on 4 Dec 2022 18:56
Re: bug#59451: [PATCH] gnu: cura: Make it work on wayland.
(name . Demis Balbach)(address . db@minikn.xyz)
DM5PR03MB3163F518F1F49817002DDD19C5199@DM5PR03MB3163.namprd03.prod.outlook.com
I'm not certain but this might be related to bug 57742. Basically cura
is a QT application that cannot access the qtwayland plugin. We could
add this plugin to the inputs or we could fix bug 57742 and have users
install it themselves. If I'm correct that is. I haven't tested this
theory
?
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