GNU bug report logs - #39102
[PATCH 1/2] gnu: xdg-utils: Don't use propagated inputs.

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From: Efraim Flashner <efraim <at> flashner.co.il>
To: Marius Bakke <mbakke <at> fastmail.com>
Cc: Jakub Kądziołka <kuba <at> kadziolka.net>, 39102 <at> debbugs.gnu.org
Subject: [bug#39102] [PATCH 2/2 staging] gnu: qtbase: Open links properly without xdg-utils in profile
Date: Mon, 13 Jan 2020 09:53:12 +0200

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On Sun, Jan 12, 2020 at 08:44:43PM +0100, Marius Bakke wrote:
> Jakub Kądziołka <kuba <at> kadziolka.net> writes:
> 
> > * gnu/packages/patches/qtbase-use-xdg-open-in-store.patch: New file.
> > * gnu/packages/qt.scm (qtbase)[source][patches]: Apply the patch.
> >   [inputs]: Add a dependency on xdg-utils to get its store path.
> >   [arguments]: Add a new phase to patch the path into the source code.
> 
> This patch does a lot.  :-)
> 
> With this patch, BROWSER and DEFAULT_BROWSER would no longer be
> consulted, right?
> 
> Does checkExecutable work with absolute file names?  I.e. could we get
> away by simply patching "xdg-open" with its store file name?  Probably
> should change the default browsers while at it, though.  :-)
> 
> Wrt the easy substitution, I think we should try and avoid introducing
> changes to source code that depend on magic from #:phases.  That way
> people will still be (mostly) able to build Qt manually using the Guix
> source.  In this case, maybe defaulting to just "xdg-open" is enough?
> 
> In short, I'm looking for an easier way to achieve the same goal,
> without the rather intrusive patch.
> 
> Copying Efraim as our resident Qt expert.

I disagree about being a qt expert, I just like fixing packages :)

Looking at the patch, I'm not in love with how there's a default list of
browsers to look for. Looking at the code, it seems that if there's
xdg-open available then open browser from the pre-defined list.

What is the code around m_documentLauncher? Does that really need to be
removed?

I think our best bet would be to substitute xdg-open with the actual
xdg-open binary around line 130 and to change the list of *browsers[] to
ones we actually have in Guix. If we switched the list to {"icecat",
"next", "chromium", "netsurf"} and made the substitution on xdg-open
we'd be in a much better place than we are now.

As it currently stands I know I don't have BROWSER or DEFAULT_BROWSER
defined and we don't have any Debian-like package named
'default-browser' or similar that we could throw in.


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