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bug#39102: [PATCH v2 2/2 staging] gnu: qtbase: Open links properly witho
bug#39102: [PATCH v2 2/2 staging] gnu: qtbase: Open links properly without xdg-utils in profile
Mon, 13 Jan 2020 22:43:01 +0100
Notmuch/0.29.3 (https://notmuchmail.org) Emacs/26.3 (x86_64-pc-linux-gnu)
Jakub Kądziołka <address@hidden> writes:
> * gnu/packages/qt.scm (qtbase)[inputs]: Add XDG-UTILS.
> [arguments](patch-xdg-open): New phase.
> On Sun, Jan 12, 2020 at 08:44:43PM +0100, Marius Bakke wrote:
>> Jakub Kądziołka <address@hidden> 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. :-)
> Yeah, for some reason I thought a patch like this might as well not
> leave any dead code behind.
>> With this patch, BROWSER and DEFAULT_BROWSER would no longer be
>> consulted, right?
> BROWSER is checked by xdg-open anyway. DEFAULT_BROWSER would indeed be
> no longer consulted.
>> Does checkExecutable work with absolute file names? I.e. could we get
>> away by simply patching "xdg-open" with its store file name?
> That's what I considered doing at first, but when I drilled a few
> methods into the code, I decided that it's very unlikely to work and I
> don't want to check it empirically due to the painfully long
>> Probably should change the default browsers while at it, though. :-)
> I don't think there's much point, as that code becomes dead when
> xdg-open is always found.
Right, thanks for clarifying.
>> 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?
> Perhaps applying the patch in a phase instead of (source _) would help?
>> In short, I'm looking for an easier way to achieve the same goal,
>> without the rather intrusive patch.
> See PATCHv2, which uses a much more minimal approach, but leaves some
> dead stuff that isn't likely to be optimized by the compiler. Caring
> about this might not be rational, now that I think about it...
Heh. Considering possible side effects is good, even if the effects are
not very worrying. :-)
> On Mon, Jan 13, 2020 at 09:53:12AM +0200, Efraim Flashner wrote:
> | 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.
> You seem to be misreading the code. If xdg-open is available, it is
> used, the browser list is only used when xdg-open isn't found.
> | I think our best bet would be to [...] change the list of *browsers to
> | ones we actually have in Guix.
> As mentioned above, the list would never be read, since xdg-open would
> always be found.
OK. The new patch is much less intimidating, I will apply it shortly.
(by the way, please attach full patches instead of plain diffs, so we
can 'git am' straight from our MUA instead of having to mangle it)
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