GNU bug report logs - #35866
[PATCH] gnu: Add qtwebengine.

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From: Hartmut Goebel <h.goebel <at> crazy-compilers.com>
To: Mike Rosset <mike.rosset <at> gmail.com>, 35866 <at> debbugs.gnu.org
Subject: [bug#35866] [PATCH] gnu: Add qtwebengine.
Date: Tue, 31 Dec 2019 14:10:08 +0100

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Hi,
in addtion to other remarks:

Am 18.12.19 um 21:45 schrieb Mike Rosset
> +       (uri
> +        (string-append "https://download.qt.io/official_releases/qt/"
> +                       (substring version 0 4)
> +                       "/" version "/submodules/"
> +                       (string-append name "-everywhere-src-" version)
> +                       ".tar.xz"))


Please use the same code and formatting as sued for qtsvg. This helps
keeping the code consistent.

> +        `(modify-phases ,phases
> +           (replace 'configure
> +             (lambda* (#:key inputs outputs #:allow-other-keys)
> +               ;; Avoids potential race conditions
I suggest to put this into *two* new phases: `patch-source` (or so)
containing the substitute stuff, and `setup-configure` for setting the
environment variables.


> +               (substitute* "src/core/web_engine_library_info.cpp"
> +                 (("QLibraryInfo::location\\(QLibraryInfo::TranslationsPath\\)")
> +                  (format #f "QLatin1String(\"~a\")" (string-append (assoc-ref outputs "out") "/share/qt5/translations")))
> +                 (("QLibraryInfo::location\\(QLibraryInfo::DataPath\\)")
> +                  (format #f "QLatin1String(\"~a\")" (string-append (assoc-ref outputs "out") "/share/qt5"))))

I suggest *not* using `format`, as we rarely use it in substitutes and
you are using `string-append` anyway. I also suggest to define a
variable `out` to be used here (same for `nss`, `udev` below) to avoid
having `assic-ref` here, see [0] as an example. Then `format` might even
be beneficial:

+                  (format #f
"QLatin1String(\"~a/share/qt5/translations\")" out)

+                  (string-append "QLatin1String(\"" out
"/share/qt5/translations\")")


[0]
<https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/qt.scm#n605>

> +               ;; Valid QT_BUILD_PARTS variables are:
> +               ;; libs tools tests examples demos docs translations
> +               (invoke "qmake" "QT_BUILD_PARTS = libs tools" "--"
> +                       "--webengine-printing-and-pdf=no"
> +                       "--webengine-ffmpeg=system"
> +                       "--webengine-icu=system"
> +                       "--webengine-pepper-plugins=no")))))

Would setting `#:configure-flags` with "-DBUILD_TESTS=off" (see e.g.
[1]) work, too, instead of passing "QT_BUILD_PARTS"?


[1]
<https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/qt.scm#n2119>


-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel <at> crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |

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