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] > + ;; 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] -- Regards Hartmut Goebel | Hartmut Goebel | h.goebel@crazy-compilers.com | | www.crazy-compilers.com | compilers which you thought are impossible |