[bug#38440] [PATCH 0/5] Add the `qt` build-system.

[Hartmut Goebel <h.goebel@crazy-compilers.com>]

Works and is a good substitude for `wrap-program` from `qt-utils`. This
`wrap-program` is still kept, since some packagins not using the
cmake-build-syttem use it.

Like `wrap-program`, this implementation has one deficit: The
wrapper collects paths from *all* inputs, thus e.g. cmake will become a
dependency of *every* binary packages using qt-build-system.

But contraty to `wrap-program` this implementation does not use env-vars to
build the paths, but inputs. Thus it will be easier to solve the issue by
filtering inputs.

Comments on the code are heardy welcome.

Also see
<https://lists.gnu.org/archive/html/guix-devel/2019-11/msg00386.html>
<https://lists.gnu.org/archive/html/guix-devel/2019-11/msg00391.html>

Hartmut Goebel (5):
  guix: Add the 'qt' build system.
  gnu: sddm: Use qt-build-system.
  gnu: ktouch: Use qt-build-system.
  gnu: kdeconnect: Use qt-build-system.
  gnu: quaternion: Use qt-build-system.

 Makefile.am                       |   2 +
 doc/guix.texi                     |  21 ++-
 gnu/packages/display-managers.scm |  18 +-
 gnu/packages/education.scm        |  17 +-
 gnu/packages/kde.scm              |  18 +-
 gnu/packages/messaging.scm        |  17 +-
 guix/build-system/qt.scm          | 295 ++++++++++++++++++++++++++++++
 guix/build/qt-build-system.scm    | 109 +++++++++++
 8 files changed, 440 insertions(+), 57 deletions(-)
 create mode 100644 guix/build-system/qt.scm
 create mode 100644 guix/build/qt-build-system.scm

-- 
2.21.0