VTE 0.55.0

[brettg]

Hi all,

I am working on trying to package a newer version of the GNOME virtual 
terminal lib (VTE). I have mostly copied the previous version as a 
starting point. When I try to build it, it is throwing an error saying 
that I need to use a C++17 compliant standard in the compiler. Okay, no 
problem, so I try to pass a configuration flag to enable the g++17 std. 
However, when I do this it is accepting that as a valid configuration 
parameter, but the configuration is still saying that it is not C++17 
compliant.

I tried to see if Ricardo had something for this in his wip gnome 
branch, but it does not seem like he does. So here I am.

(define-public vte
  (package
    (name "vte")
    (version "0.55.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnome/sources/" name "/"
                                  (version-major+minor version) "/"
                                  name "-" version ".tar.xz"))
              (sha256
               (base32
                
"064hvyx7w8l2lnwca28n7bbrks2ivqgd7h82nrp3gpx54bdr1n3f"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("intltool" ,intltool)
       ("vala" ,vala)
       ("gobject-introspection" ,gobject-introspection)
       ("glib" ,glib "bin") ; for glib-genmarshal, etc.
       ("gperf" ,gperf)
       ("xmllint" ,libxml2)))
    (propagated-inputs
     `(("gtk+" ,gtk+)                             ;required by 
vte-2.91.pc
       ("gnutls" ,gnutls)                         ;ditto
       ("pcre2" ,pcre2)))                         ;ditto
    (arguments
     `(#:configure-flags '("CXXFLAGS=-std=c++17")))
    (home-page "https://www.gnome.org/";)
    (synopsis "Virtual Terminal Emulator")
    (description
     "VTE is a library (libvte) implementing a terminal emulator widget 
for
GTK+, and a minimal sample application (vte) using that.  Vte is mainly 
used in
gnome-terminal, but can also be used to embed a console/terminal in 
games,
editors, IDEs, etc.")
    (license license:lgpl2.1+)))

-------


checking whether g++ supports C++17 features by default... no
checking whether g++ supports C++17 features with -std=gnu++17... no
checking whether g++ supports C++17 features with -std=gnu++1z... no
checking whether g++ supports C++17 features with -std=c++17... no
checking whether g++ supports C++17 features with +std=c++17... no
checking whether g++ supports C++17 features with -h std=c++17... no
checking whether g++ supports C++17 features with -std=c++1z... no
checking whether g++ supports C++17 features with +std=c++1z... no
checking whether g++ supports C++17 features with -h std=c++1z... no
configure: error: *** A compiler with support for C++17 language 
features is required.


thanks for your help

Brett Gilio