gnu: cambalache: Update to 0.12.0.

* gnu/packages/gnome.scm (cambalache): Update to 0.12.0.
[arguments]<#:tests?>: Disable.
<#:phases>: Adjust ‘patch-build’ accordingly.  Add ‘fake-cc’.
[inputs]: Add gtksourceview-4 and python-pycairo.
Replace webkitgtk-with-libsoup2 with webkitgtk and webkitgtk-next.
[native-inputs]: Add weston.

gnu/packages/gnome.scm

@@ -3303,7 +3303,7 @@ compiles to GTKBuilder XML.")
 (define-public cambalache
   (package
     (name "cambalache")
-    (version "0.10.3")
+    (version "0.12.0")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -3311,7 +3311,7 @@ compiles to GTKBuilder XML.")
                     (commit version)))
               (file-name (git-file-name name version))
               (sha256
-               (base32 "1nq9bvly4dm1xnh90z3b4c5455qpdgm3jgz2155vg2ai23f22vsy"))))
+               (base32 "12dhc7mx04cpc9qwcvqiplphh3mar7wy6cbkv208j7pcg5fzkqh0"))))
     (build-system meson-build-system)
     (arguments
      (list
@@ -3321,6 +3321,7 @@ compiles to GTKBuilder XML.")
       #:modules '((guix build meson-build-system)
                   ((guix build python-build-system) #:prefix python:)
                   (guix build utils))
+      #:tests? #f                       ; XXX: tests spawn a socket...
       #:phases
       #~(modify-phases %standard-phases
           (add-after 'unpack 'patch-source
@@ -3331,8 +3332,16 @@ compiles to GTKBuilder XML.")
                                   inputs (string-append "bin/" cmd)))))))
           (add-after 'unpack 'patch-build
             (lambda _
+              (substitute* "meson.build"
+                (("find_program\\('gtk-update-icon-cache'.*\\)") "")
+                (("find_program\\('update-desktop-database'.*\\)") ""))
               (substitute* "postinstall.py"
+                (("gtk-update-icon-cache") "true")
                 (("update-desktop-database") "true"))))
+          (add-after 'unpack 'fake-cc
+            (lambda _
+              (substitute* "tools/cmb_init_dev.py"
+                (("\"cc") (string-append "\"" #$(cc-for-target))))))
           (add-after 'wrap 'python-wrap (assoc-ref python:%standard-phases 'wrap))
           (delete 'check)
           (add-after 'install 'add-install-to-pythonpath
@@ -3372,18 +3381,26 @@ compiles to GTKBuilder XML.")
            adwaita-icon-theme hicolor-icon-theme
            gsettings-desktop-schemas
            gtk
+           gtksourceview-4
            `(,gtk+ "bin")               ; broadwayd
            `(,gtk "bin")
            libadwaita
            libhandy
            (librsvg-for-system)
            python
+           python-pycairo
            python-pygobject
            python-lxml
-           webkitgtk-with-libsoup2))
-    (native-inputs (list `(,glib "bin") gobject-introspection
-                         gettext-minimal pkg-config
-                         python-pytest xorg-server-for-tests))
+           webkitgtk
+           webkitgtk-next))
+    (native-inputs
+     (list `(,glib "bin")
+           gobject-introspection
+           gettext-minimal
+           pkg-config
+           python-pytest
+           weston
+           xorg-server-for-tests))
     (home-page "https://gitlab.gnome.org/jpu/cambalache")
     (synopsis "Rapid application development tool")
     (description "Cambalache is a rapid application development (RAD) tool for