gnu: musescore: Update to 3.0.

* gnu/packages/music.scm (musescore): Update to 3.0.
[build-system]: Switch to CMake build system.
[arguments]: Apply build system change.
[native-inputs]: Remove unnecessary "cmake" input.

gnu/packages/music.scm

@@ -3610,7 +3610,7 @@ audio samples and various soft sythesizers.  It can receive input from a MIDI ke
 (define-public musescore
   (package
     (name "musescore")
-    (version "2.3.2")
+    (version "3.0")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -3619,7 +3619,7 @@ audio samples and various soft sythesizers.  It can receive input from a MIDI ke
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "0ncv0xfmq87plqa43cm0fpidlwzz1nq5s7h7139llrbc36yp3pr1"))
+                "0g8n8xpw5d6wh8bwbvy12sinl9i0ir009sr28i4izr28lr4x8v50"))
               (modules '((guix build utils)))
               (snippet
                ;; Un-bundle OpenSSL and remove unused libraries.
@@ -3634,27 +3634,21 @@ audio samples and various soft sythesizers.  It can receive input from a MIDI ke
                               "thirdparty/openssl"
                               "thirdparty/portmidi"))
                   #t))))
-    (build-system gnu-build-system)
+    (build-system cmake-build-system)
     (arguments
-     `(#:make-flags
-       `(,(string-append "PREFIX=" (assoc-ref %outputs "out"))
-         "USE_SYSTEM_FREETYPE=ON"
-         "DOWNLOAD_SOUNDFONT=OFF"
-         ;; The following is not supported since Qt 5.11.  May be removed in
-         ;; a future release.
-         "BUILD_WEBKIT=OFF")
-       ;; There are tests, but no simple target to run.  The command
-       ;; used to run them is:
+     `(#:configure-flags
+       `("-DUSE_SYSTEM_FREETYPE=ON"
+         "-DBUILD_WEBENGINE=OFF"
+         "-DDOWNLOAD_SOUNDFONT=OFF")
+       ;; There are tests, but no simple target to run.  The command used to
+       ;; run them is:
        ;;
        ;;   make debug && sudo make installdebug && cd \
        ;;   build.debug/mtest && make && ctest
        ;;
        ;; Basically, it requires to start a whole new build process.
        ;; So we simply skip them.
-       #:tests? #f
-       #:phases
-       (modify-phases %standard-phases
-         (delete 'configure))))
+       #:tests? #f))
     (inputs
      `(("alsa-lib" ,alsa-lib)
        ("freetype" ,freetype)
@@ -3673,8 +3667,7 @@ audio samples and various soft sythesizers.  It can receive input from a MIDI ke
        ("qtsvg" ,qtsvg)
        ("qtxmlpatterns" ,qtxmlpatterns)))
     (native-inputs
-     `(("cmake" ,cmake)
-       ("pkg-config" ,pkg-config)
+     `(("pkg-config" ,pkg-config)
        ("qttools" ,qttools)))
     (synopsis "Music composition and notation software")
     (description "MuseScore is a music score typesetter.  Its main purpose is