Add latest version of meson (#10104)

var/spack/repos/builtin/packages/meson/package.py

@@ -12,13 +12,15 @@ class Meson(PythonPackage):
        extremely fast, and as user friendly as possible."""
 
     homepage = "http://mesonbuild.com/"
-    url      = "https://github.com/mesonbuild/meson/archive/0.42.0.tar.gz"
+    url      = "https://github.com/mesonbuild/meson/archive/0.49.0.tar.gz"
 
+    version('0.49.0', sha256='11bc959e7173e714e4a4e85dd2bd9d0149b0a51c8ba82d5f44cc63735f603c74')
     version('0.42.0', '9e26bf154ca439b78b1b9366c8a89437')
     version('0.41.2', 'aa9c69ced965e47f5c75a9257ee91ce3')
     version('0.41.1', 'c6d285b35cfd7acc8517124d417efbdc')
 
     variant('ninjabuild', default=True)
 
-    depends_on('python@3:',        type=('build', 'run'))
+    depends_on('python@3:', type=('build', 'run'))
+    depends_on('py-setuptools', type='build')
     depends_on('ninja', when='+ninjabuild', type=('build', 'run'))