mpv: build with python3

srcpkgs/mpv/template

@@ -11,7 +11,7 @@ configure_args="--confdir=/etc/mpv --docdir=/usr/share/examples/mpv
  $(vopt_enable smb libsmbclient) $(vopt_enable sndio)
  $(vopt_enable vapoursynth) $(vopt_enable vdpau) $(vopt_enable wayland)
  $(vopt_enable x11) $(vopt_enable vulkan) $(vopt_enable vulkan shaderc)"
-hostmakedepends="pkg-config python-docutils perl $(vopt_if wayland wayland-devel)"
+hostmakedepends="pkg-config python3-docutils perl $(vopt_if wayland wayland-devel)"
 makedepends="MesaLib-devel ffmpeg-devel harfbuzz-devel lcms2-devel libXv-devel
  libass-devel libbluray-devel libcdio-paranoia-devel libdvdnav-devel
  libdvdnav-devel libguess-devel libuuid-devel libva-glx-devel rubberband-devel
@@ -45,7 +45,7 @@ if [ -z "$CROSS_BUILD" ]; then
 fi
 
 pre_configure() {
-	python2 bootstrap.py
+	python3 bootstrap.py
 }
 
 mpv-devel_package() {