package/homebrew: use current master for the stable version.

2020.06 is just too old, and waiting for the time I make next release
just to stay "correct" is increasingly counterproductive.

package/homebrew/magnum-bindings.rb

@@ -1,9 +1,10 @@
 class MagnumBindings < Formula
   desc "`Bindings for the Magnum C++11/C++14 graphics engine"
   homepage "https://magnum.graphics"
-  url "https://github.com/mosra/magnum-bindings/archive/v2020.06.tar.gz"
+  # git describe origin/master, except the `v` prefix
-  # wget https://github.com/mosra/magnum-bindings/archive/v2020.06.tar.gz -O - | sha256sum
+  version "2020.06-421-g439945c"
-  sha256 "959c703e6409ba0c2cd6c0da3a2b6190f6fac837ff69f64cbdc372e11359e7d8"
+  # Clone instead of getting an archive to have tags for version.h generation
+  url "https://github.com/mosra/magnum-bindings.git", revision: "439945c"
   head "https://github.com/mosra/magnum-bindings.git"
 
   depends_on "cmake" => :build
@@ -12,35 +13,17 @@ class MagnumBindings < Formula
   depends_on "magnum"
   depends_on "pybind11" => :build
 
-  # Apply a patch to make 2020.06 working with latest pybind11, which changes
-  # py::module to py::module_
-  stable do
-    patch do
-      url "https://github.com/mosra/magnum-bindings/commit/57db13422fe36d1bcfc7bee9b138c79901062dae.diff?full_index=1"
-      sha256 "c13536e1bac8721f0c766768159e2b91babc4674fcbf46edfc0c43c72c77df3b"
-    end
-  end
-
   def install
-    # 2020.06 has the options unprefixed, current master has them prefixed.
-    # Options not present in 2020.06 are prefixed always.
-    option_prefix = build.head? ? 'MAGNUM_' : ''
-    # 2020.06 has CMake 3.5 as minimum required for backwards compatibility
-    # purposes, but it works with any newer. CMake 4.0 removed compatibility
-    # with it and suggests this as an override.
-    # TODO remove once a new release is finally made
-    extra_cmake_args = build.head? ? [] : ['-DCMAKE_POLICY_VERSION_MINIMUM=3.5']
-
     system "mkdir build"
     cd "build" do
       system "cmake",
-        *(std_cmake_args + extra_cmake_args),
+        *std_cmake_args,
         # Without this, ARM builds will try to look for dependencies in
         # /usr/local/lib and /usr/lib (which are the default locations) instead
         # of /opt/homebrew/lib which is dedicated for ARM binaries. Please
         # complain to Homebrew about this insane non-obvious filesystem layout.
         "-DCMAKE_INSTALL_NAME_DIR:STRING=#{lib}",
-        "-D#{option_prefix}WITH_PYTHON=ON",
+        "-DMAGNUM_WITH_PYTHON=ON",
         ".."
       system "cmake", "--build", "."
       system "cmake", "--build", ".", "--target", "install"