diff --git a/Formula/freecad@1.0.0_py312_qt6.rb b/Formula/freecad@1.0.0_py312_qt6.rb
new file mode 100644
index 0000000..8c0951c
--- /dev/null
+++ b/Formula/freecad@1.0.0_py312_qt6.rb
@@ -0,0 +1,419 @@
+class FreecadAT100Py312Qt6 < Formula
+  desc "Parametric 3D modeler"
+  homepage "https://www.freecadweb.org"
+  license "GPL-2.0-only"
+
+  # NOTE: ipatch, ie. local patch `url "file:///#{HOMEBREW_PREFIX}/Library/Taps/freecad/homebrew-freecad/patches/`
+  # run `brew cleanup` when editing local patch files on each subsequent `brew install`
+  #---
+  stable do
+    url "https://github.com/FreeCAD/FreeCAD/archive/refs/tags/1.0.0.tar.gz"
+    sha256 "51115afd8e3b89f4bac343b986b0800d8e1c68fc1e322c3cd179cfe1033ef937"
+
+    # NOTE: ipatch, vtk >= 9.4 will break build of 1.0
+    patch do
+      url "https://github.com/wwmayer/FreeCAD/commit/8934af10128f0bd2d0ffada946d1c93bc5d8869f.patch?full_index=1"
+      sha256 "1c4f0d32f0726a94ac607a44e1efbdc42a32f8fbd97a9ccd20151defda368f76"
+    end
+
+    patch do
+      url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/e78eeda91a16658ce4954114b5fdb85b7e72e774/patches/freecad%400.21.2_py310-hdf5-fix-cmake-reruns.patch"
+      sha256 "b1becbdc867e96aa1bfe8d8fd1c1b01053b2ce5d1d9483cd0ed19b2d2c6f387f"
+    end
+
+    patch do
+      url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/1fde4f693950d77e8617c08921d50c1aba3f0a56/patches/freecad-0.20.2-cmake-find-xercesc.patch"
+      sha256 "adb30f5d723672d1d54db4a236bce8a85e9bc9d0667ef88a7360e4cae1bb27c9"
+    end
+
+    patch do
+      on_linux do
+        url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/0e3bdef3b239a1f81e07bf774ae799819f3cea90/patches/freecad%401.0.0_py312-linuxbrew-fix-missing-headers.patch"
+        sha256 "7c7e0376e676096d32bbf05e23ab10556e50ef54effff7777d325bda490dde11"
+      end
+    end
+
+    # NOTE: ipatch, building rc2 >= tags of freecad require resource blocks due to the use of git submodules
+    resource "ondselsolver" do
+      url "https://github.com/Ondsel-Development/OndselSolver/archive/889196e3267597127b5889572b0c86f9316e16f0.tar.gz"
+      sha256 "83124c67971e7322b553599cf5883bb28cceffe0efde7e8524c090adc3d94b6e"
+    end
+
+    resource "googletest" do
+      url "https://github.com/google/googletest/releases/download/v1.15.2/googletest-1.15.2.tar.gz"
+      sha256 "7b42b4d6ed48810c5362c265a17faebe90dc2373c885e5216439d37927f02926"
+    end
+
+    resource "msgsl" do
+      url "https://github.com/microsoft/GSL/archive/refs/tags/v4.1.0.tar.gz"
+      sha256 "0a227fc9c8e0bf25115f401b9a46c2a68cd28f299d24ab195284eb3f1d7794bd"
+    end
+  end
+
+  head do
+    url "https://github.com/freecad/FreeCAD.git", branch: "main", shallow: false
+
+    patch do
+      url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/e78eeda91a16658ce4954114b5fdb85b7e72e774/patches/freecad%400.21.2_py310-hdf5-fix-cmake-reruns.patch"
+      sha256 "b1becbdc867e96aa1bfe8d8fd1c1b01053b2ce5d1d9483cd0ed19b2d2c6f387f"
+    end
+
+    patch do
+      url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/1fde4f693950d77e8617c08921d50c1aba3f0a56/patches/freecad-0.20.2-cmake-find-xercesc.patch"
+      sha256 "adb30f5d723672d1d54db4a236bce8a85e9bc9d0667ef88a7360e4cae1bb27c9"
+    end
+
+    patch do
+      on_linux do
+        url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/0e3bdef3b239a1f81e07bf774ae799819f3cea90/patches/freecad%401.0.0_py312-linuxbrew-fix-missing-headers.patch"
+        sha256 "7c7e0376e676096d32bbf05e23ab10556e50ef54effff7777d325bda490dde11"
+      end
+    end
+  end
+
+  keg_only :versioned_formula
+
+  depends_on "cmake" => :build
+  depends_on "freecad/freecad/swig@4.2.1" => :build
+  depends_on "gcc" => :build # gfortran req for FEM WB
+  depends_on "lld" => :build if OS.linux?
+  depends_on "ninja" => :build if OS.linux?
+  depends_on "pkg-config" => :build
+  depends_on "boost"
+  depends_on "cups" # qt6
+  depends_on "cython"
+  depends_on "doxygen"
+  depends_on "expat"
+  depends_on "fmt"
+  depends_on "fontconfig" if OS.linux?
+  depends_on "freecad/freecad/coin3d@4.0.3_py312"
+  # epends_on "freecad/freecad/fc_bundle_py312"
+  depends_on "freecad/freecad/med-file@4.1.1_py312"
+  depends_on "freecad/freecad/numpy@2.1.1_py312"
+  depends_on "freecad/freecad/pybind11_py312"
+  depends_on "freecad/freecad/pyside6_py312"
+  depends_on "freeimage"
+  depends_on "freetype"
+  depends_on "glew"
+  depends_on "hdf5"
+  depends_on "icu4c"
+  depends_on "libomp" if OS.linux?
+  depends_on "libx11" if OS.linux?
+  depends_on "llvm" if OS.linux?
+  depends_on macos: :high_sierra
+  depends_on "mesa" if OS.linux?
+  depends_on "mesa-glu" if OS.linux?
+  depends_on "nlohmann-json"
+  depends_on "openblas" if OS.linux?
+  depends_on "opencascade"
+  depends_on "openmpi" if OS.linux?
+  depends_on "orocos-kdl"
+  depends_on "python@3.12"
+  depends_on "qt"
+  depends_on "tbb"
+  depends_on "vtk"
+  depends_on "vulkan-headers"
+  depends_on "webp"
+  depends_on "xerces-c"
+  depends_on "yaml-cpp"
+  depends_on "zlib"
+
+  # TODO: attempt to install without patch
+  patch do
+    url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/a979a1011bb1d911c2c26db9b663b04862b8b950/patches/freecad%401.0.0_rc2_py312-fix-pyside-path-issue.patch"
+    sha256 "c312676f490a9850691cc47ced760849bd440d20f0fdbefcac42b613f5873a2f"
+  end
+
+  # NOTE: https://docs.brew.sh/Formula-Cookbook#handling-different-system-configurations
+  # patch for mojave with 10.15 SDK
+  # patch :p1 do
+  #   url "https://raw.githubusercontent.com/FreeCAD/homebrew-freecad/a4b71def99b5fe907550729038752aaf6fa1b9bf/patches/freecad-0.20.1-macos-10.15-sdk.patch"
+  #   sha256 "ce9f4b2afb2c621274e74208a563616eeeee54369f295b6c5f6f4f3112923135"
+  # end
+
+  def install
+    hbp = HOMEBREW_PREFIX
+
+    # NOTE: `which` cmd is not installed by default on every OS
+    # ENV["PYTHON"] = which("python3.10")
+    #------------
+    ENV["PYTHON"] = Formula["python@3.12"].opt_bin/"python3.12"
+
+    # Get the Python includes directory without duplicates
+    py_inc_output = `python3.12-config --includes`
+    py_inc_dirs = py_inc_output.scan(/-I([^\s]+)/).flatten.uniq
+    py_inc_dir = py_inc_dirs.join(" ")
+
+    py_lib_path = if OS.mac?
+      `python3.12-config --configdir`.strip + "/libpython3.12.dylib"
+    else
+      `python3.12-config --configdir`.strip + "/libpython3.12.a"
+    end
+
+    puts "----------------------------------------------------"
+    puts "PYTHON=#{ENV["PYTHON"]}"
+    puts "PYTHON_INCLUDE_DIR=#{py_inc_dir}"
+    puts "PYTHON_LIBRARY=#{py_lib_path}"
+
+    # NOTE: apple's clang & clang++ don not provide batteries for open-mpi
+    # NOTE: when setting the compilers to brews' llvm, set the cmake_ar linker as well
+    # ENV["CC"] = Formula["llvm"].opt_bin/"clang"
+    # ENV["CXX"] = Formula["llvm"].opt_bin/"clang++"
+
+    ENV.delete("CMAKE_PREFIX_PATH") # Clear existing paths
+    puts "----------------------------------------------------"
+    puts "CMAKE_PREFIX_PATH=#{ENV["CMAKE_PREFIX_PATH"]}"
+    puts "CMAKE_PREFIX_PATH Datatype: #{ENV["CMAKE_PREFIX_PATH"].class}"
+    puts "----------------------------------------------------"
+    puts "homebrew prefix: #{hbp}"
+    puts "prefix: #{prefix}"
+    puts "rpath: #{rpath}"
+
+    ENV.remove "PATH", Formula["qt@5"].opt_prefix/"bin"
+    # ENV.remove "PATH", Formula["pyqt"].opt_prefix/"bin"
+    puts "PATH=#{ENV["PATH"]}"
+
+    cmake_prefix_paths = []
+    # cmake_prefix_paths << Formula["llvm"].prefix
+    # cmake_prefix_paths << Formula["open-mpi"].prefix
+    cmake_prefix_paths << Formula["boost"].prefix
+    cmake_prefix_paths << Formula["coin3d@4.0.3_py312"].prefix
+    cmake_prefix_paths << Formula["cups"].prefix
+    cmake_prefix_paths << Formula["double-conversion"].prefix
+    cmake_prefix_paths << Formula["doxygen"].prefix
+    cmake_prefix_paths << Formula["eigen"].prefix
+    cmake_prefix_paths << Formula["expat"].prefix
+    cmake_prefix_paths << Formula["fmt"].prefix
+    cmake_prefix_paths << Formula["freeimage"].prefix
+    cmake_prefix_paths << Formula["freetype"].prefix
+    cmake_prefix_paths << Formula["glew"].prefix
+    cmake_prefix_paths << Formula["hdf5"].prefix
+    cmake_prefix_paths << Formula["icu4c"].prefix
+    cmake_prefix_paths << Formula["libjpeg-turbo"].prefix
+    cmake_prefix_paths << Formula["libomp"].prefix
+    cmake_prefix_paths << Formula["libpng"].prefix
+    cmake_prefix_paths << Formula["libtiff"].prefix
+    cmake_prefix_paths << Formula["lz4"].prefix
+    cmake_prefix_paths << Formula["med-file@4.1.1_py312"].prefix
+    cmake_prefix_paths << Formula["nlohmann-json"].prefix
+    cmake_prefix_paths << Formula["opencascade"].prefix
+    cmake_prefix_paths << Formula["orocos-kdl"].prefix
+    cmake_prefix_paths << Formula["pkg-config"].prefix
+    cmake_prefix_paths << Formula["pugixml"].prefix
+    cmake_prefix_paths << Formula["pybind11_py312"].prefix
+    cmake_prefix_paths << Formula["pyside6_py312"].prefix
+    cmake_prefix_paths << Formula["qt"].prefix
+    cmake_prefix_paths << Formula["swig@4.2.1"].prefix
+    cmake_prefix_paths << Formula["tbb"].prefix
+    cmake_prefix_paths << Formula["utf8cpp"].prefix
+    cmake_prefix_paths << Formula["vulkan-headers"].prefix
+    cmake_prefix_paths << Formula["vtk"].prefix
+    cmake_prefix_paths << Formula["xerces-c"].prefix
+    cmake_prefix_paths << Formula["xz"].prefix
+    cmake_prefix_paths << Formula["yaml-cpp"].prefix
+    cmake_prefix_paths << Formula["zlib"].prefix
+
+    if OS.linux?
+      cmake_prefix_paths << Formula["fontconfig"].prefix
+      cmake_prefix_paths << Formula["libx11"].prefix
+      cmake_prefix_paths << Formula["libxcb"].prefix
+      cmake_prefix_paths << Formula["llvm"].prefix
+      cmake_prefix_paths << Formula["mesa"].prefix
+      cmake_prefix_paths << Formula["mesa-glu"].prefix
+      cmake_prefix_paths << Formula["openblas"].prefix
+      cmake_prefix_paths << Formula["openmpi"].prefix
+    end
+
+    cmake_prefix_path_string = cmake_prefix_paths.join(";")
+
+    # Check if Xcode.app exists
+    if File.directory?("/Applications/Xcode.app")
+      apl_sdk = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
+      apl_frmwks ="#{apl_sdk}/System/Library/Frameworks"
+      cmake_ar = "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar"
+      cmake_ld = "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld"
+
+    else
+      apl_sdk = "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
+      apl_frmwks = "#{apl_sdk}/System/Library/Frameworks"
+      cmake_ar = "/Library/Developer/CommandLineTools/usr/bin/ar"
+      cmake_ld = "/Library/Developer/CommandLineTools/usr/bin/ld"
+    end
+
+    # TODO: stub out the below cmake vars
+    # -DCMAKE_OSX_SYSROOT=#{cmake_osx_sysroot}
+    # -DCMAKE_CXX_FLAGS="-fuse-ld=lld"
+    # -DBUILD_ENABLE_CXX_STD=C++17
+    # -DCMAKE_INSTALL_RPATH=#{prefix}/lib
+    # -DCMAKE_INSTALL_RPATH=#{rpath}
+    # -DBUILD_DRAWING=1
+    # -DBUILD_SMESH=1
+    # -DFREECAD_USE_EXTERNAL_KDL=1
+    # -DBUILD_FEM_NETGEN=0
+    # -DFREECAD_USE_QTWEBMODULE=#{qtwebmodule}
+    # -DCMAKE_EXE_LINKER_FLAGS="-v"
+
+    if OS.mac?
+      arch = Hardware::CPU.arch.to_s
+      fver = OS::Mac.full_version.to_s
+
+      args_macos_only = %W[
+        -DCMAKE_OSX_ARCHITECTURES=#{arch}
+        -DCMAKE_OSX_DEPLOYMENT_TARGET=#{fver}
+        -DCMAKE_AR=#{cmake_ar}
+        -DCMAKE_LINKER=#{cmake_ld}
+        -DCMAKE_INSTALL_NAME_TOOL:FILEPATH=/usr/bin/install_name_tool
+        -DOPENGL_INCLUDE_DIR=#{apl_frmwks}/OpenGL.framework
+        -DOPENGL_gl_LIBRARY=#{apl_frmwks}/OpenGL.framework
+        -DOPENGL_GLU_INCLUDE_DIR=#{apl_frmwks}/OpenGL.framework
+        -DOPENGL_glu_LIBRARY=#{apl_frmwks}/OpenGL.framework
+        -DCOREFOUNDATION_LIBRARY=#{apl_frmwks}/CoreFoundation.framework
+        -DCMAKE_IGNORE_PATH=#{hbp}/Cellar/qt@5;#{hbp}/opt/qt@5;
+      ]
+    end
+    # -DCMAKE_IGNORE_PATH=#{hbp}/lib;#{hbp}/include/QtCore;#{hbp}/Cellar/qt;
+    # -D_Qt5UiTools_RELEASE_AppKit_PATH=#{apl_frmwks}/AppKit.framework
+    # -D_Qt5UiTools_RELEASE_Metal_PATH=#{apl_frmwks}/Metal.framework
+    # -D_Qt5UiTools_RELEASE_DiskArbitration_PATH=#{apl_frmwks}/DiskArbitration.framework
+    # -D_Qt5UiTools_RELEASE_IOKit_PATH=#{apl_frmwks}/IOKit.framework
+    # -D_Qt5UiTools_RELEASE_OpenGL_PATH=#{apl_frmwks}/OpenGL.framework
+    # -D_Qt5UiTools_RELEASE_AGL_PATH=#{apl_frmwks}/AGL.framework
+
+    if OS.linux?
+      ninja_bin = Formula["ninja"].opt_bin/"ninja"
+      clang_cc = Formula["llvm"].opt_bin/"clang"
+      clang_cxx = Formula["llvm"].opt_bin/"clang++"
+      clang_ld = Formula["lld"].opt_bin/"lld"
+      clang_ar = Formula["llvm"].opt_bin/"llvm-ar"
+
+      openglu_inc_dir = Formula["mesa-glu"].opt_include
+
+      puts "----------------------------------------------------"
+      puts openglu_inc_dir
+      puts "----------------------------------------------------"
+
+      # NOTE: ipatch, linker req because, https://github.com/FreeCAD/homebrew-freecad/issues/546
+      linux_linker_flags = "-L#{HOMEBREW_PREFIX}/opt/gcc/lib/gcc/current " \
+                           "-Wl,-rpath,#{HOMEBREW_PREFIX}/opt/gcc/lib/gcc/current"
+
+      args_linux_only = %W[
+        -GNinja
+        -DCMAKE_MAKE_PROGRAM=#{ninja_bin}
+        -DX11_X11_INCLUDE_PATH=#{hbp}/opt/libx11/include/X11
+        -DFREECAD_USE_EXTERNAL_KDL=1
+        -DCMAKE_C_COMPILER=#{clang_cc}
+        -DCMAKE_CXX_COMPILER=#{clang_cxx}
+        -DCMAKE_LINKER=#{clang_ld}
+        -DCMAKE_AR=#{clang_ar}
+        -DOPENGL_GLU_INCLUDE_DIR=#{openglu_inc_dir}
+        -DCMAKE_EXE_LINKER_FLAGS=#{linux_linker_flags}
+      ]
+    end
+
+    args = %W[
+      -DHOMEBREW_PREFIX=#{hbp}
+      -DCMAKE_PREFIX_PATH=#{cmake_prefix_path_string}
+      -DCMAKE_INSTALL_PREFIX=#{prefix}
+      -DCMAKE_VERBOSE_MAKEFILE=1
+
+      -DPython_EXECUTABLE=#{ENV["PYTHON"]}
+      -DPython_INCLUDE_DIRS=#{py_inc_dir}
+      -DPython_LIBRARIES=#{py_lib_path}
+
+      -DPython3_EXECUTABLE=#{ENV["PYTHON"]}
+      -DPython3_INCLUDE_DIRS=#{py_inc_dir}
+      -DPython3_LIBRARIES=#{py_lib_path}
+
+      -DFREECAD_USE_PYBIND11=1
+      -DCMAKE_BUILD_TYPE=RelWithDebInfo
+
+      -DFREECAD_QT_VERSION=6
+
+      -DCMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH=FALSE
+      -DCMAKE_FIND_USE_CMAKE_SYSTEM_PATH=FALSE
+
+      -L
+    ]
+
+    # TODO: probably require a seperate formula to post_install the freecad py module
+    args << "-DINSTALL_TO_SITEPACKAGES=OFF"
+
+    # NOTE: useful cmake debugging args
+    # --trace
+    # -L
+
+    ENV.remove "PATH", Formula["pyside@2"].opt_prefix/"bin"
+    # ENV.remove "PATH", Formula["pyqt"].opt_prefix/"bin"
+
+    ENV.remove "PKG_CONFIG_PATH", Formula["pyside@2"].opt_prefix/"lib/pkgconfig"
+    ENV.remove "PKG_CONFIG_PATH", Formula["qt@5"].opt_prefix/"lib/pkgconfig"
+    # ENV.remove "PKG_CONFIG_PATH", Formula["qt"].opt_prefix/"lib/pkgconfig"
+
+    ENV.remove "CMAKE_FRAMEWORK_PATH", Formula["qt@5"].opt_prefix/"Frameworks"
+
+    ENV.remove "HOMEBREW_INCLUDE_PATHS", Formula["qt@5"].opt_prefix/"include"
+    ENV.remove "HOMEBREW_LIBRARY_PATHS", Formula["qt@5"].opt_prefix/"lib"
+
+    # NOTE: ipatch, do not make build dir a sub dir of the src dir
+    puts "current working directory: #{Dir.pwd}"
+    src_dir = Dir.pwd.to_s
+    parent_dir = File.expand_path("..", src_dir)
+    # make the build dir a peer of the src dir
+    build_dir = "#{parent_dir}/build"
+    # Create the build directory if it doesn't exist
+    mkdir_p(build_dir)
+    # Change the working directory to the build directory
+    # false positive: `warning: conflicting chdir during another chdir block`
+    Dir.chdir(build_dir)
+    puts "----------------------------------------------------"
+    puts Dir.pwd
+    puts "Buildpath is: #{buildpath}"
+    puts "----------------------------------------------------"
+
+    # NOTE: resources have to be in the correct buildpath
+    resource("googletest").stage(buildpath/"tests/lib")
+    resource("msgsl").stage(buildpath/"src/3rdParty/GSL")
+    resource("ondselsolver").stage(buildpath/"src/3rdParty/OndselSolver")
+
+    args.concat(args_macos_only) if OS.mac?
+    args.concat(args_linux_only) if OS.linux?
+
+    system "cmake", *args, src_dir.to_s
+    system "cmake", "--build", build_dir.to_s
+    system "cmake", "--install", build_dir.to_s
+  end
+
+  def post_install
+    ohai "the value of prefix = #{prefix}"
+    if OS.mac?
+      ln_s "#{prefix}/MacOS/FreeCAD", "#{HOMEBREW_PREFIX}/bin/freecad", force: true
+      ln_s "#{prefix}/MacOS/FreeCADCmd", "#{HOMEBREW_PREFIX}/bin/freecadcmd", force: true
+    elsif OS.linux?
+      ln_s "#{bin}/FreeCAD", "#{HOMEBREW_PREFIX}/bin/freecad", force: true
+      ln_s "#{bin}/FreeCADCmd", "#{HOMEBREW_PREFIX}/bin/freecadcmd", force: true
+    end
+  end
+
+  def caveats
+    <<-EOS
+    After installing FreeCAD you may want to do the following:
+
+    1. Due to recent code signing updates with Catalina and newer
+       building a FreeCAD.app bundle using the existing python
+       script no longer works due to updating the rpaths of the
+       copied executables and libraries into a FreeCAD.app
+       bundle, unless performing a work around described in the
+       below github issue comment,
+       https://github.com/FreeCAD/homebrew-freecad/issues/348#issuecomment-1248927545
+
+    2. presently the freecad py module is NOT globally accessible, ie.
+       one cannot directly run `import freecad` from a python v3.12
+       repl
+    EOS
+  end
+
+  test do
+    # NOTE: make test more robust and accurate
+    system "true"
+  end
+end