diff --git a/.appveyor.yml b/.appveyor.yml
new file mode 100644
index 0000000..2673951
--- /dev/null
+++ b/.appveyor.yml
@@ -0,0 +1,64 @@
+image: Visual Studio 2017
+
+clone_folder: c:\projects\USDPackaging
+
+branches:
+    only:
+        - gbk
+
+platform:
+    - x64
+
+install:
+    - ps: $env:USD_YY_VERSION = (Get-Content c:\projects\USD\cmake\defaults\Version.cmake | Where-Object {$_ -match 'PXR_MINOR_VERSION'}).Split("( )")[2].Trim('"').PadLeft(2, "0")
+    - ps: $env:USD_MM_VERSION = (Get-Content c:\projects\USD\cmake\defaults\Version.cmake | Where-Object {$_ -match 'PXR_PATCH_VERSION'}).Split("( )")[2].Trim('"').PadLeft(2, "0")
+    - ps: Update-AppveyorBuild -Version "$env:USD_YY_VERSION.$env:USD_MM_VERSION-$env:APPVEYOR_REPO_BRANCH-build$env:APPVEYOR_BUILD_NUMBER"
+    - ps: Invoke-WebRequest https://autodesk-adn-transfer.s3-us-west-2.amazonaws.com/ADN+Extranet/M%26E/Maya/devkit+2019/Autodesk_Maya_2019_2_Update_DEVKIT_Windows.zip -OutFile devkit_maya2019.zip
+    - echo "extracting maya devkit 2019 archive..."
+    - ps: Expand-Archive -Path devkit_maya2019.zip -DestinationPath c:/USDgen/src/devkit_maya2019 -Force
+    - ps: Invoke-WebRequest https://s3-us-west-2.amazonaws.com/autodesk-adn-transfer/ADN+Extranet/M%26E/Maya/devkit+2018/Autodesk_Maya_2018_6_Update_DEVKIT_Windows.zip -OutFile devkit_maya2018.zip
+    - echo "extracting maya devkit 2018 archive..."
+    - ps: Expand-Archive -Path devkit_maya2018.zip -DestinationPath C:/USDgen/src/devkit_maya2018 -Force
+
+cache:
+    - C:\USDgen\build\boost -> build_scripts/build_usd.py
+    - C:\USDgen\build\IlmBase -> build_scripts/build_usd.py
+    - C:\USDgen\build\OpenEXR -> build_scripts/build_usd.py
+    - C:\USDgen\build\OpenSubdiv-3_1_1 -> build_scripts/build_usd.py
+    - C:\USDgen\build\zlib-1.2.11 -> build_scripts/build_usd.py
+    - C:\USDgen\src -> build_scripts/build_usd.py
+
+init:
+    - set PATH=c:/Python27-x64;c:/Python27-x64/Scripts;%PATH%
+    - C:\"Program Files (x86)"\"Microsoft Visual Studio"\2017\Community\VC\Auxiliary\Build\vcvarsall.bat amd64
+    - git clone --single-branch --branch gbk  https://github.com/goodbyekansas/USD c:/projects/USD
+    - git clone --single-branch --branch gbk-master https://github.com/goodbyekansas/maya-usd c:/projects/maya-usd
+    - git clone https://github.com/goodbyekansas/usd-qt.git c:/projects/usd-qt
+    
+before_build:
+    - python -m pip install --upgrade pip
+    - pip install pyside
+    - pip install PyOpenGL
+
+build_script:
+    - cd c:/projects/USD
+    - python build_scripts/build_usd.py -vvv --build c:/USDgen/build --src c:/USDgen/src %APPVEYOR_BUILD_FOLDER%/USDinst/USD-core
+    - cd c:/USDgen/build
+    - dir
+    - cd c:/projects/maya-usd
+    - python build.py -v 3 --pxrusd-location %APPVEYOR_BUILD_FOLDER%/USDinst/USD-core --build-args="-DSKIP_USDMAYA_TESTS=ON,-DUFE_INCLUDE_DIR=c:/USDgen/src/devkit_maya2019/devkitBase/devkit/ufe/include,-DUFE_LIBRARY=c:/USDgen/src/devkit_maya2019/devkitBase/devkit/ufe/lib,-DMAYA_INCLUDE_DIRS=c:/USDgen/src/devkit_maya2019/devkitBase/include"  --install-location c:/Usdinst/maya-usd-2019 /tmp/workspace_maya2019 --devkit-location=c:/USDgen/src/devkit_maya2019/devkitBase/devkit
+    - python build.py -v 3 --pxrusd-location %APPVEYOR_BUILD_FOLDER%/USDinst/USD-core --build-args="-DSKIP_USDMAYA_TESTS=ON,-DUFE_INCLUDE_DIR=c:/USDgen/src/devkit_maya2018/devkitBase/devkit/ufe/include,-DUFE_LIBRARY=c:/USDgen/src/devkit_maya2018/devkitBase/devkit/ufe/lib,-DMAYA_INCLUDE_DIRS=c:/USDgen/src/devkit_maya2018/devkitBase/include"  --install-location c:/Usdinst/maya-usd-2018 /tmp/workspace_maya2018 --devkit-location=c:/USDgen/src/devkit_maya2018/devkitBase/devkit
+
+artifacts:
+  - path: USDInst
+    name: USD.19
+    type: zip
+
+deploy:
+  - provider: GitHub
+    artifact: USD.19.zip 
+    draft: false
+    prerelease: True
+    on:
+      branch: dev              
+
diff --git a/.github/workflows/windows.yaml b/.github/workflows/windows.yaml
new file mode 100644
index 0000000..64dc329
--- /dev/null
+++ b/.github/workflows/windows.yaml
@@ -0,0 +1,74 @@
+name: Windows Packaging
+on: push
+
+jobs:
+  build-core:
+    name: Build USD Core
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Get version for USD GBK fork
+        run: echo "::set-env name=USD_REF::$((Get-Content .\versions.json | ConvertFrom-Json).core)"
+      - name: Checkout USD GBK fork
+        uses: actions/checkout@v1
+        with:
+          repository: goodbyekansas/USD
+          ref: ${{ env.USD_REF }}
+          path: usd-core
+      - name: Set up Python 2.7 Environment
+        uses: actions/setup-python@v1
+        with:
+          python-version: '2.7.x'
+          architecture: 'x64'
+      - name: Install Python prereqs
+        run: |
+          pip install PySide PyOpenGL Jinja2
+      - name: Build USD Core
+        run: |
+          . ./windows/latest-vs.ps1
+          ./windows/build-usd-core.ps1 -pythondir "$Env:pythonLocation" -installdir ../result/usd-core -srcdir ../usd-core -builddir ../build/usd-core
+      - name: Zip USD Core Installed Files
+        run: 7z a usd-core-windows.zip ..\result\usd-core\*
+      - name: Upload USD Core Installation
+        uses: actions/upload-artifact@v1
+        with:
+          name: usd-core-windows
+          path: usd-core-windows.zip
+
+  build-usd-maya-2019:
+    name: Build USD Maya 2019
+    runs-on: windows-latest
+    needs: build-core
+    steps:
+      - uses: actions/checkout@v1
+      - name: Checkout Maya USD GBK fork
+        uses: actions/checkout@v1
+        with:
+          repository: goodbyekansas/maya-usd
+          ref: gbk-master
+          path: usd-maya
+      - name: Set up Python 2.7 Environment
+        uses: actions/setup-python@v1
+        with:
+          python-version: '2.7.x'
+          architecture: 'x64'
+      - name: Download USD core build
+        uses: actions/download-artifact@v1
+        with:
+          name: usd-core-windows
+          path: ../result/usd-core
+      - name: Download Maya 2019 DevKit
+        run: |
+          Invoke-WebRequest https://autodesk-adn-transfer.s3-us-west-2.amazonaws.com/ADN+Extranet/M%26E/Maya/devkit+2019/Autodesk_Maya_2019_2_Update_DEVKIT_Windows.zip -OutFile devkit_maya2019.zip
+          Expand-Archive -Path devkit_maya2019.zip -DestinationPath ..\maya-devkit -Force
+      - name: Install Python prereqs
+        run: pip install PySide PyOpenGL Jinja2
+      - name: Compile USD Maya 2019
+        run: ./windows/build-maya-usd.ps1 -srcdir ../usd-maya -builddir ../build/usd-maya -pythondir $Env:pythonLocation -usdcorelocation ../result/usd-core -patchdir ./windows/patches -devkitlocation ../maya-devkit -installdir ../result/usd-maya
+      - name: Zip all the files
+        run: 7z a usd-maya-2019-windows.zip ..\result\usd-maya\*
+      - name: Upload USD Maya 2019 build
+        uses: actions/upload-artifact@v1
+        with:
+          name: usd-maya-2019
+          path: usd-maya-2019-windows.zip
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bead760
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+sources
+result
diff --git a/README.md b/README.md
index 0621e24..1528285 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,25 @@
 # USDPackaging
 Packaging for USD on Windows and Linux
+
+# Building on Windows
+
+- Download and install Visual Studio 2019 (Community Edition is fine) from
+  [here](https://visualstudio.microsoft.com/downloads/). Make sure to select the "Desktop development with C++" workload during the installation.
+- Make sure Python 2 is installed and available in PATH
+
+## USD Core
+- Open a powershell prompt with administrative permissions.
+- First, some environment variables need to be set up for Visual Studio. This is done by using the
+  Powershell script at `./windows/latest-vs.ps1` like this:
+  ```shell
+  . ./windows/latest-vs.ps1
+  ```
+- Kick off the build process by issuing:
+```shell
+./windows/build-usd-core.ps1 -installdir <dir-to-put-result-in> -srcdir <path-to-us-core-clone> -builddir <dir-to-put-temp-build-stuff-in>
+```
+
+You can also use the python build script in the USD core sync directly but our powershell script
+makes sure to set needed boost options for building maya USD later.
+
+## USD Maya
diff --git a/maya-devkit.nix b/maya-devkit.nix
new file mode 100644
index 0000000..e42f5ec
--- /dev/null
+++ b/maya-devkit.nix
@@ -0,0 +1,16 @@
+{ nixpkgs ? import <nixpkgs> {} }:
+with nixpkgs;
+stdenv.mkDerivation {
+    name = "maya-devkit";
+    src = fetchurl {
+      url = "https://autodesk-adn-transfer.s3-us-west-2.amazonaws.com/ADN+Extranet/M%26E/Maya/devkit+2019/Autodesk_Maya_2019_2_Update_DEVKIT_Linux.tgz";
+      sha256 = "11v7hi1n01j7p7wkqabdjllndkic96mv6nq83rqh845psc684hs1";
+    };
+
+    phases = [ "unpackPhase" "buildPhase" ];
+
+    buildPhase = ''
+        cp -r . $out
+    '';
+}
+
diff --git a/maya-usd.nix b/maya-usd.nix
new file mode 100644
index 0000000..b323461
--- /dev/null
+++ b/maya-usd.nix
@@ -0,0 +1,43 @@
+{ nixpkgs ? import <nixpkgs> {} }:
+let
+  usd-core = nixpkgs.callPackage ./usd-core.nix {};
+  maya-devkit = nixpkgs.callPackage ./maya-devkit.nix {};
+in
+  with nixpkgs;
+  (overrideCC stdenv gcc6).mkDerivation {
+    name = "maya-usd";
+    nativeBuildInputs = [
+      cmake
+      git
+      cacert
+    ];
+
+    buildInputs = [
+      libGL
+      usd-core
+      python27
+      maya-devkit
+      python27Packages.jinja2
+      python27Packages.pyopengl
+      python27Packages.pyside2
+      xorg.libX11
+    ];
+
+    src = fetchFromGitHub {
+      owner = "goodbyekansas";
+      repo = "maya-usd";
+      rev = "master";
+      sha256 = "0idwxim4hfgkjv22rdikpbjzrm8zr7s6rfhlbp95ai4xb59zp0p0";
+    };
+
+    
+
+    phases = [ "unpackPhase" "buildPhase" ];
+
+    buildPhase = ''
+        ls ${usd-core}/bin
+        export PATH=${usd-core}/bin:$PATH
+        ${python27}/bin/python build.py --pxrusd-location ${usd-core} --maya-location /usr/autodesk/maya2019 --build-args="-DSKIP_USDMAYA_TESTS=ON" --install-location $out /tmp/workspace
+    '';
+  }
+
diff --git a/usd-core.nix b/usd-core.nix
new file mode 100644
index 0000000..be67e53
--- /dev/null
+++ b/usd-core.nix
@@ -0,0 +1,40 @@
+{ nixpkgs ? import <nixpkgs> {} }:
+let
+  pyenv = (nixpkgs.python27.withPackages (ps: with ps; [ pyside2 jinja2 pyopengl pyside2-tools ]));
+in
+with nixpkgs;
+gcc6Stdenv.mkDerivation {
+  name = "USD-Core";
+  nativeBuildInputs = [
+    cmake
+    cacert
+  ];
+
+  buildInputs = [ 
+    glew
+    xorg.libXxf86vm
+    xorg.libXrandr
+    xorg.libXcursor
+    xorg.libXinerama
+    xorg.libXi
+    zlib
+  ];
+
+  propagatedBuildInputs = [
+    pyenv
+  ];
+
+  src = fetchFromGitHub {
+    owner = "goodbyekansas";
+    repo = "USD";
+    rev = "gbk";
+    sha256 = "0i9b42sncs7mbg60198x6xzm8zr93g3c0pk0iwwf2srmn4vfz5cz";
+  };
+
+  phases = [ "unpackPhase" "buildPhase" ];
+
+  TBB_PLATFORM=linux;
+  buildPhase = ''
+    ${pyenv}/bin/python build_scripts/build_usd.py --build-args boost,"--with-date_time --with-thread --with-system --with-filesystem" --no-maya -v $out/
+  '';
+}
diff --git a/versions.json b/versions.json
new file mode 100644
index 0000000..2ebf058
--- /dev/null
+++ b/versions.json
@@ -0,0 +1,4 @@
+{
+  "core": "6bb97b31ccf6cbc5919aa1b376798ddf226e82cd",
+  "maya": "gbk-master"
+}
diff --git a/windows/build-maya-usd.ps1 b/windows/build-maya-usd.ps1
new file mode 100644
index 0000000..f39c9a9
--- /dev/null
+++ b/windows/build-maya-usd.ps1
@@ -0,0 +1,30 @@
+param (
+    [Parameter(Mandatory=$true)][string]$srcdir,
+    [Parameter(Mandatory=$true)][string]$builddir,
+    [Parameter(Mandatory=$true)][string]$installdir,
+    [Parameter(Mandatory=$true)][string]$usdcorelocation,
+    [Parameter(Mandatory=$true)][string]$devkitlocation,
+    [string]$pythondir = "C:\Python27",
+    [Parameter(Mandatory=$true)][string]$patchdir
+ )
+
+# these need to be full paths for CMake to find things
+$usdcorelocation = (Resolve-Path $usdcorelocation).Path
+$devkitlocation = (Resolve-Path $devkitlocation).Path
+
+echo "Applying patches to usd core..."
+git apply --directory=$usdcorelocation --unsafe-paths (get-item $patchdir\*.patch)
+
+if ($?) {
+    echo "Patches applied"
+} else {
+    echo "Failed to apply patches, exiting..."
+    #exit 1
+}
+
+python $srcdir/build.py $builddir `
+--devkit-location $devkitlocation/devkitBase `
+--pxrusd-location $usdcorelocation `
+--install-location $installdir `
+--generator "Visual Studio 16 2019" `
+--build-relwithdebug
diff --git a/windows/build-usd-core.ps1 b/windows/build-usd-core.ps1
new file mode 100644
index 0000000..eaa9e5e
--- /dev/null
+++ b/windows/build-usd-core.ps1
@@ -0,0 +1,26 @@
+param (
+    [string]$pythondir,
+    [string]$installdir = "installed",
+    [Parameter(Mandatory=$true)][string]$srcdir,
+    [Parameter(Mandatory=$true)][string]$builddir
+ )
+
+$srcdir = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($srcdir)
+$installdir = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($installdir)
+$builddir = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($builddir)
+
+$pythondirarg = ""
+if ($pythondir) {
+    $pythondirarg = "-DPython_ROOT_DIR='$pythondir' -DPython_EXECUTABLE='$pythondir\python.exe'"
+}
+
+$usdoptions = ""
+if ($pythondirarg) {
+    $usdoptions = "USD,$pythondirarg"
+}
+
+python $srcdir/build_scripts/build_usd.py `
+--build $builddir/build `
+--src $builddir/src `
+$installdir `
+--build-args $usdoptions boost,"--with-date_time --with-thread --with-system --with-filesystem"
diff --git a/windows/latest-vs.ps1 b/windows/latest-vs.ps1
new file mode 100644
index 0000000..3ab6ddb
--- /dev/null
+++ b/windows/latest-vs.ps1
@@ -0,0 +1,6 @@
+$vswhere = "$Env:ProgramFiles (x86)\Microsoft Visual Studio\Installer\vswhere.exe"
+$installationPath = & $vswhere -latest -property installationPath
+& "${env:COMSPEC}" /s /c "`"$installationPath\Common7\Tools\vsdevcmd.bat`" -no_logo -arch=amd64 && set" | foreach-object {
+  $name, $value = $_ -split '=', 2
+  set-content env:\"$name" $value
+}
diff --git a/windows/patches/hdstream.patch b/windows/patches/hdstream.patch
new file mode 100644
index 0000000..f6f3339
--- /dev/null
+++ b/windows/patches/hdstream.patch
@@ -0,0 +1,11 @@
+--- a/cmake/pxrTargets-release.cmake
++++ b/cmake/pxrTargets-release.cmake
+@@ -343,7 +343,7 @@ set_target_properties(hdStream PROPERTIES
+   )
+ 
+ list(APPEND _IMPORT_CHECK_TARGETS hdStream )
+-list(APPEND _IMPORT_CHECK_FILES_FOR_hdStream "${_IMPORT_PREFIX}/plugin/usd/hdStream.lib" "${_IMPORT_PREFIX}/plugin/usd/hdStream.dll" )
++# list(APPEND _IMPORT_CHECK_FILES_FOR_hdStream "${_IMPORT_PREFIX}/plugin/usd/hdStream.lib" "${_IMPORT_PREFIX}/plugin/usd/hdStream.dll" )
+ 
+ # Import target "usdImaging" for configuration "Release"
+ set_property(TARGET usdImaging APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
diff --git a/windows/patches/usddancingcubes.patch b/windows/patches/usddancingcubes.patch
new file mode 100644
index 0000000..49ee517
--- /dev/null
+++ b/windows/patches/usddancingcubes.patch
@@ -0,0 +1,11 @@
+--- a/cmake/pxrTargets-release.cmake
++++ b/cmake/pxrTargets-release.cmake
+@@ -433,7 +433,7 @@ set_target_properties(usdDancingCubesExample PROPERTIES
+   )
+ 
+ list(APPEND _IMPORT_CHECK_TARGETS usdDancingCubesExample )
+-list(APPEND _IMPORT_CHECK_FILES_FOR_usdDancingCubesExample "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdDancingCubesExample.lib" "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdDancingCubesExample.dll" )
++# list(APPEND _IMPORT_CHECK_FILES_FOR_usdDancingCubesExample "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdDancingCubesExample.lib" "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdDancingCubesExample.dll" )
+ 
+ # Import target "usdRecursivePayloadsExample" for configuration "Release"
+ set_property(TARGET usdRecursivePayloadsExample APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
diff --git a/windows/patches/usdobj.patch b/windows/patches/usdobj.patch
new file mode 100644
index 0000000..2bca8d5
--- /dev/null
+++ b/windows/patches/usdobj.patch
@@ -0,0 +1,11 @@
+--- a/cmake/pxrTargets-release.cmake
++++ b/cmake/pxrTargets-release.cmake
+@@ -423,7 +423,7 @@ set_target_properties(usdObj PROPERTIES
+   )
+ 
+ list(APPEND _IMPORT_CHECK_TARGETS usdObj )
+-list(APPEND _IMPORT_CHECK_FILES_FOR_usdObj "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdObj.lib" "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdObj.dll" )
++# list(APPEND _IMPORT_CHECK_FILES_FOR_usdObj "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdObj.lib" "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdObj.dll" )
+ 
+ # Import target "usdDancingCubesExample" for configuration "Release"
+ set_property(TARGET usdDancingCubesExample APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
diff --git a/windows/patches/usdrecursivepayload.patch b/windows/patches/usdrecursivepayload.patch
new file mode 100644
index 0000000..2aa9704
--- /dev/null
+++ b/windows/patches/usdrecursivepayload.patch
@@ -0,0 +1,11 @@
+--- a/cmake/pxrTargets-release.cmake
++++ b/cmake/pxrTargets-release.cmake
+@@ -443,7 +443,7 @@ set_target_properties(usdRecursivePayloadsExample PROPERTIES
+   )
+ 
+ list(APPEND _IMPORT_CHECK_TARGETS usdRecursivePayloadsExample )
+-list(APPEND _IMPORT_CHECK_FILES_FOR_usdRecursivePayloadsExample "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdRecursivePayloadsExample.lib" "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdRecursivePayloadsExample.dll" )
++# list(APPEND _IMPORT_CHECK_FILES_FOR_usdRecursivePayloadsExample "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdRecursivePayloadsExample.lib" "${_IMPORT_PREFIX}/share/usd/examples/plugin/usdRecursivePayloadsExample.dll" )
+ 
+ # Import target "usdSchemaExamples" for configuration "Release"
+ set_property(TARGET usdSchemaExamples APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
diff --git a/windows/patches/usdshaders.patch b/windows/patches/usdshaders.patch
new file mode 100644
index 0000000..6d1e3eb
--- /dev/null
+++ b/windows/patches/usdshaders.patch
@@ -0,0 +1,11 @@
+--- a/cmake/pxrTargets-release.cmake
++++ b/cmake/pxrTargets-release.cmake
+@@ -373,7 +373,7 @@ set_target_properties(usdShaders PROPERTIES
+   )
+ 
+ list(APPEND _IMPORT_CHECK_TARGETS usdShaders )
+-list(APPEND _IMPORT_CHECK_FILES_FOR_usdShaders "${_IMPORT_PREFIX}/lib/usdShaders.lib" "${_IMPORT_PREFIX}/lib/libusdShaders.dll" )
++# list(APPEND _IMPORT_CHECK_FILES_FOR_usdShaders "${_IMPORT_PREFIX}/lib/usdShaders.lib" "${_IMPORT_PREFIX}/lib/libusdShaders.dll" )
+ 
+ # Import target "usdSkelImaging" for configuration "Release"
+ set_property(TARGET usdSkelImaging APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)