diff --git a/README.rst b/README.rst
index 4e6fda3b..b96be660 100644
--- a/README.rst
+++ b/README.rst
@@ -137,7 +137,7 @@ Now, you can build, then install PlantGL :
     cmake .. -DCMAKE_INSTALL_PREFIX=${CONDA_PREFIX}
 
     # Windows -> Visual Studio 2015 is required
-    cmake .. -G "Visual Studio 14 2015 Win64" -T host=x64 -DCMAKE_INSTALL_PREFIX=%CONDA_PREFIX%
+    cmake .. -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=%LIBRARY_PREFIX%  ..
 
     cmake --build . --target install --config Release
 
diff --git a/appveyor.yml b/appveyor.yml
index a98e1c48..85eb9c3d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -2,18 +2,15 @@ platform:
   - x64
 
 environment:
+  CONDA_RECIPE: conda
+  CONDA_VERSION: 3
+      
   matrix:
   # Add here environement variables to control the Travis CI build
-    - CONDA_RECIPE: conda
-      CONDA_VERSION: 3
-      CONDA_PY: 37
-    - CONDA_RECIPE: conda
-      CONDA_VERSION: 3
-      CONDA_PY: 38
+    - CONDA_PY: 37
+    - CONDA_PY: 38
       CONDA_NPY: 116
-    - CONDA_RECIPE: conda
-      CONDA_VERSION: 3
-      CONDA_PY: 39
+    - CONDA_PY: 39
       CONDA_NPY: 119
 
 install:
diff --git a/build-util/compile-osx.sh b/build-util/compile-osx.sh
index 2bf8875a..12a397ac 100755
--- a/build-util/compile-osx.sh
+++ b/build-util/compile-osx.sh
@@ -7,6 +7,7 @@ cmake -DCMAKE_INSTALL_PREFIX=${CONDA_PREFIX} \
       -DOPENGL_gl_LIBRARY=/Users/fboudon/Develop/SDK/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework \
       -DOPENGL_glu_LIBRARY=/Users/fboudon/Develop/SDK/MacOSX10.9.sdk/System/Library/Frameworks/OpenGL.framework \
       -DBoost_DEBUG=ON \
+      -DCMAKE_IGNORE_PATH=/opt/local/lib \
       -LAH ..
 
 #cmake -DCMAKE_BUILD_TYPE=Release -DBoost_INCLUDE_DIR=/opt/local/include ..
@@ -15,3 +16,7 @@ make
 make install
 cd ..
 python setup.py install
+
+{
+    
+}
\ No newline at end of file
diff --git a/build-util/plantgl-devel-win.yaml b/build-util/plantgl-devel-win.yaml
index bb314a82..0dc1300e 100644
--- a/build-util/plantgl-devel-win.yaml
+++ b/build-util/plantgl-devel-win.yaml
@@ -1,29 +1,30 @@
 name: plantgl-devel
 channels:
-    - local
-    - defaults
     - conda-forge
-    - openalea
+    - fredboudon
+    - msys2
+    - defaults
 dependencies:
     - python
-    - boost
-    - qt =5
+    - setuptools
+    - cmake
+    - numpy
+    - boost <=1.72
+    - qt
     - pyqt
-    - ipython
-    - qtconsole
-    - pyopengl
-    - pyqglviewer
-    - nose
-    - m2-bison [win]
-    - m2-flex [win]
+    - libpng
+    - zlib
     - qhull
+    - cgal-cpp
+    - gmp 
+    - mpfr 
     - eigen
     - ann
-    - menuinst
-    - patch
-    - setuptools
-    - openalea.deploy
-    - cmake >=3.12.0
-    - menuinst [win]
+    - ipython
+    - pyopengl
+    - pyqglviewer
+    - pytest
+    - m2-bison
+    - m2-flex 
     - scipy
-    - matplotlib
+    - matplotlib-base
diff --git a/build-util/plantgl-devel.yaml b/build-util/plantgl-devel.yaml
index 87813c9f..33623924 100644
--- a/build-util/plantgl-devel.yaml
+++ b/build-util/plantgl-devel.yaml
@@ -1,31 +1,29 @@
 name: plantgl-devel
 channels:
-    - local
+    - conda-forge
+    - fredboudon
     - defaults
-    #- conda-forge
-    - openalea
-    - ethan13310
 dependencies:
-    - python =3.7
+    - python
+    - setuptools
+    - cmake
+    - numpy
     - boost
-    - qt =5
+    - qt
     - pyqt
-    - ipython
-    - qtconsole
-    - pyopengl
-    #- pyqglviewer
-    - nose
-    - bison [unix]
-    - flex [unix]
-    - gmp [unix]
-    - mpfr [unix]
-    - cgal [unix]
+    - libpng
+    - zlib
     - qhull
+    - cgal-cpp
+    - gmp 
+    - mpfr 
     - eigen
     - ann
-    - patch
-    - setuptools
-    - openalea.deploy
-    - cmake >=3.12.0
+    - ipython
+    - pyopengl
+    - pyqglviewer
+    - pytest
+    - bison
+    - flex
     - scipy
-    - matplotlib
+    - matplotlib-base
diff --git a/build.sh b/build.sh
index 5c72b163..7213ebbf 100755
--- a/build.sh
+++ b/build.sh
@@ -1 +1 @@
-conda build . -c conda-forge -c fredboudon  --python=3.8 --numpy=1.16 | tee build.log
+conda build . -c conda-forge -c fredboudon  --python=3.7 --numpy=1.11 | tee build.log
diff --git a/conda/meta.yaml b/conda/meta.yaml
index 78670f5f..e56cbbc6 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -40,7 +40,7 @@ requirements:
           
   build:
       - python {{PY_VER}}                 
-      - binutils_impl_linux-64     # [linux]
+      - binutils_impl_linux-64            # [linux]
       - {{ compiler('cxx') }}
       - bison                             # [unix]
       - flex                              # [unix]
@@ -50,15 +50,15 @@ requirements:
       - cmake
       - pkg-config                        # [linux]
       - make                              # [unix]
-      - {{ cdt('mesa-libgl-devel') }}      # [linux]
-      - {{ cdt('mesa-dri-drivers') }}      # [linux]
-      - {{ cdt('libxext') }}               # [linux]
-      - {{ cdt('libselinux') }}            # [linux]
-      - {{ cdt('libxdamage') }}            # [linux]
-      - {{ cdt('libxfixes') }}             # [linux]
-      - {{ cdt('libxxf86vm') }}            # [linux]
-      - {{ cdt('libxcb') }}                # [linux]
-      - {{ cdt('expat-devel') }}        # [linux]
+      - {{ cdt('mesa-libgl-devel') }}     # [linux]
+      - {{ cdt('mesa-dri-drivers') }}     # [linux]
+      - {{ cdt('libxext') }}              # [linux]
+      - {{ cdt('libselinux') }}           # [linux]
+      - {{ cdt('libxdamage') }}           # [linux]
+      - {{ cdt('libxfixes') }}            # [linux]
+      - {{ cdt('libxxf86vm') }}           # [linux]
+      - {{ cdt('libxcb') }}               # [linux]
+      - {{ cdt('expat-devel') }}          # [linux]
 
   run:
       - python {{PY_VER}}