message: Verify python existance
diff: @@ -20,6 +20,8 @@ stages:
  image: $DOCKER_REGISTRY/ospray/docker-images:centos7-mod
  before_script:
  - module load python/$PYTHON_VERSION
  + - echo $Python3_ROOT
  + - ls $Python3_ROOT
  .ubuntu18.04:
  tags: [ build, docker, modules ]
  @@ -33,16 +35,22 @@ stages:
  tags: [ osx, clang ]
  before_script:
  - export Python3_ROOT=$PYTHON_ROOT_MACOS
  + - echo $Python3_ROOT
  + - ls $Python3_ROOT
  .macos-sign:
  tags: [ osx, clang, sign ]
  before_script:
  - export Python3_ROOT=$PYTHON_ROOT_MACOS
  + - echo $Python3_ROOT
  + - ls $Python3_ROOT
  .windows:
  tags: [ win, msvc15 ]
  before_script:
  - $env:Python3_ROOT = $PYTHON_ROOT_WINDOWS
  + - echo $env:Python3_ROOT
  + - ls $env:Python3_ROOT
  .linux-build-artifacts:
  artifacts:
  