ParaView and Catalyst use python3. (#11485)

Use python3 for latest paraview and catalyst versions.

var/spack/repos/builtin/packages/catalyst/package.py

@@ -19,6 +19,7 @@ class Catalyst(CMakePackage):
     _urlfmt_gz = 'http://www.paraview.org/files/v{0}/ParaView-v{1}{2}.tar.gz'
     _urlfmt_xz = 'http://www.paraview.org/files/v{0}/ParaView-v{1}{2}.tar.xz'
 
+    version('5.6.0', sha256='5b49cb96ab78eee0427e25200530ac892f9a3da7725109ce1790f8010cb5b377')
     version('5.5.2', '7eb93c31a1e5deb7098c3b4275e53a4a')
     version('5.5.1', 'a7d92a45837b67c3371006cc45163277')
     version('5.5.0', 'a8f2f41edadffdcc89b37fdc9aa7f005')
@@ -31,17 +32,35 @@ class Catalyst(CMakePackage):
     version('4.4.0', 'fa1569857dd680ebb4d7ff89c2227378')
 
     variant('python', default=False, description='Enable Python support')
+    variant('python3', default=False, description='Enable Python3 support')
     variant('essentials', default=False, description='Enable Essentials support')
-    variant('extras', default=False, description='Enable Extras support')
+    variant('extras', default=False, description='Enable Extras support. Implies Essentials.')
-    variant('rendering', default=False, description='Enable VTK Rendering support')
+    variant('rendering', default=True, description='Enable Rendering support. Implies Extras and Essentials.')
     variant('osmesa', default=True, description='Use offscreen rendering')
     conflicts('+osmesa', when='~rendering')
 
+    conflicts('+python', when='+python3')
+    conflicts('+python', when='@5.6:')
+    conflicts('+python3', when='@:5.5')
+
+    # Workaround for
+    # adding the following to your packages.yaml
+    # packages:
+    #   python:
+    #     version: [3, 2]
+    # without this you'll get:
+    # paraview requires python version 3:, but spec asked for 2.7.16
+    # for `spack spec paraview+python`
+    # see spack pull request #11539
+    # extends('python', when='+python')
+    extends('python', when='+python')
+    extends('python', when='+python3')
+
     depends_on('git', type='build')
     depends_on('mpi')
-    depends_on('python@2:2.8', when='+python', type=("build", "link", "run"))
+    depends_on('python@2.7:2.8', when='+python', type=('build', 'link', 'run'))
-    depends_on('python', when='~python', type=("build"))
+    depends_on('python@3:', when='+python3', type=('build', 'link', 'run'))
-    depends_on('gl@3.2', when='+rendering')
+    depends_on('gl@3.2:', when='+rendering')
     depends_on('mesa+osmesa', when='+rendering+osmesa')
     depends_on('glx', when='+rendering~osmesa')
     depends_on('cmake@3.3:', type='build')
@@ -77,16 +96,19 @@ def editions(self):
         """Transcribe spack variants into names of Catalyst Editions"""
         selected = ['Base']  # Always required
 
-        if '+python' in self.spec:
+        if '+python' in self.spec or '+python3' in self.spec:
             selected.append('Enable-Python')
 
         if '+essentials' in self.spec:
             selected.append('Essentials')
 
         if '+extras' in self.spec:
+            selected.append('Essentials')
             selected.append('Extras')
 
         if '+rendering' in self.spec:
+            selected.append('Essentials')
+            selected.append('Extras')
             selected.append('Rendering-Base')
 
         return selected
@@ -134,7 +156,7 @@ def setup_environment(self, spack_env, run_env):
         run_env.prepend_path('LIBRARY_PATH', lib_dir)
         run_env.prepend_path('LD_LIBRARY_PATH', lib_dir)
 
-        if '+python' in self.spec:
+        if '+python' in self.spec or '+python3' in self.spec:
             python_version = self.spec['python'].version.up_to(2)
             run_env.prepend_path('PYTHONPATH', join_path(lib_dir,
                                  'python{0}'.format(python_version),
@@ -182,8 +204,13 @@ def nvariant_bool(feature):
             '-DVTK_USE_SYSTEM_EXPAT:BOOL=ON',
             '-DVTK_USE_X:BOOL=%s' % nvariant_bool('+osmesa'),
             '-DVTK_USE_OFFSCREEN:BOOL=%s' % variant_bool('+osmesa'),
-            '-DVTK_OPENGL_HAS_OSMESA:BOOL=%s' % variant_bool('+osmesa')
+            '-DVTK_OPENGL_HAS_OSMESA:BOOL=%s' % variant_bool('+osmesa'),
+            '-DPARAVIEW_ENABLE_PYTHON:BOOL=%s' % variant_bool('+python')
         ]
+        if '+python' in spec or '+python3' in spec:
+            cmake_args.append(
+                '-DPYTHON_EXECUTABLE:FILEPATH=%s' %
+                spec['python'].command.path)
         return cmake_args
 
     def cmake(self, spec, prefix):

var/spack/repos/builtin/packages/paraview/package.py

@@ -14,7 +14,9 @@ class Paraview(CMakePackage):
     homepage = 'http://www.paraview.org'
     url      = "http://www.paraview.org/files/v5.3/ParaView-v5.3.0.tar.gz"
     _urlfmt  = 'http://www.paraview.org/files/v{0}/ParaView-v{1}{2}.tar.gz'
+    git      = "https://gitlab.kitware.com/paraview/paraview.git"
 
+    version('develop', branch='master', submodules=True)
     version('5.6.0', sha256='cb8c4d752ad9805c74b4a08f8ae6e83402c3f11e38b274dba171b99bb6ac2460')
     version('5.5.2', '7eb93c31a1e5deb7098c3b4275e53a4a')
     version('5.5.1', 'a7d92a45837b67c3371006cc45163277')
@@ -30,6 +32,7 @@ class Paraview(CMakePackage):
     variant('plugins', default=True,
             description='Install include files for plugins support')
     variant('python', default=False, description='Enable Python support')
+    variant('python3', default=False, description='Enable Python3 support')
     variant('mpi', default=True, description='Enable MPI support')
     variant('osmesa', default=False, description='Enable OSMesa support')
     variant('qt', default=False, description='Enable Qt (gui) support')
@@ -37,11 +40,33 @@ class Paraview(CMakePackage):
     variant('examples', default=False, description="Build examples")
     variant('hdf5', default=False, description="Use external HDF5")
 
-    depends_on('python@2:2.8', when='+python')
+    conflicts('+python', when='+python3')
+    conflicts('+python', when='@5.6:')
+    conflicts('+python3', when='@:5.5')
+
+    # Workaround for
+    # adding the following to your packages.yaml
+    # packages:
+    #   python:
+    #     version: [3, 2]
+    # without this you'll get:
+    # paraview requires python version 3:, but spec asked for 2.7.16
+    # for `spack spec paraview+python+osmesa`
+    # see spack pull request #11539
+    extends('python', when='+python')
+    extends('python', when='+python3')
+
+    depends_on('python@2.7:2.8', when='+python', type=('build', 'run'))
+    depends_on('python@3:', when='+python3', type=('build', 'run'))
+
     depends_on('py-numpy', when='+python', type=('build', 'run'))
+    depends_on('py-numpy', when='+python3', type=('build', 'run'))
     depends_on('py-mpi4py', when='+python+mpi', type=('build', 'run'))
-    # Matplotlib >2.x requires Python 3
+    depends_on('py-mpi4py', when='+python3+mpi', type=('build', 'run'))
-    depends_on('py-matplotlib@:2.99', when='+python', type='run')
+
+    depends_on('py-matplotlib@:2', when='+python', type='run')
+    depends_on('py-matplotlib@3:', when='+python3', type='run')
+
     depends_on('mpi', when='+mpi')
     depends_on('qt+opengl', when='@5.3.0:+qt+opengl2')
     depends_on('qt~opengl', when='@5.3.0:+qt~opengl2')
@@ -123,7 +148,7 @@ def setup_environment(self, spack_env, run_env):
         run_env.prepend_path('LIBRARY_PATH', lib_dir)
         run_env.prepend_path('LD_LIBRARY_PATH', lib_dir)
 
-        if '+python' in self.spec:
+        if '+python' in self.spec or '+python3' in self.spec:
             if self.spec.version <= Version('5.4.1'):
                 pv_pydir = join_path(lib_dir, 'site-packages')
                 run_env.prepend_path('PYTHONPATH', pv_pydir)
@@ -183,7 +208,7 @@ def nvariant_bool(feature):
                 '-DPARAVIEW_QT_VERSION=%s' % spec['qt'].version[0],
             ])
 
-        if '+python' in spec:
+        if '+python' in spec or '+python3' in spec:
             cmake_args.extend([
                 '-DPARAVIEW_ENABLE_PYTHON:BOOL=ON',
                 '-DPYTHON_EXECUTABLE:FILEPATH=%s' % spec['python'].command.path