The VTK_MAJOR_VERSION macro is not available by default in newer versions.
This is a hack to expose it without changing all imports.

diff --git a/addons/vtk/CMakeLists.txt b/addons/vtk/CMakeLists.txt
--- a/addons/vtk/CMakeLists.txt
+++ b/addons/vtk/CMakeLists.txt
@@ -36,6 +36,8 @@ IF(WITH_VTKIO)
     ELSE()
       SET(SELECTED_VTK_LIBS ${VTK_MODULES_REQUESTED})
     ENDIF()
+
+   add_compile_definitions(VTK_MAJOR_VERSION=${VTK_VERSION_MAJOR})
     
     SET(VTK_LINK_LIBS_MESH ${SELECTED_VTK_LIBS} miamesh)
     SET(VTK_LINK_LIBS_3D ${SELECTED_VTK_LIBS} mia3d)
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<tr><td><span title='2014-07-02 13:58:02 -0500'>2014-07-02</span></td><td><a href='/guix/commit/gnu/packages/patches/glib-tests-desktop.patch?id=59bad04fe4dd3f030ac1e11530799a96cdc121e8'>gnu: glib: Upgrade to 2.40.0.</a><span class='msg-avail'>...</span></td><td>Eric Bavier</td></tr>
vic Courtès</td></tr>
<tr><td><span title='2019-09-16 23:54:58 -0400'>2019-09-16</span></td><td><a href='/guix/commit/nix/nix-daemon/nix-daemon.cc?id=82c4ad9646aa65f96a809d089f318680126d8b39'>daemon: Include 'config.h' in 'nix-daemon.cc'.</a><span class='msg-avail'>...</span></td><td>Timothy Sample</td></tr>
<tr><td><span title='2019-09-08 11:49:24 +0200'>2019-09-08</span></td><td><a href='/guix/commit/nix/nix-daemon/nix-daemon.cc?id=f6919ebdc6b0ce0286814cc6ab0564b1a4c67f5f'>daemon: Run 'guix substitute' directly and assume a single substituter.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-08 11:49:24 +0200'>2019-09-08</span></td><td><a href='/guix/commit/nix/nix-daemon/nix-daemon.cc?id=bc69ea2d605810cc32e13ed03d5848b8dc358b61'>daemon: Run 'guix offload' directly.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>