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='2021-09-01 23:41:42 +0200'>2021-09-01</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=f95bdeb93a30b89c821627aa91da4ef3afaeb5af'>import: utils: Skip not found packages.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/import/utils.scm (recursive-import): Skip packages when the
package returned by 'repo-&gt;guix-package' is false.
* tests/import-utils.scm: New tests.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sarah Morgensen</td></tr>
<tr><td><span title='2020-12-27 12:06:49 +0100'>2020-12-27</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=5aae614868b8a7e3097ae70f6024352aa5c8de21'>import/utils: alist-&gt;package: Handle SPDX license names only as fallback.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://bugs.gnu.org/45453&gt;.

* guix/import/utils.scm (alist-&gt;package): Find plain license names in (guix
licenses) first, and only fall back to SPDX names on error.
* tests/import-utils.scm ("alist-&gt;package with SPDX license name 1/2",
"alist-&gt;package with SPDX license name 2/2"): New tests.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-12-02 22:09:23 +0100'>2020-12-02</span></td><td><a href='/guix/commit/tests/import-utils.scm?id=bea3b17739fc591b8cf6db1f8d28a6f6c9585577'>import: utils: 'recursive-import' accepts an optional version parameter.</a><span class='msg-avail'>...<span class='msg-tooltip'>This adds a key VERSION to 'recursive-import' and moves the parameter REPO to
a key. This also changes all the places that rely on 'recursive-import'.

* guix/import/utils.scm (recursive-import): Add the VERSION key. Make REPO a
  key.
  (package-&gt;definition): Add optional 'append-version?'.
* guix/scripts/import/crate.scm (guix-import-crate): Add the VERSION key.
* guix/import/crate.scm (crate-&gt;guix-package): Add the VERSION key.
  (crate-recursive-import): Pass VERSION to recursive-import, remove now
  unnecessary code.
* guix/import/cran.scm (cran-&gt;guix-package, cran-recursive-import): Change the
  REPO parameter to a key.
* guix/import/elpa.scm (elpa-&gt;guix-package, elpa-recursive-import): Likewise.
* guix/import/gem.scm (gem-&gt;guix-package, recursive-import): Likewise.
* guix/import/opam.scm (opam-recurive-import): Likewise.
* guix/import/pypi.scm (pypi-recursive-import): Likewise.
* guix/import/stackage.scm (stackage-recursive-import): Likewise.
* guix/scripts/import/cran.scm (guix-import-cran): Likewise.
* guix/scripts/import/elpa.scm (guix-import-elpa): Likewise.
* tests/elpa.scm (eval-test-with-elpa): Likewise.
* tests/import-utils.scm (recursive-import): Likewise.

Co-authored-by: Hartmut Goebel &lt;h.goebel@crazy-compilers.com&gt;
</span></span></td><td>Martin Becze</td></tr>