Fixed testing python package install.

.gitlab-ci.yml

@@ -109,7 +109,7 @@ install_tests:
     - python setup.py sdist
     - pip install dist/nomad-lab-*.tar.gz
     - python -c "import nomad.datamodel, nomad.datamodel.metainfo, nomad.client"
-    - pip install dist/nomad-lab-*.tar.gz[parsing]
+    - pip install `echo dist/nomad-lab-*.tar.gz`[parsing]
     - python -m nomad.cli parse tests/data/parsers/vasp/vasp.xml
 
 deploy: