Merge branch 'new-vasp-parser-fixes' into 'reprocess'

New vasp parser fixes

See merge request !271

vasp @ b6b2b661

-Subproject commit ab933a73649ef7be873206a7fdb6aa0ef9886043
+Subproject commit b6b2b661b29e363c41428a27ede19dcde77f63c9

nomad/parsing/file_parser/xml_parser.py

@@ -17,6 +17,7 @@ import os
 import re
 import numpy as np
 from xml.etree import ElementTree
+from lxml import etree
 
 from nomad.parsing.file_parser import FileParser
 
@@ -53,6 +54,13 @@ class XMLParser(FileParser):
                 self._file_handler = ElementTree.parse(self.open(self.mainfile)).getroot()
             except Exception:
                 self.logger.error('failed to load xml file')
+                try:
+                    # I cannot use the lxml XMLParser directly because it is not compatible with
+                    # the ElementTree implementation.
+                    xml = etree.parse(self.open(self.mainfile), parser=etree.XMLParser(recover=True))
+                    self._file_handler = ElementTree.fromstring(etree.tostring(xml))
+                except Exception:
+                    pass
             self.init_parameters()
 
         return self._file_handler

requirements.txt

@@ -39,6 +39,7 @@ mdtraj
 mdanalysis
 nomadcore
 nomad_dos_fingerprints
+lxml
 
 # [infrastructure]
 optimade==0.8.1