XML Schema for OS API 1.1 does not load

I'm not sure if it helps, but a quick look at the schema shows that the issues lie in the following lines:

xmllint --schema server.xsd "<ignoreme/>"
common.xsd:38: element complexType: Schemas parser error : complex type 'Metadata': The content model is not determinist.
server.xsd:427: element complexType: Schemas parser error : complex type 'Servers': The content model is not determinist.
server.xsd:518: element complexType: Schemas parser error : complex type 'Addresses': The content model is not determinist.
server.xsd:527: element complexType: Schemas parser error : complex type 'AddressList': The content model is not determinist.
WXS schema server.xsd failed to compile

Removing those 4 lines makes the schema validate, but since I've never used an xml schema, those lines are probably important? :)

The schemas are described in XSD version 1.1 with support for backward compatibility with XSD 1.0. Looks like lxml doesn't support 1.1 schema or the backward compatible attributes (min/maxVersion).

As a work around, I've written an XSLT that allows converting the XSDs to version 1.0. I'm attaching this. My recommendation would be that we process the XSDs with the XSL before we have lxml consume them.

Going XSD 1.0 means that while we can validate core attributes and elements, we won't be able to find errors with the extensions. Not a big deal since there are no extensions defined right now anyway.

I realize that there are only a few 1.1 implementations but things seem to be moving in this direction and we have good work arounds for the time being.

You can run the XSL with xsltproc, you should be able to automate this in the code

 xsltproc .s1.0p.xsl server.xsd

Thierry: I think this is probably a non-issue now