I am not sure if I should start off a new bug for this - but here goes. I have found a version on github which I branched to here https://github.com/amworsley/celtx
I have managed to compile it under stetch into a binary that starts up - but doesn't do very much at the moment. I think it is not able to find it's examples and other structural issues. I could do with some guidance on where to go further . It appears to bear a lot of resemblance to mozilla browser so anyone who understands that build system would be useful or has used the system in the past so I can try loading up an example. Thanks Andrew