Make location of validator.log depend on a variable from vimrc

[KNAFMI1]

Hey,

I'm running into this issue that the location of validator.log is more or less hardcoded

It would be kind of nice if that path could be defined by a variable in vimrc.

In my case I have plugins installed and managed globally. Users can't write into this directory, only read it. Therefore, when validator starts, the users get a permission error. To avoid that I could instead set this path in the global vimrc to a place in the respective user's home, for instance ~/.vim/validator.log