Approach to changing IO assignments in Qsys with script

Just to close this item out here is what I ended up doing, best way? probably not.

I decided against using the revision feature because we use git version control using it would complicate things. If we didn't use git I would have definitely looked into using it.

So what I ended up with is a bash script that copies each of the uniquely named .qsys files to the soc_system.qsys file and runs a makefile which builds the fpga. Only the uniquely named .qsys files are checked into git, the soc_system.qsys is not. If the I/O ever needs to be modified the working pair of uniquely named .qsys files will need to be updated manually but that is very rare in our system (we are in production support mode).

Thanks for the different ideas.