Sounds like the solution then would be to give interviewers all of the systems and support they would normally have access to on the job and see how well they a

Sounds like the solution then would be to give interviewers all of the systems and support they would normally have access to on the job and see how well they adapt to a conventional task or an issue that was recently solved by someone in a similar position on your company, and have their result evaluated by someone involved with the implementation or fix. That would tell you if their workflow would fit your company much more than knowing how to run a coding challenge would.