By the nature of embedded development one spends a lot of time debugging on target devices. SLIME experience for the most part is as smooth as on local host with the exception of cross referencing. Swank backend on target is reporting local paths in xref records which the frontend on your host then tries to open. The canonical workaround from the user manual is using slime-tramp contrib, allowing you to navigate the source tree on remote target over SSH. I however greatly prefer to work on th...