gdb

(Following we use $NIM means Nim source code repo)

# gdb command
source $NIM/tools/debug/nim-gdb.py

or

gdb -x $NIM/tools/debug/nim-gdb.py —args ...

New command:

$ xx → call Nim’s $

lldb

# lldb command
command script import $NIM/tools/debug/nimlldb.py