"nightly" versions also allow to use unstable features, and unstable features may remain so for a very long time (potentially forever) without breaking, so an old nightly could maybe work
I read parts of the Linux kernel source code pretty often, and getting the definition of a function is often pretty involved:
- I don't always know the return code type, as the calling code assigned a field whose definition I don't know to find either
- I don't know if it's a C function or a preprocessor macro
This often results in me searching for the exact function name, and combing through the uses in the drivers.
You then need to re-start all that recursively to understand the function you just read.
I could use clangd for that, but I don't have the ressources on my laptop to compile a kernel