nixseparatedebuginfod

Probably not at the moment. _Software Counter mode_ rr requires robust support for debuginfod in your Linux distribution. NixOS to my knowledge does not provide debuginfo via a dedicated debuginfod server for all packages so this will make things unreliable for debugging via _Software Counters mode_ rr for packages for which debuginfo is not available via debuginfod. I recently learned about https://github.com/symphorien/nixseparatedebuginfod for nix (note: I haven't used this so I don't know how reliable or good this is). Anyways, this project requires setting `separateDebuginfo = true;` for the derivation for the debuginfo to be available via debuginfod. This is an opt in approach but we need pervasive support like it exists in Fedora (and some others).

Author doesn't mention Nix by name, so I wonder if they're aware of it. While it as a build system has more than its fair share of "dark corners", it does solve the reproducibility of all paths (including with a chroot, to get fixed-length paths), and has automagic debuginfod support via [1]. [1]: https://github.com/symphorien/nixseparatedebuginfod

And since this is Tweag, it only makes sense to mention https://github.com/symphorien/nixseparatedebuginfod