[aleksana@Aleksana-Laptop:~]$ bash --version
GNU bash, version 5.2.37(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

[aleksana@Aleksana-Laptop:~]$ re='\bx\b'; [[ "x" =~ $re ]] && echo "yes!" || echo "no!"
yes!

In reply to @aleksana:mozilla.org
Not our problem, it's difference in libc. Not sure why bash depends on libc regex function though

In reply to @emilazy:matrix.org
Nix regex behaves differently on libstdc++ and libc++

In reply to @aleksana:mozilla.org
I don't get it, why do they not link some standalone libraries

In reply to @connorbaker:matrix.org
Randy Eckenrode: would you happen to know if darwin uses an out-of-the-ordinary shell with respect to Nixpkgs builds? Put another way, do darwin systems use their host machine's bash, an old/vendored version of bash, or the same version linux machines would?
I ask because I'm making setup hooks which use some bash-isms, and I see comments littered throughout Nixpkgs about hacking around old versions of bash for darwin.

Darwin uses nixpkgs Bash (whether from the bootstrap tools or freshly built).

How old are those comments? Darwin may have used the system when it had a native (impure) toolchain, but that was a decade ago.

The only exception that comes to mind is a foopkg-config script from when patchShebangs wasn’t available, but I’m pretty sure I fixed that during the Clang 16 update.