Florian Klink fe446f8bb4 nixos/udev: allow /bin/sh in udev rules ...

Using `/bin/sh` in udev rules is fine (as it's guaranteed to point to a
(bash) shell on NixOS), and actually is better than hardcoding absolute
paths, at least in cases where these rules are also added to the
(systemd-based) initrd (via boot.initrd.services.udev.rules).

To allow this, we need to update the check routine that assembles the
list of files needing fixup, to explicitly exclude `/bin/sh` occurences.

To do this, we convert the pattern to a PCRE regex (which requires "/"
to be escaped), and add `(?!/bin/sh\b)` as a negative lookahead.

This subsequently allows udev rules to (start using) `/bin/sh` again, so
they'll work in-initrd.

2023-12-14 19:14:13 +02:00

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