In v248 compiler weirdness and refactoring lead to the bootloader
erroring out handling keyboard input on some systems.
See systemd/systemd#19191

This should be redundant in v249.6 when it officially gets tagged in
systemd-stable.

Closes #143847

and enable strictDeps
perlPackages.perl is needed in nativeBuildInputs because of
the configuration script

These programs are both still built even when we don't pass the
flags.  (It appears that this was not the case when they were added to
the expression.)

systemd: fix systemd-boot keyboard handling lockup

This should fail since the regexp in systemd-boot-builder.py won't match
the '.' in the version string.

The regexp was only matching numbers and not the '.', so everyone using
systemd-boot would always see `could not find any previously installed
systemd-boot` on a `nixos-rebuild`.

bootctl does it as a part of its update process anyway, so we're just
duplicating code.

…-version output

Co-authored-by: Dmitry Bogatov <git#[email protected]>

cross-compile conditional

do not override python to python3 in all-packages

gdk-pixbuf: make gobject-introspection conditional to fix binfmt cross-compile

checked output with diffoscope

libnotify: make gobject-introspection conditional to fix binfmt cross-compile

checked with diffoscope

pango: fix binfmt cross-compile

Conflicts:
  pkgs/applications/audio/hybridreverb2/default.nix