These are all unconditianally anyways.

This was only used to patch a circular output reference from lib to out
on aarch64, but was removed in b68bddf,

This commit forgot to remove perl, so remove it now.

upstreams TODO mentions iptables-dev (libiptc) is also used for nspawn,
but it seems like it only makes use of this via networkd anyways (or
does these days) - at least systemdMinimal compiles successfully without
iptables in the build closure.

This makes curl optional if both remote and importd are disabled, and
makes some assertions more robust by switching from curl.dev != null to
lib.getDev curl != null.

use lib.getDev to retrieve the dev output. Don't pass it to buildInputs
if we don't build with withCryptsetup set to true.

This will build systemd without some compression utils, useful for
systemdMinimal.

This is already configurable above.

This was missed.

… and default it to false for systemdMinimal

This isn't used anywhere.

…d support

fsck.c doesn't refer to any of these binaries anymore, and the whole
systmed codebase not to /sbin/mke2fs.