systemd: build with cryptsetup and cryptsetup-generators

There's a circular dependency to systemd via cryptsetup and lvm2
(systemd -> cryptsetup -> lvm2 -> udev=systemd).

However, cryptsetup only really needs the devmapper component shipped
with lvm2. So build `pkgs.cryptsetup` with a lvm2 that doesn't come with
udev.

nixos/modules/system/boot/systemd.nix

@@ -25,7 +25,7 @@ let
       "nss-lookup.target"
       "nss-user-lookup.target"
       "time-sync.target"
-      #"cryptsetup.target"
+      "cryptsetup.target"
       "sigpwr.target"
       "timers.target"
       "paths.target"

pkgs/os-specific/linux/systemd/default.nix

@@ -9,6 +9,7 @@
 , patchelf
 , substituteAll
 , getent
+, cryptsetup, lvm2
 , buildPackages
 , perl
 , withSelinux ? false, libselinux
@@ -30,6 +31,7 @@ let gnupg-minimal = gnupg.override {
   zlib = null;
   bzip2 = null;
 };
+
 in stdenv.mkDerivation {
   version = "245.6";
   pname = "systemd";
@@ -89,7 +91,7 @@ in stdenv.mkDerivation {
     ];
   buildInputs =
     [ linuxHeaders libcap curl.dev kmod xz pam acl
-      /* cryptsetup */ libuuid glib libgcrypt libgpgerror libidn2
+      cryptsetup libuuid glib libgcrypt libgpgerror libidn2
       pcre2 ] ++
       stdenv.lib.optional withKexectools kexectools ++
       stdenv.lib.optional withLibseccomp libseccomp ++

pkgs/top-level/all-packages.nix

@@ -16931,7 +16931,11 @@ in
 
   criu = callPackage ../os-specific/linux/criu { };
 
-  cryptsetup = callPackage ../os-specific/linux/cryptsetup { };
+  cryptsetup = callPackage ../os-specific/linux/cryptsetup {
+    # cryptsetup only really needs the devmapper component of cryptsetup
+    # but itself is used as a library in systemd (=udev)
+    lvm2 = lvm2.override { udev = null; };
+  };
 
   cramfsswap = callPackage ../os-specific/linux/cramfsswap { };