udev: complete rework

- systemd puts all into one output now (except for man),
  because I wasn't able to fix all systemd/udev refernces
  for NixOS to work well
- libudev is now by default *copied* into another path,
  which is what most packages will use as build input :-)
- pkgs.udev = [ libudev.out libudev.dev ]; because there are too many
  references that just put `udev` into build inputs (to rewrite them all),
  also this made "${udev}/foo" fail at *evaluation* time
  so it's easier to catch and change to something more specific

nixos/modules/services/hardware/udev.nix

@@ -58,13 +58,13 @@ let
           --replace \"/bin/mount \"${pkgs.utillinux}/bin/mount
       done
 
-      echo -n "Checking that all programs called by relative paths in udev rules exist in ${pkgs.udev.out}/lib/udev... "
+      echo -n "Checking that all programs called by relative paths in udev rules exist in ${udev}/lib/udev... "
       import_progs=$(grep 'IMPORT{program}="[^/$]' $out/* |
         sed -e 's/.*IMPORT{program}="\([^ "]*\)[ "].*/\1/' | uniq)
       run_progs=$(grep -v '^[[:space:]]*#' $out/* | grep 'RUN+="[^/$]' |
         sed -e 's/.*RUN+="\([^ "]*\)[ "].*/\1/' | uniq)
       for i in $import_progs $run_progs; do
-        if [[ ! -x ${pkgs.udev.out}/lib/udev/$i && ! $i =~ socket:.* ]]; then
+        if [[ ! -x ${udev}/lib/udev/$i && ! $i =~ socket:.* ]]; then
           echo "FAIL"
           echo "$i is called in udev rules but not installed by udev"
           exit 1

nixos/modules/system/boot/stage-1.nix

@@ -60,9 +60,9 @@ let
       copy_bin_and_libs ${pkgs.mdadm}/sbin/mdadm
 
       # Copy udev.
-      copy_bin_and_libs ${udev.out}/lib/systemd/systemd-udevd
+      copy_bin_and_libs ${udev}/lib/systemd/systemd-udevd
-      copy_bin_and_libs ${udev.out}/bin/udevadm
+      copy_bin_and_libs ${udev}/bin/udevadm
-      for BIN in ${udev.libudev}/lib/udev/*_id; do
+      for BIN in ${udev}/lib/udev/*_id; do
         copy_bin_and_libs $BIN
       done
 
@@ -146,9 +146,9 @@ let
 
       echo 'ENV{LD_LIBRARY_PATH}="${extraUtils}/lib"' > $out/00-env.rules
 
-      cp -v ${udev.out}/lib/udev/rules.d/60-cdrom_id.rules $out/
+      cp -v ${udev}/lib/udev/rules.d/60-cdrom_id.rules $out/
-      cp -v ${udev.out}/lib/udev/rules.d/60-persistent-storage.rules $out/
+      cp -v ${udev}/lib/udev/rules.d/60-persistent-storage.rules $out/
-      cp -v ${udev.out}/lib/udev/rules.d/80-drivers.rules $out/
+      cp -v ${udev}/lib/udev/rules.d/80-drivers.rules $out/
       cp -v ${pkgs.lvm2}/lib/udev/rules.d/*.rules $out/
       ${config.boot.initrd.extraUdevRulesCommands}
 

pkgs/applications/editors/lighttable/default.nix

@@ -1,6 +1,6 @@
 { stdenv, fetchurl, buildEnv, makeDesktopItem, makeWrapper, zlib, glib, alsaLib
 , dbus, gtk, atk, pango, freetype, fontconfig, libgnome_keyring3, gdk_pixbuf
-, cairo, cups, expat, libgpgerror, nspr, gnome3, nss, xorg, udev
+, cairo, cups, expat, libgpgerror, nspr, gnome3, nss, xorg, libudev
 }:
 
 let
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
       --set-rpath ${libPath}:${stdenv.cc.cc}/lib${stdenv.lib.optionalString stdenv.is64bit "64"} \
       $out/LightTable/ltbin
 
-    ln -sf ${udev.libudev}/lib/libudev.so.1 $out/LightTable/libudev.so.0
+    ln -sf ${libudev.out}/lib/libudev.so.1 $out/LightTable/libudev.so.0
 
     makeWrapper $out/LightTable/ltbin $out/bin/lighttable \
       --prefix "LD_LIBRARY_PATH" : $out/LightTable

pkgs/applications/networking/browsers/chromium/common.nix

@@ -8,7 +8,7 @@
 , libusb1, libexif, pciutils
 
 , python, pythonPackages, perl, pkgconfig
-, nspr, udev, kerberos
+, nspr, libudev, kerberos
 , utillinux, alsaLib
 , bison, gperf
 , glib, gtk, dbus_glib
@@ -107,7 +107,7 @@ let
     buildInputs = defaultDependencies ++ [
       which
       python perl pkgconfig
-      nspr udev
+      nspr libudev
       (if useOpenSSL then openssl else nss)
       utillinux alsaLib
       bison gperf kerberos
@@ -135,7 +135,7 @@ let
         s|= [^;]*|= base::FilePath().AppendASCII("${libexif}/lib/libexif.so")|
       }' chrome/utility/media_galleries/image_metadata_extractor.cc
 
-      sed -i -e '/lib_loader.*Load/s!"\(libudev\.so\)!"${udev.libudev}/lib/\1!' \
+      sed -i -e '/lib_loader.*Load/s!"\(libudev\.so\)!"${libudev.out}/lib/\1!' \
         device/udev_linux/udev?_loader.cc
 
       sed -i -e '/libpci_loader.*Load/s!"\(libpci\.so\)!"${pciutils}/lib/\1!' \

pkgs/development/libraries/libusb1/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, udev ? null, libobjc, IOKit }:
+{ stdenv, fetchurl, pkgconfig, libudev ? null, libobjc, IOKit }:
 
 stdenv.mkDerivation rec {
   name = "libusb-1.0.19";
@@ -12,13 +12,13 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ pkgconfig ];
   propagatedBuildInputs =
-    stdenv.lib.optional stdenv.isLinux udev ++
+    stdenv.lib.optional stdenv.isLinux libudev ++
     stdenv.lib.optionals stdenv.isDarwin [ libobjc IOKit ];
 
   NIX_LDFLAGS = stdenv.lib.optionalString stdenv.isLinux "-lgcc_s";
 
   preFixup = stdenv.lib.optionalString stdenv.isLinux ''
-    sed 's,-ludev,-L${udev}/lib -ludev,' -i $out/lib/libusb-1.0.la
+    sed 's,-ludev,-L${libudev.out}/lib -ludev,' -i $out/lib/libusb-1.0.la
   '';
 
   meta = {

pkgs/development/libraries/libvirt/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, pkgconfig, libxml2, gnutls, devicemapper, perl, python
-, iproute, iptables, readline, lvm2, utillinux, udev, libpciaccess, gettext
+, iproute, iptables, readline, lvm2, utillinux, systemd, libpciaccess, gettext
 , libtasn1, ebtables, libgcrypt, yajl, makeWrapper, pmutils, libcap_ng
 , dnsmasq, libnl, libpcap, libxslt, xhtml1
 , pythonPackages, perlPackages
@@ -19,12 +19,12 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     pkgconfig libxml2 gnutls devicemapper perl python readline lvm2
-    utillinux udev libpciaccess gettext libtasn1 libgcrypt yajl makeWrapper
+    utillinux systemd.udev.lib libpciaccess gettext libtasn1 libgcrypt yajl makeWrapper
     libcap_ng libnl libxslt xhtml1 perlPackages.XMLXPath
   ];
 
   preConfigure = ''
-    PATH=${iproute}/sbin:${iptables}/sbin:${ebtables}/sbin:${lvm2}/sbin:${udev.out}/sbin:${dnsmasq}/bin:$PATH
+    PATH=${iproute}/sbin:${iptables}/sbin:${ebtables}/sbin:${lvm2}/sbin:${systemd.udev.bin}/sbin:${dnsmasq}/bin:$PATH
     patchShebangs . # fixes /usr/bin/python references
   '';
 

pkgs/development/libraries/mesa/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, fetchpatch, pkgconfig, intltool, autoreconfHook, substituteAll
-, file, expat, libdrm, xorg, wayland, udev, llvmPackages, libffi, libomxil-bellagio
+, file, expat, libdrm, xorg, wayland, libudev, llvmPackages, libffi, libomxil-bellagio
 , libvdpau, libelf, libva
 , grsecEnabled
 , enableTextureFloats ? false # Texture floats are patented, see docs/patents.txt
@@ -48,7 +48,7 @@ stdenv.mkDerivation {
   ] ++ optional stdenv.isLinux
       (substituteAll {
         src = ./dlopen-absolute-paths.diff;
-        inherit (udev) libudev;
+        libudev = libudev.out;
       });
 
   postPatch = ''
@@ -107,7 +107,7 @@ stdenv.mkDerivation {
     glproto dri2proto dri3proto presentproto
     libX11 libXext libxcb libXt libXfixes libxshmfence
     libffi wayland libvdpau libelf libXvMC /* libomxil-bellagio libva */
-  ] ++ optional stdenv.isLinux udev;
+  ] ++ optional stdenv.isLinux libudev;
 
   enableParallelBuilding = true;
   doCheck = false;

pkgs/development/tools/node-webkit/nw11.nix

@@ -1,6 +1,6 @@
 { stdenv, fetchurl, buildEnv, makeWrapper
 , xorg, alsaLib, dbus, glib, gtk, atk, pango, freetype, fontconfig
-, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, udev, libcap
+, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, libudev, libcap
 , libnotify}:
 let
   bits = if stdenv.system == "x86_64-linux" then "x64"
@@ -35,7 +35,7 @@ in stdenv.mkDerivation rec {
     patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/node-webkit/nw
     patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/node-webkit/nwsnapshot
 
-    ln -s ${udev.libudev}/lib/libudev.so $out/share/node-webkit/libudev.so.0
+    ln -s ${libudev.out}/lib/libudev.so $out/share/node-webkit/libudev.so.0
 
     patchelf --set-rpath "${nwEnv}/lib:${nwEnv}/lib64:$out/share/node-webkit" $out/share/node-webkit/nw
     patchelf --set-rpath "${nwEnv}/lib:${nwEnv}/lib64:$out/share/node-webkit" $out/share/node-webkit/nwsnapshot

pkgs/development/tools/node-webkit/nw12.nix

@@ -1,6 +1,6 @@
 { stdenv, fetchurl, buildEnv, makeWrapper
 , xorg, alsaLib, dbus, glib, gtk, atk, pango, freetype, fontconfig
-, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, udev, libcap
+, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, libudev, libcap
 , libnotify}:
 let
   bits = if stdenv.system == "x86_64-linux" then "x64"
@@ -37,7 +37,7 @@ in stdenv.mkDerivation rec {
     patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/nwjs/nw
     patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/nwjs/nwjc
 
-    ln -s ${udev}/lib/libudev.so $out/share/nwjs/libudev.so.0
+    ln -s ${libudev.out}/lib/libudev.so $out/share/nwjs/libudev.so.0
 
     patchelf --set-rpath "${nwEnv}/lib:${nwEnv}/lib64:$out/share/nwjs" $out/share/nwjs/nw
     patchelf --set-rpath "${nwEnv}/lib:${nwEnv}/lib64:$out/share/nwjs" $out/share/nwjs/nwjc

pkgs/development/tools/node-webkit/nw9.nix

@@ -1,6 +1,6 @@
 { stdenv, fetchurl, buildEnv, makeWrapper
 , xorg, alsaLib, dbus, glib, gtk, atk, pango, freetype, fontconfig
-, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, udev}:
+, gdk_pixbuf, cairo, zlib, nss, nssTools, nspr, gconf, expat, libudev }:
 let
   bits = if stdenv.system == "x86_64-linux" then "x64"
          else "ia32";
@@ -33,7 +33,7 @@ in stdenv.mkDerivation rec {
     patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/node-webkit/nw
     patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" $out/share/node-webkit/nwsnapshot
 
-    ln -s ${udev.libudev}/lib/libudev.so $out/share/node-webkit/libudev.so.0
+    ln -s ${libudev.out}/lib/libudev.so $out/share/node-webkit/libudev.so.0
 
     patchelf --set-rpath "${nwEnv}/lib:${nwEnv}/lib64:$out/share/node-webkit" $out/share/node-webkit/nw
     patchelf --set-rpath "${nwEnv}/lib:${nwEnv}/lib64:$out/share/node-webkit" $out/share/node-webkit/nwsnapshot

pkgs/misc/drivers/foo2zjs/default.nix

@@ -1,5 +1,5 @@
 x@{builderDefsPackage
-  , foomatic_filters, bc, unzip, ghostscript, udev, vim
+  , foomatic_filters, bc, unzip, ghostscript, systemd, vim
   , ...}:
 builderDefsPackage
 (a :  
@@ -36,7 +36,7 @@ rec {
       ''PIXMAPS=$out/share/pixmaps''
       ''UDEVBIN=$out/bin''
       ''UDEVDIR=$out/etc/udev/rules.d''
-      ''UDEVD=${udev.out}/sbin/udevd''
+      ''UDEVD=${systemd.udev.bin}/sbin/udevd''
       ''LIBUDEVDIR=$out/lib/udev/rules.d''
       ''USBDIR=$out/etc/hotplug/usb''
       ''FOODB=$out/share/foomatic/db/source''

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

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, flex, udev, perl }:
+{ stdenv, fetchurl, flex, systemd, perl }:
 
 assert stdenv.isLinux;
 
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
 
   preConfigure =
     ''
-      export PATH=${udev.out}/sbin:$PATH
+      export PATH=${systemd.udev.bin}/sbin:$PATH
       substituteInPlace user/Makefile.in --replace /sbin/ $out/sbin/
       substituteInPlace user/legacy/Makefile.in \
         --replace /sbin/ $out/sbin/ \

pkgs/os-specific/linux/lvm2/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, udev, utillinux, coreutils, enable_dmeventd ? false }:
+{ stdenv, fetchurl, pkgconfig, systemd, libudev, utillinux, coreutils, enable_dmeventd ? false }:
 
 let
   version = "2.02.132";
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   ] ++ stdenv.lib.optional enable_dmeventd " --enable-dmeventd";
 
   nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ udev ];
+  buildInputs = [ libudev ];
 
   preConfigure =
     ''
@@ -30,7 +30,7 @@ stdenv.mkDerivation {
         --replace /usr/bin/tr ${coreutils}/bin/tr
       substituteInPlace scripts/lvm2_activation_generator_systemd_red_hat.c \
         --replace /usr/sbin/lvm $out/sbin/lvm \
-        --replace /usr/bin/udevadm ${udev.out}/bin/udevadm
+        --replace /usr/bin/udevadm ${systemd.udev.bin}/bin/udevadm
 
       sed -i /DEFAULT_SYS_DIR/d Makefile.in
       sed -i /DEFAULT_PROFILE_DIR/d conf/Makefile.in

pkgs/os-specific/linux/multipath-tools/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, lvm2, libaio, gzip, readline, udev }:
+{ stdenv, fetchurl, lvm2, libaio, gzip, readline, systemd }:
 
 stdenv.mkDerivation rec {
   name = "multipath-tools-0.4.9";
@@ -22,8 +22,8 @@ stdenv.mkDerivation rec {
       substituteInPlace kpartx/kpartx.rules --replace /sbin/kpartx $out/sbin/kpartx
       substituteInPlace kpartx/kpartx_id --replace /sbin/dmsetup ${lvm2}/sbin/dmsetup
 
-      substituteInPlace libmultipath/defaults.h --replace /lib/udev/scsi_id ${udev.libudev}/lib/udev/scsi_id
+      substituteInPlace libmultipath/defaults.h --replace /lib/udev/scsi_id ${systemd.udev.lib}/lib/udev/scsi_id
-      substituteInPlace libmultipath/hwtable.c --replace /lib/udev/scsi_id ${udev.libudev}/lib/udev/scsi_id
+      substituteInPlace libmultipath/hwtable.c --replace /lib/udev/scsi_id ${systemd.udev.lib}/lib/udev/scsi_id
     '';
 
   meta = {

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

@@ -22,10 +22,15 @@ stdenv.mkDerivation rec {
     sha256 = "07sc1x43j60d5jnps0d7bfka10fihnpgkdrfrh9iskgmc9qangjb";
   };
 
+  patches = [ ./hwdb-location.diff ];
+
+  /* gave up for now!
   outputs = [ "out" "libudev" "doc" ]; # TODO: "dev"
   # note: there are many references to ${systemd}/...
   outputDev = "out";
   propagatedOutputs = "libudev";
+  */
+  outputs = [ "out" "man" ];
 
   buildInputs =
     [ linuxHeaders pkgconfig intltool gperf libcap kmod xz pam acl
@@ -88,24 +93,26 @@ stdenv.mkDerivation rec {
           --replace /sbin/fsck ${utillinux.bin}/sbin/fsck \
           --replace /bin/echo ${coreutils}/bin/echo \
           --replace /bin/cat ${coreutils}/bin/cat \
-          --replace /sbin/sulogin ${utillinux}/sbin/sulogin \
+          --replace /sbin/sulogin ${utillinux.bin}/sbin/sulogin \
           --replace /usr/lib/systemd/systemd-fsck $out/lib/systemd/systemd-fsck
       done
 
       substituteInPlace src/journal/catalog.c \
         --replace /usr/lib/systemd/catalog/ $out/lib/systemd/catalog/
 
-      export NIX_CFLAGS_LINK+=" -Wl,-rpath,$libudev/lib"
-
       configureFlagsArray+=("--with-ntp-servers=0.nixos.pool.ntp.org 1.nixos.pool.ntp.org 2.nixos.pool.ntp.org 3.nixos.pool.ntp.org")
+
+      #export NIX_CFLAGS_LINK+=" -Wl,-rpath,$libudev/lib"
     '';
 
+  /*
   makeFlags = [
     "udevlibexecdir=$(libudev)/lib/udev"
     # udev rules refer to $out, and anything but libs should probably go to $out
     "udevrulesdir=$(out)/lib/udev/rules.d"
     "udevhwdbdir=$(out)/lib/udev/hwdb.d"
   ];
+  */
 
 
   PYTHON_BINARY = "${coreutils}/bin/env python"; # don't want a build time dependency on Python
@@ -124,8 +131,6 @@ stdenv.mkDerivation rec {
       "-USYSTEMD_BINARY_PATH" "-DSYSTEMD_BINARY_PATH=\"/run/current-system/systemd/lib/systemd/systemd\""
     ];
 
-  enableParallelBuilding = true;
-
   installFlags =
     [ "localstatedir=$(TMPDIR)/var"
       "sysconfdir=$(out)/etc"
@@ -167,7 +172,8 @@ stdenv.mkDerivation rec {
 
       # "kernel-install" shouldn't be used on NixOS.
       find $out -name "*kernel-install*" -exec rm {} \;
-
+    ''; # */
+  /*
       # Move lib(g)udev to a separate output. TODO: maybe split them up
       #   to avoid libudev pulling glib
       mkdir -p "$libudev/lib"
@@ -179,8 +185,10 @@ stdenv.mkDerivation rec {
       for i in "$out"/lib/pkgconfig/{libudev,gudev-1.0}.pc; do
         substituteInPlace $i --replace "libdir=$out" "libdir=$libudev"
       done
-    ''; # */
+  */
 
+  enableParallelBuilding = true;
+  /*
   # some libs fail to link to liblzma and/or libffi
   postFixup = let extraLibs = stdenv.lib.makeLibraryPath [ xz.out libffi.out zlib.out ];
     in ''
@@ -188,6 +196,7 @@ stdenv.mkDerivation rec {
         patchelf --set-rpath `patchelf --print-rpath "$f"`':${extraLibs}' "$f"
       done
     '';
+  */
 
   # The interface version prevents NixOS from switching to an
   # incompatible systemd at runtime.  (Switching across reboots is
@@ -205,4 +214,3 @@ stdenv.mkDerivation rec {
   };
 }
 
-

pkgs/os-specific/linux/systemd/hwdb-location.diff

@@ -0,0 +1,19 @@
+diff --git a/src/libsystemd/sd-hwdb/sd-hwdb.c b/src/libsystemd/sd-hwdb/sd-hwdb.c
+index 06c9831..e74825c 100644
+--- a/src/libsystemd/sd-hwdb/sd-hwdb.c
++++ b/src/libsystemd/sd-hwdb/sd-hwdb.c
+@@ -268,13 +268,8 @@ static int trie_search_f(sd_hwdb *hwdb, const char *search) {
+ }
+ 
+ static const char hwdb_bin_paths[] =
+-        "/etc/systemd/hwdb/hwdb.bin\0"
+         "/etc/udev/hwdb.bin\0"
+-        "/usr/lib/systemd/hwdb/hwdb.bin\0"
+-#ifdef HAVE_SPLIT_USR
+-        "/lib/systemd/hwdb/hwdb.bin\0"
+-#endif
+-        UDEVLIBEXECDIR "/hwdb.bin\0";
++        ;
+ 
+ _public_ int sd_hwdb_new(sd_hwdb **ret) {
+         _cleanup_hwdb_unref_ sd_hwdb *hwdb = NULL;

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

@@ -0,0 +1,19 @@
+{ stdenv, systemd }:
+
+stdenv.mkDerivation {
+  name = "libudev-${systemd.version}";
+
+  unpackPhase = ":";
+  outputs = [ "dev" "out" ];
+  installPhase = ''
+    mkdir -p "$out/lib" "$dev/lib/pkgconfig" "$dev/include"
+    cp -P "${systemd}"/lib/libudev.* "$out/lib/"
+    cp -P "${systemd}"/lib/pkgconfig/libudev.pc "$dev/lib/pkgconfig/"
+    cp -P "${systemd}"/include/libudev.h "$dev/include/"
+
+    substituteInPlace "$dev"/lib/pkgconfig/*.pc \
+      --replace "${systemd}" "$out"
+    sed "/^includedir=/cincludedir=$dev/include" -i "$dev"/lib/pkgconfig/*.pc
+  '';
+}
+

pkgs/tools/filesystems/nixpart/0.4/blivet.nix

@@ -1,11 +1,11 @@
 { stdenv, fetchurl, buildPythonPackage, pykickstart, pyparted, pyblock
 , libselinux, cryptsetup, multipath_tools, lsof, utillinux
-, useNixUdev ? true, udev ? null
+, useNixUdev ? true, libudev ? null
 # This is only used when useNixUdev is false
 , udevSoMajor ? 1
 }:
 
-assert useNixUdev -> udev != null;
+assert useNixUdev -> libudev != null;
 
 buildPythonPackage rec {
   name = "blivet-${version}";
@@ -29,7 +29,7 @@ buildPythonPackage rec {
     sed -i '/pvscan/s/, *"--cache"//' blivet/devicelibs/lvm.py
   '' + (if useNixUdev then ''
     sed -i -e '/find_library/,/find_library/ {
-      c libudev = "${udev.libudev}/lib/libudev.so.1"
+      c libudev = "${libudev.out}/lib/libudev.so.1"
     }' blivet/pyudev.py
   '' else ''
     sed -i \
@@ -40,7 +40,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     pykickstart pyparted pyblock libselinux cryptsetup
-  ] ++ stdenv.lib.optional useNixUdev udev;
+  ] ++ stdenv.lib.optional useNixUdev libudev;
 
   # tests are currently _heavily_ broken upstream
   doCheck = false;

pkgs/tools/filesystems/nixpart/0.4/default.nix

@@ -10,7 +10,7 @@ let
     inherit stdenv fetchurl buildPythonPackage;
     inherit pykickstart pyparted pyblock cryptsetup multipath_tools;
     inherit useNixUdev udevSoMajor;
-    inherit (pkgs) lsof utillinux udev;
+    inherit (pkgs) lsof utillinux libudev;
     libselinux = pkgs.libselinux.override { enablePython = true; };
   };
 
@@ -27,12 +27,12 @@ let
 
   lvm2 = import ./lvm2.nix {
     inherit stdenv fetchurl;
-    inherit (pkgs) pkgconfig utillinux udev coreutils;
+    inherit (pkgs) pkgconfig utillinux libudev systemd coreutils;
   };
 
   multipath_tools = import ./multipath-tools.nix {
     inherit stdenv fetchurl lvm2;
-    inherit (pkgs) readline udev libaio gzip;
+    inherit (pkgs) readline systemd libaio gzip;
   };
 
   parted = import ./parted.nix {

pkgs/tools/filesystems/nixpart/0.4/lvm2.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, udev, utillinux, coreutils }:
+{ stdenv, fetchurl, pkgconfig, libudev, systemd, utillinux, coreutils }:
 
 let
   v = "2.02.106";
@@ -15,7 +15,7 @@ stdenv.mkDerivation {
   configureFlags =
     "--disable-readline --enable-udev_rules --enable-udev_sync --enable-pkgconfig --enable-applib";
 
-  buildInputs = [ pkgconfig udev ];
+  buildInputs = [ pkgconfig libudev ];
 
   preConfigure =
     ''
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
         --replace /usr/bin/tr ${coreutils}/bin/tr
       substituteInPlace scripts/lvm2_activation_generator_systemd_red_hat.c \
         --replace /usr/sbin/lvm $out/sbin/lvm \
-        --replace /usr/bin/udevadm ${udev.out}/bin/udevadm
+        --replace /usr/bin/udevadm ${systemd.udev.bin}/bin/udevadm
 
       sed -i /DEFAULT_SYS_DIR/d Makefile.in
       sed -i /DEFAULT_PROFILE_DIR/d conf/Makefile.in

pkgs/tools/filesystems/nixpart/0.4/multipath-tools.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, lvm2, libaio, gzip, readline, udev }:
+{ stdenv, fetchurl, lvm2, libaio, gzip, readline, systemd }:
 
 stdenv.mkDerivation rec {
   name = "multipath-tools-0.4.9";
@@ -22,8 +22,8 @@ stdenv.mkDerivation rec {
       substituteInPlace kpartx/kpartx.rules --replace /sbin/kpartx $out/sbin/kpartx
       substituteInPlace kpartx/kpartx_id --replace /sbin/dmsetup ${lvm2}/sbin/dmsetup
 
-      substituteInPlace libmultipath/defaults.h --replace /lib/udev/scsi_id ${udev.libudev}/lib/udev/scsi_id
+      substituteInPlace libmultipath/defaults.h --replace /lib/udev/scsi_id ${systemd.udev.lib}/lib/udev/scsi_id
-      substituteInPlace libmultipath/hwtable.c --replace /lib/udev/scsi_id ${udev.libudev}/lib/udev/scsi_id
+      substituteInPlace libmultipath/hwtable.c --replace /lib/udev/scsi_id ${systemd.udev.lib}/lib/udev/scsi_id
     '';
 
   meta = {

pkgs/top-level/all-packages.nix

@@ -10188,6 +10188,10 @@ let
 
   systemd = callPackage ../os-specific/linux/systemd {
     linuxHeaders = linuxHeaders_3_18;
+  }
+    // {
+      udev.bin = systemd;     # ${systemd.udev.bin}/bin/udevadm
+      udev.lib = libudev.out; # ${systemd.udev.lib}/lib/libudev.*
     };
 
   systemtap = callPackage ../development/tools/profiling/systemtap {
@@ -10271,8 +10275,11 @@ let
     cross = assert crossSystem != null; crossSystem;
   });
 
+  # This hacky alias covers most use cases without mass-replace (build inputs)
+  # and causes an *evaluation* error if "${udev}" is attempted.
+  udev = [ libudev.dev libudev.out ];
+  libudev = callPackage ../os-specific/linux/systemd/libudev.nix { };
 
-  udev = pkgs.systemd; # headers are not in the libudev output
   eudev = callPackage ../os-specific/linux/eudev {};
 
   udisks1 = callPackage ../os-specific/linux/udisks/1-default.nix { };

pkgs/top-level/python-packages.nix

@@ -11951,7 +11951,7 @@ let
 
     postPatch = ''
       sed -i -e '/udev_library_name/,/^ *libudev/ {
-        s|CDLL([^,]*|CDLL("${pkgs.udev.libudev}/lib/libudev.so.1"|p; d
+        s|CDLL([^,]*|CDLL("${pkgs.libudev.out}/lib/libudev.so.1"|p; d
       }' pyudev/_libudev.py
     '';