diff --git a/nixos/modules/system/boot/networkd.nix b/nixos/modules/system/boot/networkd.nix
index 21ee33a691a0..0221374ab835 100644
--- a/nixos/modules/system/boot/networkd.nix
+++ b/nixos/modules/system/boot/networkd.nix
@@ -2,6 +2,7 @@
 
 with lib;
 with import ./systemd-unit-options.nix { inherit config lib; };
+with import ./systemd-lib.nix { inherit config lib pkgs; };
 
 let
 
@@ -632,6 +633,9 @@ in
       // mapAttrs' (n: v: nameValuePair "${n}.netdev" (netdevToUnit n v)) cfg.netdevs
       // mapAttrs' (n: v: nameValuePair "${n}.network" (networkToUnit n v)) cfg.networks;
 
+    environment.etc."systemd/network".source =
+      generateUnits "network" cfg.units [] [];
+
     users.extraUsers.systemd-network.uid = config.ids.uids.systemd-network;
     users.extraGroups.systemd-network.gid = config.ids.gids.systemd-network;
 
diff --git a/nixos/modules/system/boot/systemd-lib.nix b/nixos/modules/system/boot/systemd-lib.nix
new file mode 100644
index 000000000000..e8cfd3395cb0
--- /dev/null
+++ b/nixos/modules/system/boot/systemd-lib.nix
@@ -0,0 +1,118 @@
+{ config, lib, pkgs }:
+
+with lib;
+
+let cfg = config.systemd; in
+
+rec {
+
+  shellEscape = s: (replaceChars [ "\\" ] [ "\\\\" ] s);
+
+  makeUnit = name: unit:
+    let
+      pathSafeName = lib.replaceChars ["@" ":" "\\"] ["-" "-" "-"] name;
+    in
+    if unit.enable then
+      pkgs.runCommand "unit-${pathSafeName}" { preferLocalBuild = true; inherit (unit) text; }
+        ''
+          mkdir -p $out
+          echo -n "$text" > $out/${shellEscape name}
+        ''
+    else
+      pkgs.runCommand "unit-${pathSafeName}-disabled" { preferLocalBuild = true; }
+        ''
+          mkdir -p $out
+          ln -s /dev/null $out/${shellEscape name}
+        '';
+
+  generateUnits = type: units: upstreamUnits: upstreamWants:
+    pkgs.runCommand "${type}-units" { preferLocalBuild = true; } ''
+      mkdir -p $out
+
+      # Copy the upstream systemd units we're interested in.
+      for i in ${toString upstreamUnits}; do
+        fn=${cfg.package}/example/systemd/${type}/$i
+        if ! [ -e $fn ]; then echo "missing $fn"; false; fi
+        if [ -L $fn ]; then
+          target="$(readlink "$fn")"
+          if [ ''${target:0:3} = ../ ]; then
+            ln -s "$(readlink -f "$fn")" $out/
+          else
+            cp -pd $fn $out/
+          fi
+        else
+          ln -s $fn $out/
+        fi
+      done
+
+      # Copy .wants links, but only those that point to units that
+      # we're interested in.
+      for i in ${toString upstreamWants}; do
+        fn=${cfg.package}/example/systemd/${type}/$i
+        if ! [ -e $fn ]; then echo "missing $fn"; false; fi
+        x=$out/$(basename $fn)
+        mkdir $x
+        for i in $fn/*; do
+          y=$x/$(basename $i)
+          cp -pd $i $y
+          if ! [ -e $y ]; then rm $y; fi
+        done
+      done
+
+      # Symlink all units provided listed in systemd.packages.
+      for i in ${toString cfg.packages}; do
+        for fn in $i/etc/systemd/${type}/* $i/lib/systemd/${type}/*; do
+          if ! [[ "$fn" =~ .wants$ ]]; then
+            ln -s $fn $out/
+          fi
+        done
+      done
+
+      # Symlink all units defined by systemd.units. If these are also
+      # provided by systemd or systemd.packages, then add them as
+      # <unit-name>.d/overrides.conf, which makes them extend the
+      # upstream unit.
+      for i in ${toString (mapAttrsToList (n: v: v.unit) units)}; do
+        fn=$(basename $i/*)
+        if [ -e $out/$fn ]; then
+          if [ "$(readlink -f $i/$fn)" = /dev/null ]; then
+            ln -sfn /dev/null $out/$fn
+          else
+            mkdir $out/$fn.d
+            ln -s $i/$fn $out/$fn.d/overrides.conf
+          fi
+       else
+          ln -fs $i/$fn $out/
+        fi
+      done
+
+      # Created .wants and .requires symlinks from the wantedBy and
+      # requiredBy options.
+      ${concatStrings (mapAttrsToList (name: unit:
+          concatMapStrings (name2: ''
+            mkdir -p $out/'${name2}.wants'
+            ln -sfn '../${name}' $out/'${name2}.wants'/
+          '') unit.wantedBy) units)}
+
+      ${concatStrings (mapAttrsToList (name: unit:
+          concatMapStrings (name2: ''
+            mkdir -p $out/'${name2}.requires'
+            ln -sfn '../${name}' $out/'${name2}.requires'/
+          '') unit.requiredBy) units)}
+
+      ${optionalString (type == "system") ''
+        # Stupid misc. symlinks.
+        ln -s ${cfg.defaultUnit} $out/default.target
+
+        ln -s rescue.target $out/kbrequest.target
+
+        mkdir -p $out/getty.target.wants/
+        ln -s ../autovt@tty1.service $out/getty.target.wants/
+
+        ln -s ../local-fs.target ../remote-fs.target ../network.target \
+        ../nss-lookup.target ../nss-user-lookup.target ../swap.target \
+        $out/multi-user.target.wants/
+      ''}
+    ''; # */
+
+}
diff --git a/nixos/modules/system/boot/systemd.nix b/nixos/modules/system/boot/systemd.nix
index 12de5c9b16fb..78aac7fe96f1 100644
--- a/nixos/modules/system/boot/systemd.nix
+++ b/nixos/modules/system/boot/systemd.nix
@@ -3,6 +3,7 @@
 with utils;
 with lib;
 with import ./systemd-unit-options.nix { inherit config lib; };
+with import ./systemd-lib.nix { inherit config lib pkgs; };
 
 let
 
@@ -10,24 +11,6 @@ let
 
   systemd = cfg.package;
 
-
-  makeUnit = name: unit:
-    let
-      pathSafeName = lib.replaceChars ["@" ":" "\\"] ["-" "-" "-"] name;
-    in
-    if unit.enable then
-      pkgs.runCommand "unit-${pathSafeName}" { preferLocalBuild = true; inherit (unit) text; }
-        ''
-          mkdir -p $out
-          echo -n "$text" > $out/${shellEscape name}
-        ''
-    else
-      pkgs.runCommand "unit-${pathSafeName}-disabled" { preferLocalBuild = true; }
-        ''
-          mkdir -p $out
-          ln -s /dev/null $out/${shellEscape name}
-        '';
-
   upstreamSystemUnits =
     [ # Targets.
       "basic.target"
@@ -190,8 +173,6 @@ let
       "timers.target"
     ];
 
-  shellEscape = s: (replaceChars [ "\\" ] [ "\\\\" ] s);
-
   makeJobScript = name: text:
     let x = pkgs.writeTextFile { name = "unit-script"; executable = true; destination = "/bin/${shellEscape name}"; inherit text; };
     in "${x}/bin/${shellEscape name}";
@@ -393,96 +374,6 @@ let
       ${attrsToSection def.matchConfig}
     '';
 
-  generateUnits = type: units: upstreamUnits: upstreamWants:
-    pkgs.runCommand "${type}-units" { preferLocalBuild = true; } ''
-      mkdir -p $out
-
-      # Copy the upstream systemd units we're interested in.
-      for i in ${toString upstreamUnits}; do
-        fn=${systemd}/example/systemd/${type}/$i
-        if ! [ -e $fn ]; then echo "missing $fn"; false; fi
-        if [ -L $fn ]; then
-          target="$(readlink "$fn")"
-          if [ ''${target:0:3} = ../ ]; then
-            ln -s "$(readlink -f "$fn")" $out/
-          else
-            cp -pd $fn $out/
-          fi
-        else
-          ln -s $fn $out/
-        fi
-      done
-
-      # Copy .wants links, but only those that point to units that
-      # we're interested in.
-      for i in ${toString upstreamWants}; do
-        fn=${systemd}/example/systemd/${type}/$i
-        if ! [ -e $fn ]; then echo "missing $fn"; false; fi
-        x=$out/$(basename $fn)
-        mkdir $x
-        for i in $fn/*; do
-          y=$x/$(basename $i)
-          cp -pd $i $y
-          if ! [ -e $y ]; then rm $y; fi
-        done
-      done
-
-      # Symlink all units provided listed in systemd.packages.
-      for i in ${toString cfg.packages}; do
-        for fn in $i/etc/systemd/${type}/* $i/lib/systemd/${type}/*; do
-          if ! [[ "$fn" =~ .wants$ ]]; then
-            ln -s $fn $out/
-          fi
-        done
-      done
-
-      # Symlink all units defined by systemd.units. If these are also
-      # provided by systemd or systemd.packages, then add them as
-      # <unit-name>.d/overrides.conf, which makes them extend the
-      # upstream unit.
-      for i in ${toString (mapAttrsToList (n: v: v.unit) units)}; do
-        fn=$(basename $i/*)
-        if [ -e $out/$fn ]; then
-          if [ "$(readlink -f $i/$fn)" = /dev/null ]; then
-            ln -sfn /dev/null $out/$fn
-          else
-            mkdir $out/$fn.d
-            ln -s $i/$fn $out/$fn.d/overrides.conf
-          fi
-       else
-          ln -fs $i/$fn $out/
-        fi
-      done
-
-      # Created .wants and .requires symlinks from the wantedBy and
-      # requiredBy options.
-      ${concatStrings (mapAttrsToList (name: unit:
-          concatMapStrings (name2: ''
-            mkdir -p $out/'${name2}.wants'
-            ln -sfn '../${name}' $out/'${name2}.wants'/
-          '') unit.wantedBy) units)}
-
-      ${concatStrings (mapAttrsToList (name: unit:
-          concatMapStrings (name2: ''
-            mkdir -p $out/'${name2}.requires'
-            ln -sfn '../${name}' $out/'${name2}.requires'/
-          '') unit.requiredBy) units)}
-
-      ${optionalString (type == "system") ''
-        # Stupid misc. symlinks.
-        ln -s ${cfg.defaultUnit} $out/default.target
-
-        ln -s rescue.target $out/kbrequest.target
-
-        mkdir -p $out/getty.target.wants/
-        ln -s ../autovt@tty1.service $out/getty.target.wants/
-
-        ln -s ../local-fs.target ../remote-fs.target ../network.target \
-        ../nss-lookup.target ../nss-user-lookup.target ../swap.target \
-        $out/multi-user.target.wants/
-      ''}
-    ''; # */
-
 in
 
 {
@@ -731,10 +622,6 @@ in
     environment.etc."systemd/system".source =
       generateUnits "system" cfg.units upstreamSystemUnits upstreamSystemWants;
 
-    # FIXME: move to networkd.nix.
-    environment.etc."systemd/network".source =
-      generateUnits "network" cfg.network.units [] [];
-
     environment.etc."systemd/user".source =
       generateUnits "user" cfg.user.units upstreamUserUnits [];