openvswitch: split out dev, lib and tools

Most non-essential tools were moved to $tools output. Only services
(vswitchd and ovsdb-server) as well as their respective clients (-ctl)
are left in the default output.

Some helper scripts (ovs-ctl, ovs-save, ovs-kmod-ctl) are left in the
main output since they are related to basic service startup and,
frankly, they also don't pull any additional dependencies (except bash).

This allows to drastically reduce the size of the closure since the
default `out` no longer pulls python.

Before: 224.6M
After: 85.2M
Signed-off-by: Ihar Hrachyshka <ihrachyshka@nvidia.com>

pkgs/by-name/op/openvswitch/package.nix

@@ -41,7 +41,10 @@ stdenv.mkDerivation rec {
 
   outputs = [
     "out"
+    "dev"
+    "lib"
     "man"
+    "tools"
   ];
 
   patches = [
@@ -100,10 +103,16 @@ stdenv.mkDerivation rec {
     installShellCompletion --bash utilities/ovs-appctl-bashcomp.bash
     installShellCompletion --bash utilities/ovs-vsctl-bashcomp.bash
 
-    wrapProgram $out/bin/ovs-l3ping \
+    mkdir -p $tools/{bin,share/openvswitch/scripts}
+    mv $out/share/openvswitch/bugtool-plugins $tools/share/openvswitch
+    mv $out/share/openvswitch/scripts/ovs-{bugtool*,check-dead-ifs,monitor-ipsec,vtep} $tools/share/openvswitch/scripts
+    mv $out/share/openvswitch/scripts/usdt $tools/share/openvswitch/scripts
+    mv $out/bin/ovs-{bugtool,dpctl-top,l3ping,parse-backtrace,pcap,tcpdump,tcpundump,test,vlan-test} $tools/bin
+
+    wrapProgram $tools/bin/ovs-l3ping \
       --prefix PYTHONPATH : $out/share/openvswitch/python
 
-    wrapProgram $out/bin/ovs-tcpdump \
+    wrapProgram $tools/bin/ovs-tcpdump \
       --prefix PATH : ${lib.makeBinPath [ tcpdump ]} \
       --prefix PYTHONPATH : $out/share/openvswitch/python
   '';