connman: cleanup build from the groundup

pkgs/tools/networking/connman/default.nix

···
 { stdenv
 , fetchurl
 , pkgconfig
-, openconnect
 , file
-  openvpn
-, vpnc
 , glib
+# always required runtime dependencies
 , dbus
-, iptables
+, libmnl
 , gnutls
-, polkit,
 , readline
-, pptp
-, ppp
+# Choices one has to decide
+, firewallType ? "iptables" # or "nftables"
+, iptables ? null
+, libnftnl ? null # for nftables
+, dnsType ? "internal" # or "systemd-resolved"
+# optional features which are turned *on* by default
+, enableOpenconnect ? true
+, openconnect ? null
+, enableOpenvpn ? true
+, openvpn ? null
+, enableVpnc ? true
+, vpnc ? true
+, enablePolkit ? true
+, polkit ? null
+, enablePptp ? true
+, pptp ? null
+, ppp ? null
+, enableLoopback ? true
+, enableEthernet ? true
+, enableWireguard ? true
+, enableGadget ? true
+, enableWifi ? true
+, enableBluetooth ? true
+, enableOfono ? true
+, enableDundee ? true
+, enablePacrunner ? true
+, enableNeard ? true
+, enableWispr ? true
+, enableTools ? true
+, enableStats ? true
+, enableClient ? true
+, enableDatafiles ? true
+# optional features which are turned *off* by default
+, enableNetworkManager ? false
+, networkmanager ? null
+, enableHh2serialGps ? false
+, enableL2tp ? false
+, enableIospm ? false
+, enableTist ? false
 }:
 
+assert stdenv.lib.asserts.assertOneOf "firewallType" firewallType [ "iptables" "nftables" ];
+assert stdenv.lib.asserts.assertOneOf "dnsType" dnsType [ "internal" "systemd-resolved" ];
+
 stdenv.mkDerivation rec {
   pname = "connman";
   version = "1.38";
···
   };
 
   buildInputs = [
-    openconnect
-    polkit
-    openvpn
-    vpnc
     glib
     dbus
     libmnl
-    iptables
     gnutls
     readline
-    pptp
-    ppp
   ];
 
   nativeBuildInputs = [
     pkgconfig
     file
-  ];
+  ]
+    ++ stdenv.lib.optionals (enableOpenvpn) [ openvpn ]
+    ++ stdenv.lib.optionals (enableOpenconnect) [ openconnect ]
+    ++ stdenv.lib.optionals (enableVpnc) [ vpnc ]
+    ++ stdenv.lib.optionals (enablePolkit) [ polkit ]
+    ++ stdenv.lib.optionals (enablePptp) [ pptp ppp ]
+    ++ stdenv.lib.optionals (firewallType == "iptables") [ iptables ]
+    ++ stdenv.lib.optionals (firewallType == "nftables") [ libnftnl ]
+  ;
 
+  # Fix file program not found
   preConfigure = ''
     sed -i "s/\/usr\/bin\/file/file/g" ./configure
   '';
 
   configureFlags = [
+    # directories flags
     "--sysconfdir=${placeholder "out"}/etc"
     "--localstatedir=/var"
     "--with-dbusconfdir=${placeholder "out"}/share"
     "--with-dbusdatadir=${placeholder "out"}/share"
+    "--with-tmpfilesdir=${placeholder "out"}/lib/tmpfiles.d"
+    "--with-systemdunitdir=${placeholder "out"}/lib/systemd/system"
+    "--with-dns-backend=${dnsType}"
+    "--with-firewall=${firewallType}"
+    # production build flags
     "--disable-maintainer-mode"
-    "--enable-openconnect=builtin"
-    "--with-openconnect=${openconnect}/sbin/openconnect"
-    "--enable-openvpn=builtin"
-    "--with-openvpn=${openvpn}/sbin/openvpn"
-    "--enable-vpnc=builtin"
-    "--with-vpnc=${vpnc}/sbin/vpnc"
     "--enable-session-policy-local=builtin"
-    "--enable-client"
-    "--enable-bluetooth"
-    "--enable-wifi"
-    "--enable-polkit"
+    # This is for building and running tests (probably enabled by default),
+    # --enable-tests installs the tests as well
     "--enable-tools"
-    "--enable-datafiles"
-    "--enable-pptp"
-    "--with-pptp=${pptp}/sbin/pptp"
-    "--enable-iwd"
-  ];
-  doCheck = true;
+  ]
+    ++ stdenv.lib.optionals (!enableLoopback) [ "--disable-loopback" ]
+    ++ stdenv.lib.optionals (!enableEthernet) [ "--disable-ethernet" ]
+    ++ stdenv.lib.optionals (!enableWireguard) [ "--disable-wireguard" ]
+    ++ stdenv.lib.optionals (!enableGadget) [ "--disable-gadget" ]
+    ++ stdenv.lib.optionals (!enableWifi) [ "--disable-wifi" ]
+    # We (almost) always turn on IWD support as it doesn't require any new dependencies
+    # and it's easier for the NixOS module to use only 1 connmand package when
+    # IWD is requested
+    ++ stdenv.lib.optionals (enableWifi) [ "--enable-iwd" ]
+    ++ stdenv.lib.optionals (!enableBluetooth) [ "--disable-bluetooth" ]
+    ++ stdenv.lib.optionals (!enableOfono) [ "--disable-ofono" ]
+    ++ stdenv.lib.optionals (!enableDundee) [ "--disable-dundee" ]
+    ++ stdenv.lib.optionals (!enablePacrunner) [ "--disable-pacrunner" ]
+    ++ stdenv.lib.optionals (!enableNeard) [ "--disable-neard" ]
+    ++ stdenv.lib.optionals (!enableWispr) [ "--disable-wispr" ]
+    ++ stdenv.lib.optionals (!enableTools) [ "--disable-tools" ]
+    ++ stdenv.lib.optionals (!enableStats) [ "--disable-stats" ]
+    ++ stdenv.lib.optionals (!enableClient) [ "--disable-client" ]
+    ++ stdenv.lib.optionals (!enableDatafiles) [ "--disable-datafiles" ]
+    ++ stdenv.lib.optionals (enableOpenconnect) [
+      "--enable-openconnect=builtin"
+      "--with-openconnect=${openconnect}/sbin/openconnect"
+    ]
+    ++ stdenv.lib.optionals (enableOpenvpn) [
+      "--enable-openvpn=builtin"
+      "--with-openvpn=${openvpn}/sbin/openvpn"
+    ]
+    ++ stdenv.lib.optionals (enableVpnc) [
+      "--enable-vpnc=builtin"
+      "--with-vpnc=${vpnc}/sbin/vpnc"
+    ]
+    ++ stdenv.lib.optionals (enablePolkit) [
+      "--enable-polkit"
+    ]
+    ++ stdenv.lib.optionals (enablePptp) [
+      "--enable-pptp"
+      "--with-pptp=${pptp}/sbin/pptp"
+    ]
+    ++ stdenv.lib.optionals (!enableWireguard) [
+      "--disable-wireguard"
+    ]
+    ++ stdenv.lib.optionals (enableNetworkManager) [
+      "--enable-nmcompat"
+    ]
+    ++ stdenv.lib.optionals (enableHh2serialGps) [
+      "--enable-hh2serial-gps"
+    ]
+    ++ stdenv.lib.optionals (enableL2tp) [
+      "--enable-l2tp"
+    ]
+    ++ stdenv.lib.optionals (enableIospm) [
+      "--enable-iospm"
+    ]
+    ++ stdenv.lib.optionals (enableTist) [
+      "--enable-tist"
+    ]
+  ;
 
-  outputs = [ "out" "dev" ];
+  doCheck = true;
 
   meta = with stdenv.lib; {
     description = "A daemon for managing internet connections";