znc: add configure options (#48683)

* znc: add option to disable IPv6

* znc: add option to enable debugging

* znc: add option to enable zlib support

* zncModules: match znc build inputs

znc-buildmod expects modules to be aware of the same libs znc itself is linked to.
Before this: znc-buildmod was passing -lz but zlib was not in the include path

pkgs/applications/networking/znc/default.nix

@@ -4,6 +4,9 @@
 , withTcl ? false, tcl
 , withCyrus ? true, cyrus_sasl
 , withUnicode ? true, icu
+, withZlib ? true, zlib
+, withIPv6 ? true
+, withDebug ? false
 }:
 
 with stdenv.lib;
@@ -24,7 +27,8 @@ stdenv.mkDerivation rec {
     ++ optional withPython python3
     ++ optional withTcl tcl
     ++ optional withCyrus cyrus_sasl
-    ++ optional withUnicode icu;
+    ++ optional withUnicode icu
+    ++ optional withZlib zlib;
 
   configureFlags = [
     (stdenv.lib.enableFeature withPerl "perl")
@@ -32,7 +36,8 @@ stdenv.mkDerivation rec {
     (stdenv.lib.enableFeature withTcl "tcl")
     (stdenv.lib.withFeatureAs withTcl "tcl" "${tcl}/lib")
     (stdenv.lib.enableFeature withCyrus "cyrus")
-  ];
+  ] ++ optional (!withIPv6) [ "--disable-ipv6" ]
+    ++ optional withDebug [ "--enable-debug" ];
 
   meta = with stdenv.lib; {
     description = "Advanced IRC bouncer";

pkgs/applications/networking/znc/modules.nix

@@ -9,6 +9,8 @@ let
     inherit buildPhase;
     inherit installPhase;
 
+    buildInputs = znc.buildInputs;
+
     meta = a.meta // { platforms = stdenv.lib.platforms.unix; };
     passthru.module_name = module_name;
   });