elvis: unbreak darwin

Co-Authored-By: Luke Granger-Brown <git@lukegb.com>

pkgs/by-name/el/elvis/package.nix

@@ -36,7 +36,10 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [ ncurses ];
 
-  configureFlags = [ "--ioctl=termios" ];
+  configureFlags = [
+    "--ioctl=termios"
+    "--libs=-lncurses"
+  ];
 
   strictDeps = false;
 
@@ -46,6 +49,11 @@ stdenv.mkDerivation (finalAttrs: {
       --replace-fail 'if [ -f /usr/include/sys/wait.h ]' 'if true'
   '';
 
+  postConfigure = ''
+    echo >>config.h '#undef NEED_MEMMOVE'
+    echo >>config.h '#define NEED_IOCTL_H'
+  '';
+
   installPhase = ''
     runHook preInstall