liquidwar: fix build (#47064)

- add missing dependencies readline and libtool that used to be
  propagated by guile but aren't anymore
- build with guile 2.0 instead of 1.8

pkgs/games/liquidwar/default.nix

@@ -2,7 +2,7 @@
 , gmp, libGLU_combined, libjpeg, libpng
 , expat, gettext, perl, guile
 , SDL, SDL_image, SDL_mixer, SDL_ttf
-, curl, sqlite
+, curl, sqlite, libtool, readline
 , libogg, libvorbis, libcaca, csound, cunit } :
 
 stdenv.mkDerivation rec {
@@ -22,6 +22,7 @@ stdenv.mkDerivation rec {
     curl sqlite
     libogg libvorbis csound
     libXrender libcaca cunit
+    libtool readline
   ];
 
   hardeningDisable = [ "format" ];

pkgs/top-level/all-packages.nix

@@ -20030,7 +20030,7 @@ with pkgs;
   };
 
   liquidwar = callPackage ../games/liquidwar {
-    guile = guile_1_8;
+    guile = guile_2_0;
   };
 
   liquidwar5 = callPackage ../games/liquidwar/5.nix {