ibus: fix build and codepoint/emoji input

see #226526,
ibus/ibus#2496,
#218120 (comment)

codepoint and emoji input simply don't show due to runtime
initialization issues, and a missing make dependency makes the build flaky.

pkgs/tools/inputmethods/ibus/default.nix

@@ -1,6 +1,7 @@
 { lib, stdenv
 , substituteAll
 , fetchFromGitHub
+, fetchpatch
 , autoreconfHook
 , gettext
 , makeWrapper
@@ -72,6 +73,12 @@ stdenv.mkDerivation rec {
       pythonSitePackages = python3.sitePackages;
     })
     ./build-without-dbus-launch.patch
+    # unicode and emoji input are broken before 1.5.29
+    # https://github.com/NixOS/nixpkgs/issues/226526
+    (fetchpatch {
+      url = "https://github.com/ibus/ibus/commit/7c8abbe89403c2fcb08e3fda42049a97187e53ab.patch";
+      hash = "sha256-59HzAdLq8ahrF7K+tFGLjTodwIiTkJGEkFe8quqIkhU=";
+    })
   ];
 
   outputs = [ "out" "dev" "installedTests" ];
@@ -98,6 +105,12 @@ stdenv.mkDerivation rec {
     "--with-ucd-dir=${unicode-character-database}/share/unicode"
   ];
 
+  # missing make dependency
+  # https://github.com/NixOS/nixpkgs/pull/218120#issuecomment-1514027173
+  preBuild = ''
+    make -C src ibusenumtypes.h
+  '';
+
   makeFlags = [
     "test_execsdir=${placeholder "installedTests"}/libexec/installed-tests/ibus"
     "test_sourcesdir=${placeholder "installedTests"}/share/installed-tests/ibus"