add himalaya Vim plugin (#124512)

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>

pkgs/misc/vim-plugins/overrides.nix

@@ -21,6 +21,7 @@
 , direnv
 , fzf
 , gnome
+, himalaya
 , khard
 , languagetool
 , llvmPackages
@@ -286,6 +287,21 @@ self: super: {
     };
   });
 
+  himalaya-vim = buildVimPluginFrom2Nix {
+    pname = "himalaya-vim";
+    inherit (himalaya) src version;
+    configurePhase = "cd vim/";
+    dependencies = with self; [ himalaya ];
+    preFixup = ''
+      substituteInPlace $out/share/vim-plugins/himalaya-vim/plugin/himalaya.vim \
+        --replace 'if !executable("himalaya")' 'if v:false'
+    '';
+    postFixup = ''
+      mkdir -p $out/bin
+      ln -s ${himalaya}/bin/himalaya $out/bin/himalaya
+    '';
+  };
+
   LanguageClient-neovim =
     let
       version = "0.1.161";