unified: add module

an inline, unified diff viewer for neovim

plugins/by-name/unified/default.nix

@@ -0,0 +1,17 @@
+{ lib, ... }:
+lib.nixvim.plugins.mkNeovimPlugin {
+  name = "unified";
+  packPathName = "unified.nvim";
+  package = "unified-nvim";
+
+  maintainers = [ lib.maintainers.khaneliman ];
+
+  settingsExample = {
+    line_symbols = {
+      add = "";
+      delete = "󰊂";
+      change = "";
+    };
+    auto_refresh = false;
+  };
+}

tests/test-sources/plugins/by-name/unified/default.nix

@@ -0,0 +1,29 @@
+{
+  empty = {
+    plugins.unified.enable = true;
+  };
+
+  defaults = {
+    plugins.unified = {
+      enable = true;
+      settings = {
+        signs = {
+          add = "│";
+          delete = "│";
+          change = "│";
+        };
+        highlights = {
+          add = "DiffAdd";
+          delete = "DiffDelete";
+          change = "DiffChange";
+        };
+        line_symbols = {
+          add = "+";
+          delete = "-";
+          change = "~";
+        };
+        auto_refresh = true;
+      };
+    };
+  };
+}