diff --git a/markdownhighlighter.cpp b/markdownhighlighter.cpp
index 6b51e17..823148b 100644
--- a/markdownhighlighter.cpp
+++ b/markdownhighlighter.cpp
@@ -910,7 +910,7 @@ void MarkdownHighlighter::highlightSyntax(const QString &text) {
             break;
         case HighlighterState::CodeNix:
         case HighlighterState::CodeNix + tildeOffset:
-            loadJSData(types, keywords, builtin, literals, others);
+            loadNixData(types, keywords, builtin, literals, others);
             comment = QLatin1Char('#');
             break;
         default:
diff --git a/qownlanguagedata.cpp b/qownlanguagedata.cpp
index 73a720b..054d957 100644
--- a/qownlanguagedata.cpp
+++ b/qownlanguagedata.cpp
@@ -643,6 +643,87 @@ void loadJSData(QMultiHash<char, QLatin1String> &types,
     other = js_other;
 }
 
+/**********************************************************/
+/* Nix Data *********************************************/
+/**********************************************************/
+static bool NixDataInitialized = false;
+static QMultiHash<char, QLatin1String> nix_keywords;
+static QMultiHash<char, QLatin1String> nix_types;
+static QMultiHash<char, QLatin1String> nix_literals;
+static QMultiHash<char, QLatin1String> nix_builtin;
+static QMultiHash<char, QLatin1String> nix_other;
+void initNixData() {
+    nix_keywords = {{('i'), QLatin1String("in")},
+                    {('a'), QLatin1String("assert")},
+                    {('k'), QLatin1String("keywords")},
+                    {('r'), QLatin1String("rec")},
+                    {('a'), QLatin1String("and")},
+                    {('o'), QLatin1String("or")},
+                    {('o'), QLatin1String("of")},
+                    {('i'), QLatin1String("if")},
+                    {('f'), QLatin1String("for")},
+                    {('w'), QLatin1String("while")},
+                    {('d'), QLatin1String("do")},
+                    {('r'), QLatin1String("return")},
+                    {('e'), QLatin1String("else")},
+                    {('b'), QLatin1String("break")},
+                    {('w'), QLatin1String("with")},
+                    {('c'), QLatin1String("case")},
+                    {('c'), QLatin1String("continue")},
+                    {('d'), QLatin1String("delete")},
+                    {('l'), QLatin1String("let")},
+                    {('e'), QLatin1String("export")},
+                    {('a'), QLatin1String("as")},
+                    {('i'), QLatin1String("import")},
+                    {('f'), QLatin1String("from")},
+                    {('a'), QLatin1String("as")}};
+
+    nix_types = {};
+
+    nix_literals = {
+        {('f'), QLatin1String("false")}, {('n'), QLatin1String("null")},
+        {('t'), QLatin1String("true")},  {('u'), QLatin1String("undefined")},
+        {('N'), QLatin1String("NaN")},   {('I'), QLatin1String("Infinity")}};
+
+    nix_builtin = {{('a'), QLatin1String("abort")},
+           {('b'), QLatin1String("baseNameOf")},
+           {('d'), QLatin1String("derivation")},
+           {('d'), QLatin1String("dirOf")},
+           {('f'), QLatin1String("fetchTarball")},
+           {('f'), QLatin1String("fetchFromGitHub")},
+           {('i'), QLatin1String("import")},
+           {('i'), QLatin1String("isNull")},
+           {('m'), QLatin1String("map")},
+           {('r'), QLatin1String("removeAttrs")},
+           {('t'), QLatin1String("throw")},
+           {('t'), QLatin1String("toString")}};
+
+    nix_other = {
+        {('b'), QLatin1String("builtins")},
+        {('c'), QLatin1String("config")},
+        {('p'), QLatin1String("pkgs")},
+        {('i'), QLatin1String("inputs")},
+        {('x'), QLatin1String("xdg")},
+        {('e'), QLatin1String("environment")},
+    };
+}
+
+void loadNixData(QMultiHash<char, QLatin1String> &types,
+                 QMultiHash<char, QLatin1String> &keywords,
+                 QMultiHash<char, QLatin1String> &builtin,
+                 QMultiHash<char, QLatin1String> &literals,
+                 QMultiHash<char, QLatin1String> &other) {
+    if (!NixDataInitialized) {
+        initNixData();
+        NixDataInitialized = true;
+    }
+    types = nix_types;
+    keywords = nix_keywords;
+    builtin = nix_builtin;
+    literals = nix_literals;
+    other = nix_other;
+}
+
 /**********************************************************/
 /* PHP Data *********************************************/
 /**********************************************************/
diff --git a/qownlanguagedata.h b/qownlanguagedata.h
index 853b00d..891a4ec 100644
--- a/qownlanguagedata.h
+++ b/qownlanguagedata.h
@@ -72,6 +72,15 @@ void loadJSData(QMultiHash<char, QLatin1String> &types,
                 QMultiHash<char, QLatin1String> &literals,
                 QMultiHash<char, QLatin1String> &other);
 
+/**********************************************************/
+/* JS Data *********************************************/
+/**********************************************************/
+void loadNixData(QMultiHash<char, QLatin1String> &types,
+                QMultiHash<char, QLatin1String> &keywords,
+                QMultiHash<char, QLatin1String> &builtin,
+                QMultiHash<char, QLatin1String> &literals,
+                QMultiHash<char, QLatin1String> &other);
+
 /**********************************************************/
 /* PHP Data *********************************************/
 /**********************************************************/