feat: add Nix syntax highlighting support

unhappychoice · claude · unhappychoice · commit 025aeb69c639 · 2026-04-21T02:27:31.000+09:00
Closes #132 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -59,6 +59,7 @@ tree-sitter-json = "0.24"
 tree-sitter-kotlin-ng = "1.0"
 tree-sitter-lua = "0.5"
 tree-sitter-md = "0.5"
+tree-sitter-nix = "0.3"
 tree-sitter-php = "0.24"
 tree-sitter-python = "0.25"
 tree-sitter-ruby = "0.23"
diff --git a/README.md b/README.md
@@ -180,7 +180,7 @@ See the [Configuration Guide](docs/configuration.md) for full options and exampl
 
 ## Supported Languages
 
-Astro, Bash, C, C#, C++, Clojure, CSS, Dart, Elixir, Erlang, Go, Haskell, HTML, Java, JavaScript, JSON, Kotlin, Lua, Markdown, PHP, Python, Ruby, Rust, Scala, Svelte, Swift, TypeScript, XML, YAML, Zig
+Astro, Bash, C, C#, C++, Clojure, CSS, Dart, Elixir, Erlang, Go, Haskell, HTML, Java, JavaScript, JSON, Kotlin, Lua, Markdown, Nix, PHP, Python, Ruby, Rust, Scala, Svelte, Swift, TypeScript, XML, YAML, Zig
 
 ## Documentation
 
diff --git a/src/syntax/languages/mod.rs b/src/syntax/languages/mod.rs
@@ -17,6 +17,7 @@ pub mod json;
 pub mod kotlin;
 pub mod lua;
 pub mod markdown;
+pub mod nix;
 pub mod php;
 pub mod python;
 pub mod ruby;
@@ -146,6 +147,11 @@ fn by_name(raw: &str) -> Option<LanguageSupport> {
             highlight_query: markdown::HIGHLIGHT_QUERY,
             injection_query: Some(markdown::INJECTION_QUERY),
         }),
+        "nix" => Some(LanguageSupport {
+            language: nix::language(),
+            highlight_query: nix::HIGHLIGHT_QUERY,
+            injection_query: Some(nix::INJECTION_QUERY),
+        }),
         "php" => Some(LanguageSupport {
             language: php::language(),
             highlight_query: php::HIGHLIGHT_QUERY,
@@ -227,6 +233,7 @@ fn canonicalize(raw: &str) -> Option<&'static str> {
         "kt" | "kts" | "kotlin" => Some("kotlin"),
         "lua" => Some("lua"),
         "md" | "markdown" => Some("markdown"),
+        "nix" => Some("nix"),
         "php" | "php3" | "php4" | "php5" | "phtml" => Some("php"),
         "py" | "pyw" | "python" => Some("python"),
         "rb" | "rbw" | "rake" | "gemspec" | "ruby" => Some("ruby"),
diff --git a/src/syntax/languages/nix.rs b/src/syntax/languages/nix.rs
@@ -0,0 +1,7 @@
+pub fn language() -> tree_sitter::Language {
+    tree_sitter_nix::LANGUAGE.into()
+}
+
+pub const HIGHLIGHT_QUERY: &str = tree_sitter_nix::HIGHLIGHTS_QUERY;
+
+pub const INJECTION_QUERY: &str = tree_sitter_nix::INJECTIONS_QUERY;
