Added support for Nix

Author: Phundrak

resources/nix.ascii

@@ -0,0 +1,12 @@
+{1}     `kdF`  `D@@j `O@Q-
+{1}      :qOe'   2@@DQ@@*
+{1}   /2yyPOKUf]}{{0}a@@@Q,   ;
+{1}  ;\\\\akEj|||?*{0};Q@@^ `jDo
+{0}      J@@D-      `H@@ {1}XHK:
+{0}kkkEE&@@{0}2           a$OOazz1;
+{0}999#@@@{0}Z>          ?9qjvvvzz;
+{0}  ^@@Q {0}Ek{`      `zk6*
+{0}  g@M- {1}:E9e{0};ujyy2UDDKoooo*
+{0}   \   {1}.eKKq{0}ZDDRR@@@QMMMo
+{1}      :UOXfHH/   ,Q@@>
+{1}     `PHj` \HDj`  `H@Q-

src/language.rs

@@ -41,6 +41,7 @@ pub enum Language {
     Lua,
     Markdown,
     Nim,
+    Nix,
     #[strum(serialize = "objective-c")]
     ObjectiveC,
     OCaml,
@@ -99,6 +100,7 @@ impl std::fmt::Display for Language {
             Language::Lua => write!(f, "Lua"),
             Language::Markdown => write!(f, "Markdown"),
             Language::Nim => write!(f, "Nim"),
+            Language::Nix => write!(f, "Nix"),
             Language::ObjectiveC => write!(f, "Objective-C"),
             Language::OCaml => write!(f, "OCaml"),
             Language::Org => write!(f, "Org"),
@@ -159,6 +161,7 @@ impl From<tokei::LanguageType> for Language {
             tokei::LanguageType::Lua => Language::Lua,
             tokei::LanguageType::Markdown => Language::Markdown,
             tokei::LanguageType::Nim => Language::Nim,
+            tokei::LanguageType::Nix => Language::Nix,
             tokei::LanguageType::ObjectiveC => Language::ObjectiveC,
             tokei::LanguageType::OCaml => Language::OCaml,
             tokei::LanguageType::Org => Language::Org,
@@ -218,6 +221,7 @@ impl Language {
             Language::Lua => include_str!("../resources/lua.ascii"),
             Language::Markdown => include_str!("../resources/markdown.ascii"),
             Language::Nim => include_str!("../resources/nim.ascii"),
+            Language::Nix => include_str!("../resources/nix.ascii"),
             Language::ObjectiveC => include_str!("../resources/objectivec.ascii"),
             Language::OCaml => include_str!("../resources/ocaml.ascii"),
             Language::Org => include_str!("../resources/org.ascii"),
@@ -249,7 +253,12 @@ impl Language {
             Language::Assembly => vec![Color::Cyan],
             Language::C => vec![Color::BrightBlue, Color::Blue],
             Language::Clojure => vec![Color::BrightBlue, Color::BrightGreen],
-            Language::CMake => vec![Color::Blue, Color::BrightGreen, Color::Red, Color::BrightBlack],
+            Language::CMake => vec![
+                Color::Blue,
+                Color::BrightGreen,
+                Color::Red,
+                Color::BrightBlack,
+            ],
             Language::CoffeeScript => vec![Color::Red],
             Language::Cpp => vec![Color::Yellow, Color::Cyan],
             Language::Csharp => vec![Color::White],
@@ -288,6 +297,7 @@ impl Language {
             Language::Lua => vec![Color::Blue],
             Language::Markdown => vec![Color::BrightWhite, Color::BrightRed],
             Language::Nim => vec![Color::Yellow, Color::BrightWhite],
+            Language::Nix => vec![Color::BrightBlue, Color::Blue],
             Language::ObjectiveC => vec![Color::BrightBlue, Color::Blue],
             Language::OCaml => vec![Color::Yellow],
             Language::Org => vec![Color::Green, Color::Red, Color::White],
@@ -400,6 +410,7 @@ fn get_all_language_types() -> Vec<tokei::LanguageType> {
         tokei::LanguageType::Lua,
         tokei::LanguageType::Markdown,
         tokei::LanguageType::Nim,
+        tokei::LanguageType::Nix,
         tokei::LanguageType::ObjectiveC,
         tokei::LanguageType::OCaml,
         tokei::LanguageType::Org,