Add packages/fennel.nix

packages/fennel.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, luajit, my, ... }:
+
+let name = "fennel";
+    version = "0.8.1";
+in stdenv.mkDerivation {
+  inherit name version;
+
+  src = fetchTarball {
+    url = "https://fennel-lang.org/downloads/${name}-${version}.tar.gz";
+    sha256 = "0hzxnsgq4yqsvzkndplcllvq3j8cw45npqyrqa2ww8jv5abr183i";
+  };
+
+  buildInputs = [
+    luajit
+  ];
+
+  phases = "installPhase";
+  installPhase = ''
+    mkdir -p $out/bin
+    cp $src/fennel $out/bin/fennel
+    chmod +x $out/bin/fennel
+    sed -i 's%^#!/usr/bin/env lua$%#!${luajit}/bin/lua%' $out/bin/fennel
+  '';
+
+  meta = {
+    homepage = "https://github.com/bakpakin/Fennel";
+    description = "Lua Lisp Language";
+    license = lib.licenses.mit;
+    platforms = [ "x86_64-linux" ];
+    maintainers = [];
+  };
+}