diff --git a/pkgs/write-fennel/default.nix b/pkgs/write-fennel/default.nix
index 64b16bc..25be271 100644
--- a/pkgs/write-fennel/default.nix
+++ b/pkgs/write-fennel/default.nix
@@ -31,6 +31,7 @@ stdenv.mkDerivation {
      echo "#!${lua}/bin/lua ${luaFlags}"
      echo "package.path = ${lib.strings.escapeShellArg (concatStringsSep "" luapath)} .. package.path"
      echo "package.cpath = ${lib.strings.escapeShellArg (concatStringsSep "" luacpath)} .. package.cpath"
+     echo "local ok, stdlib = pcall(require,'posix.stdlib'); if ok then stdlib.setenv('PATH',${lib.escapeShellArg (lib.makeBinPath packages)} .. \":\" .. os.getenv('PATH')) end"
      echo "local ok, ll = pcall(require,'lualinux'); if ok then ll.setenv('PATH',${lib.escapeShellArg (lib.makeBinPath packages)} .. \":\" .. os.getenv('PATH')) end"
      fennel ${if macropath != "" then "--add-macro-path ${lib.strings.escapeShellArg macropath}" else ""}  ${if correlate then "--correlate" else ""} --compile ${source} 
     ) >  ${name}.lua