diff --git a/pkgs/development/compilers/polyml/default.nix b/pkgs/by-name/po/polyml/package.nix
similarity index 100%
rename from pkgs/development/compilers/polyml/default.nix
rename to pkgs/by-name/po/polyml/package.nix
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 9e35e34846e9..84580978cf86 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4849,8 +4849,6 @@ with pkgs;
   php85Extensions = recurseIntoAttrs php85.extensions;
   php85Packages = recurseIntoAttrs php85.packages;
 
-  polyml = callPackage ../development/compilers/polyml { };
-
   # Python interpreters. All standard library modules are included except for tkinter, which is
   # available as `pythonPackages.tkinter` and can be used as any other Python package.
   # When switching these sets, please update docs at ../../doc/languages-frameworks/python.md