diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/default.nix b/pkgs/development/tools/poetry2nix/poetry2nix/default.nix
index 22ab12149285..dae0a02b6175 100644
--- a/pkgs/development/tools/poetry2nix/poetry2nix/default.nix
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/default.nix
@@ -5,7 +5,7 @@
 }:
 let
   # Poetry2nix version
-  version = "1.20.0";
+  version = "1.21.0";
 
   inherit (poetryLib) isCompatible readTOML moduleName;
 
@@ -339,6 +339,9 @@ lib.makeScope pkgs.newScope (self: {
             ) { inherit app; };
           };
 
+          # Extract position from explicitly passed attrs so meta.position won't point to poetry2nix internals
+          pos = builtins.unsafeGetAttrPos (lib.elemAt (lib.attrNames attrs) 0) attrs;
+
           meta = lib.optionalAttrs (lib.hasAttr "description" pyProject.tool.poetry)
             {
               inherit (pyProject.tool.poetry) description;
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/overrides.nix b/pkgs/development/tools/poetry2nix/poetry2nix/overrides.nix
index daf536561f11..ab1a5324c98e 100644
--- a/pkgs/development/tools/poetry2nix/poetry2nix/overrides.nix
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/overrides.nix
@@ -156,6 +156,12 @@ self: super:
     }
   );
 
+  cheroot = super.cheroot.overridePythonAttrs (
+    old: {
+      dontPreferSetupPy = true;
+    }
+  );
+
   colour = super.colour.overridePythonAttrs (
     old: {
       buildInputs = (old.buildInputs or [ ]) ++ [ self.d2to1 ];
@@ -547,6 +553,7 @@ self: super:
         self.pytestrunner
         self.cryptography
         self.pyjwt
+        self.setuptools-scm-git-archive
       ];
     }
   );