From 7603691b5cc3114fe784221ed4ad96fc5648f637 Mon Sep 17 00:00:00 2001
From: fmbearmf <77757734+fmbearmf@users.noreply.github.com>
Date: Tue, 2 Sep 2025 04:58:24 -0700
Subject: [PATCH] poetry: pin virtualenv to 20.30.0

---
 pkgs/by-name/po/poetry/package.nix   | 12 ++++++++++++
 pkgs/by-name/po/poetry/unwrapped.nix |  1 -
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/pkgs/by-name/po/poetry/package.nix b/pkgs/by-name/po/poetry/package.nix
index b96a4cce5b14..e5ce69dbc168 100644
--- a/pkgs/by-name/po/poetry/package.nix
+++ b/pkgs/by-name/po/poetry/package.nix
@@ -11,6 +11,18 @@ let
     {
       poetry = self.callPackage ./unwrapped.nix { };
 
+      # Poetry 2.1.4 officially requires virtualenv >=20.26.6, <20.33.0
+      # otherwise will be incompatible with python312
+      # see: https://github.com/python-poetry/poetry/issues/10490
+      virtualenv = super.virtualenv.overridePythonAttrs (old: rec {
+        version = "20.30.0";
+        src = fetchPypi {
+          inherit (old) pname;
+          inherit version;
+          hash = "sha256-gAhjFivKpUUKbk1yEElzDn8trgdyDgkCsOQEC9b5rag=";
+        };
+      });
+
       # The versions of Poetry and poetry-core need to match exactly,
       # and poetry-core in nixpkgs requires a staging cycle to be updated,
       # so apply an override here.
diff --git a/pkgs/by-name/po/poetry/unwrapped.nix b/pkgs/by-name/po/poetry/unwrapped.nix
index f9ef63ee0313..9a1486765cce 100644
--- a/pkgs/by-name/po/poetry/unwrapped.nix
+++ b/pkgs/by-name/po/poetry/unwrapped.nix
@@ -60,7 +60,6 @@ buildPythonPackage rec {
   pythonRelaxDeps = [
     "dulwich"
     "keyring"
-    "virtualenv"
   ];
 
   dependencies = [