From 1eab48ef8e4484f2957a122b984b0291b113976b Mon Sep 17 00:00:00 2001
From: Vishal Punjabi <10079537+vshalpnjabi@users.noreply.github.com>
Date: Thu, 29 Oct 2026 03:30:57 +0000
Subject: [PATCH] Pass --python sys.executable to the uv download fallback

uv pip install without --python cannot find an unactivated uv venv
and exits 2. Target the running interpreter, as the pip branch does.

Fixes #14055
---
 spacy/cli/download.py   |  2 +-
 spacy/tests/test_cli.py | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/spacy/cli/download.py b/spacy/cli/download.py
index 4690343af5..479bfd6b9d 100644
--- a/spacy/cli/download.py
+++ b/spacy/cli/download.py
@@ -193,7 +193,7 @@ def _get_pip_install_cmd() -> list:
     if importlib.util.find_spec("pip") is not None:
         return [sys.executable, "-m", "pip", "install"]
     elif shutil.which("uv"):
-        return ["uv", "pip", "install"]
+        return ["uv", "pip", "install", "--python", sys.executable]
     else:
         msg.fail(
             "No package installer found",
diff --git a/spacy/tests/test_cli.py b/spacy/tests/test_cli.py
index 4bac40f0b8..6cd3622b4b 100644
--- a/spacy/tests/test_cli.py
+++ b/spacy/tests/test_cli.py
@@ -1,5 +1,6 @@
 import math
 import os
+import sys
 from collections import Counter
 from pathlib import Path
 from typing import Any, Dict, List, Tuple
@@ -1237,3 +1238,20 @@ def test_download_rejects_relative_urls(monkeypatch):
     download_module.download("en_core_web_sm-3.7.1", direct=True)
     with pytest.raises(SystemExit):
         download_module.download("../en_core_web_sm-3.7.1", direct=True)
+
+
+@pytest.mark.issue(14055)
+def test_get_pip_install_cmd_uv_uses_python_flag(monkeypatch):
+    """uv fallback must target the running interpreter in unactivated uv venvs."""
+    monkeypatch.setattr(
+        download_module.importlib.util,
+        "find_spec",
+        lambda name: None if name == "pip" else True,
+    )
+    monkeypatch.setattr(
+        download_module.shutil,
+        "which",
+        lambda name: "/usr/bin/uv" if name == "uv" else None,
+    )
+    cmd = download_module._get_pip_install_cmd()
+    assert cmd == ["uv", "pip", "install", "--python", sys.executable]