Fix hardcoded reliance on pip

src/hatch/cli/application.py

@@ -5,6 +5,8 @@
 from functools import cached_property
 from typing import TYPE_CHECKING, cast
 
+from uv import find_uv_bin
+
 from hatch.cli.terminal import Terminal
 from hatch.config.user import ConfigFile, RootConfig
 from hatch.project.core import Project
@@ -164,9 +166,10 @@ def ensure_plugin_dependencies(self, dependencies: list[Dependency], *, wait_mes
             if distributions.dependencies_in_sync(dependencies):
                 return
 
-            pip_command = [sys.executable, "-u", "-m", "pip"]
+            uv_bin = find_uv_bin()
+            pip_command = [uv_bin, "pip"]
 
-        pip_command.extend(["install", "--disable-pip-version-check"])
+        pip_command.extend(["install", "--disable-pip-version-check", "--python", sys.executable])
 
         # Default to -1 verbosity
         add_verbosity_flag(pip_command, self.verbosity, adjustment=-1)

tests/conftest.py

@@ -14,6 +14,7 @@
 from click.testing import CliRunner as __CliRunner
 from filelock import FileLock
 from platformdirs import user_cache_dir, user_data_dir
+from uv import find_uv_bin
 
 from hatch.config.constants import AppEnvVars, ConfigEnvVars, PublishEnvVars
 from hatch.config.user import ConfigFile
@@ -437,10 +438,18 @@ def mock_plugin_installation(mocker):
 
     def _mock(command, **kwargs):
         if isinstance(command, list):
+            if any(arg.startswith("hatchling") for arg in command):
+                return subprocess_run(command, **kwargs)
+
             if command[:5] == [sys.executable, "-u", "-m", "pip", "install"]:
                 mocked_subprocess_run(command, **kwargs)
                 return mocked_subprocess_run
 
+            uv_bin = find_uv_bin()
+            if command[:3] == [uv_bin, "pip", "install"]:
+                mocked_subprocess_run(command, **kwargs)
+                return mocked_subprocess_run
+
             if command[:3] == [sys.executable, "self", "python-path"]:
                 return mocker.MagicMock(returncode=0, stdout=sys.executable.encode())
 

tests/helpers/helpers.py

@@ -12,6 +12,7 @@
 from unittest.mock import call
 
 import tomli_w
+from uv import find_uv_bin
 
 from hatch.config.user import RootConfig
 from hatch.env.utils import add_verbosity_flag
@@ -48,13 +49,14 @@ def get_current_timestamp():
 
 
 def assert_plugin_installation(subprocess_run, dependencies: list[str], *, verbosity=0, count=1):
+    uv_bin = find_uv_bin()
     command = [
-        sys.executable,
-        "-u",
-        "-m",
+        uv_bin,
         "pip",
         "install",
         "--disable-pip-version-check",
+        "--python",
+        sys.executable,
     ]
     add_verbosity_flag(command, verbosity, adjustment=-1)
     command.extend(dependencies)