diff --git a/.github/workflows/alpine-test.yml b/.github/workflows/alpine-test.yml
@@ -47,13 +47,12 @@ jobs:
        # and cause subsequent tests to fail
        cat test/fixtures/.gitconfig >> ~/.gitconfig

-    - name: Set up virtualenv
      run: |
        python -m venv .venv

    - name: Update PyPA packages
      run: |
-        # Get the latest pip, wheel, and prior to Python 3.12, setuptools.
        . .venv/bin/activate
        python -m pip install -U pip 'setuptools; python_version<"3.12"' wheel


diff --git a/.github/workflows/cygwin-test.yml b/.github/workflows/cygwin-test.yml
@@ -7,8 +7,6 @@ permissions:

jobs:
  test:
-    runs-on: windows-latest
-
    strategy:
      matrix:
        selection: [fast, perf]
@@ -20,6 +18,8 @@ jobs:

      fail-fast: false

    env:
      CHERE_INVOKING: "1"
      CYGWIN_NOWINPATH: "1"
@@ -32,7 +32,7 @@ jobs:
    - name: Force LF line endings
      run: |
        git config --global core.autocrlf false  # Affects the non-Cygwin git.
-      shell: bash  # Use Git Bash instead of Cygwin Bash for this step.

    - uses: actions/checkout@v4
      with:
@@ -41,7 +41,7 @@ jobs:
    - name: Install Cygwin
      uses: cygwin/cygwin-install-action@v5
      with:
-        packages: python39 python39-pip python39-virtualenv git wget
        add-to-path: false  # No need to change $PATH outside the Cygwin environment.

    - name: Arrange for verbose output
@@ -67,18 +67,13 @@ jobs:
        # and cause subsequent tests to fail
        cat test/fixtures/.gitconfig >> ~/.gitconfig

-    - name: Set up virtualenv
      run: |
-        python3.9 -m venv --without-pip .venv
        echo 'BASH_ENV=.venv/bin/activate' >>"$GITHUB_ENV"

-    - name: Bootstrap pip in virtualenv
-      run: |
-        wget -qO- https://bootstrap.pypa.io/get-pip.py | python
-
    - name: Update PyPA packages
      run: |
-        # Get the latest pip, wheel, and prior to Python 3.12, setuptools.
        python -m pip install -U pip 'setuptools; python_version<"3.12"' wheel

    - name: Install project and test dependencies

diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
@@ -71,7 +71,6 @@ jobs:

    - name: Update PyPA packages
      run: |
-        # Get the latest pip, wheel, and prior to Python 3.12, setuptools.
        python -m pip install -U pip 'setuptools; python_version<"3.12"' wheel

    - name: Install project and test dependencies

diff --git a/test/test_installation.py b/test/test_installation.py
@@ -4,19 +4,11 @@
import ast
import os
import subprocess
-import sys
-
-import pytest

from test.lib import TestBase, VirtualEnvironment, with_rw_directory


class TestInstallation(TestBase):
-    @pytest.mark.xfail(
-        sys.platform == "cygwin" and "CI" in os.environ,
-        reason="Trouble with pip on Cygwin CI, see issue #2004",
-        raises=subprocess.CalledProcessError,
-    )
    @with_rw_directory
    def test_installation(self, rw_dir):
        venv = self._set_up_venv(rw_dir)