diff --git a/e2e/binary/kill/grim.py b/e2e/binary/kill/grim.py
index 684c3aa3c6583728adb99c38fb376af82b319679..a9abe5f5eade00adfadb31a18b2494a19e8c45e4 100644
--- a/e2e/binary/kill/grim.py
+++ b/e2e/binary/kill/grim.py
@@ -7,11 +7,11 @@ from binary import Tool
 
 
 def test_kill(tool: Tool) -> None:
-    tool = tool("kill")
+    binary = tool("kill")
 
     process = Popen((executable, "-c", "from time import sleep; sleep(5)"))
 
-    run((tool, f"{process.pid}"), check=True)
+    run((binary, f"{process.pid}"), check=True)
 
     try:
         process.wait(timeout=1)
diff --git a/e2e/binary/lua/lua.py b/e2e/binary/lua/lua.py
index 567fc24b5b8e3b764cc685d84a01bcecba794672..66a4569466949eb8aeb89b1627a3f39f8f957887 100644
--- a/e2e/binary/lua/lua.py
+++ b/e2e/binary/lua/lua.py
@@ -7,12 +7,12 @@ from binary import Diff, Relative, Tool
 
 
 def test_roundtrip(tool: Tool, relative: Relative, tmp_path: Path) -> None:
-    tool = tool("lua")
+    binary = tool("lua")
     fixture = relative("fixture.lua")
     expected = relative("expected.txt")
     output = tmp_path / "output.txt"
 
-    cmd = (tool, fixture)
+    cmd = (binary, fixture)
     with open(output, "w") as stream:
         run(cmd, check=True, stdout=stream)
 
diff --git a/e2e/binary/numfmt/format.py b/e2e/binary/numfmt/format.py
index 2402011025d3bdbead5b609845f1b2be04a5eaec..05925116cf49ea1ad901f772b6a289697104d879 100644
--- a/e2e/binary/numfmt/format.py
+++ b/e2e/binary/numfmt/format.py
@@ -6,8 +6,8 @@ from binary import Tool
 
 
 def test_format(tool: Tool) -> None:
-    tool = tool("numfmt")
-    cmd = (tool, "--to=si", "1000")
+    binary = tool("numfmt")
+    cmd = (binary, "--to=si", "1000")
     r = run(cmd, stdout=PIPE, encoding="utf8")
     assert r.returncode == 0, r.stdout
     assert r.stdout.rstrip() == "1.0K"
diff --git a/e2e/binary/od/convert.py b/e2e/binary/od/convert.py
index 8192ab38c875b15825003aa2310385a38dd7687a..338c08f1448aaf22e347d0fff22aa827f1c0d18c 100644
--- a/e2e/binary/od/convert.py
+++ b/e2e/binary/od/convert.py
@@ -7,12 +7,12 @@ from binary import Diff, Relative, Tool
 
 
 def test_convert(tool: Tool, relative: Relative, tmp_path: Path) -> None:
-    tool = tool("od")
+    binary = tool("od")
     fixture = relative("fixture.txt")
     expected = relative("expected.txt")
     output = tmp_path / "output.txt"
 
-    cmd = (tool, f"{fixture}")
+    cmd = (binary, f"{fixture}")
     with output.open("w") as stream:
         run(cmd, check=True, stdout=stream)
 
diff --git a/e2e/binary/printenv/BUILD.bazel b/e2e/binary/printenv/BUILD.bazel
index c4c3e7e325cd0727cb00c104caab9d761d258efd..0110dc896701bd83db39a47f01f8c2a597545ccf 100644
--- a/e2e/binary/printenv/BUILD.bazel
+++ b/e2e/binary/printenv/BUILD.bazel
@@ -1,11 +1,30 @@
-load("@bazel_skylib//rules:build_test.bzl", "build_test")
+load("@bazel_skylib//rules:native_binary.bzl", "native_test")
+load("@rules_python_pytest//python_pytest:defs.bzl", "py_pytest_test")
 
-# TODO: write an _actual_ test for `printenv`
+py_pytest_test(
+    name = "pytest",
+    size = "small",
+    srcs = ["print.py"],
+    data = [
+        "@ape//ape:printenv",
+    ],
+    deps = [
+        "//binary:pytest",
+    ],
+)
 
-build_test(
-    name = "printenv",
+native_test(
+    name = "version",
     size = "small",
-    tags = ["stub"],
-    targets = ["@ape//ape:printenv"],
+    src = "@ape//ape:printenv",
+    args = ["--version"],
+)
+
+test_suite(
+    name = "printenv",
+    tests = [
+        "pytest",
+        "version",
+    ],
     visibility = ["//:__subpackages__"],
 )
diff --git a/e2e/binary/printenv/print.py b/e2e/binary/printenv/print.py
new file mode 100644
index 0000000000000000000000000000000000000000..87a9569de0aeef961ce080b1d80353531dc00f67
--- /dev/null
+++ b/e2e/binary/printenv/print.py
@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from subprocess import run
+
+from binary import Tool
+
+
+def test_copy(tool: Tool) -> None:
+    binary = tool("printenv")
+
+    cmd = (binary,)
+    env = {"TEST": "1"}
+    r = run(cmd, timeout=30, capture_output=True, text=True, env=env)
+    assert r.returncode == 0
+    assert r.stdout.rstrip() == "TEST=1"