diff --git a/.github/workflows/subscript.yml b/.github/workflows/subscript.yml
index d8297a6f8..a7323440e 100644
--- a/.github/workflows/subscript.yml
+++ b/.github/workflows/subscript.yml
@@ -66,7 +66,7 @@ jobs:
 
       - name: Lint with black
         if: ${{ always() }}
-        run: black --check *.py src tests
+        run: black --check src tests
 
       - name: Lint with flake8
         if: ${{ always() }}
@@ -78,11 +78,7 @@ jobs:
 
       - name: Run tests
         if: ${{ always() }}
-        run: |
-          pytest -n auto tests
-          # Check that repository is untainted by test code:
-          git status --porcelain
-          test -z "$(git status --porcelain)"
+        run: pytest -n auto tests
 
       - name: Syntax check documentation
         if: ${{ always() }}
diff --git a/pyproject.toml b/pyproject.toml
index bb7e60a8a..eef52a957 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -125,6 +125,16 @@ CsvStack = "subscript.csv_stack.csv_stack"
 FmuObs = "subscript.fmuobs.fmuobs"
 Params2Csv = "subscript.params2csv.params2csv"
 
+[tool.setuptools]
+script-files = [
+    "src/subscript/legacy/duf",
+    "src/subscript/legacy/eclmanual",
+    "src/subscript/legacy/ertwatch",
+    "src/subscript/legacy/list_rms_usage",
+    "src/subscript/legacy/nosim",
+    "src/subscript/legacy/runeclipse",
+]
+
 [tool.black]
 line-length = 88
 
diff --git a/setup.py b/setup.py
deleted file mode 100755
index 67bac20b3..000000000
--- a/setup.py
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/env python3
-
-from setuptools import setup
-
-LEGACY_SCRIPTS = [
-    "duf",
-    "eclmanual",
-    "ertwatch",
-    "list_rms_usage",
-    "nosim",
-    "runeclipse",
-]
-# pyproject.toml deprecates this scripts functionality entirely for
-# entry_points (which is simply called "scripts" within it)
-setup(scripts=[f"src/subscript/legacy/{script}" for script in LEGACY_SCRIPTS])