Separate dependencies to address PEP508 error

pyproject.toml

@@ -5,15 +5,10 @@ description = "This is a package to provide some common utilities for Django pro
 readme = "README.md"
 authors = [{name = "Sym Roe"}, {name = "Virginia Dooley"}]
 dependencies = [
-	"django>=3.2,<4.3",
 	"black", 
 	"curlylint",
 	"isort",
-	"ipdb",
-	"django-pipeline==2.1.0",
-	"markdown",
-	"django-localflavor==3.1",
-	"setuptools==65.5.1",
+	"ipdb",	
 	"pre-commit",
 	"djhtml",
 	"pytest",
@@ -22,12 +17,20 @@ dependencies = [
 	"pytest-flakes",
 	"pytest-ruff",
 	"pytidylib",
-	"dc-design-system @ https://github.com/DemocracyClub/design-system/archive/0.4.6.zip#sha1=3fedf363770c5fda9c9b883b97b5ecae44be2793",	
 	"whitenoise",
 	"pysass",
 	"jsmin<3.1",
 ]
 
+install-requires = [
+	"django>=3.2,<4.3",
+	"django-pipeline==2.1.0",
+	"markdown",
+	"django-localflavor==3.1",
+	"setuptools==65.5.1",
+	"dc-design-system @ https://github.com/DemocracyClub/design-system/archive/0.4.6.zip#sha1=3fedf363770c5fda9c9b883b97b5ecae44be2793",	
+]
+
 [project.urls]
 Homepage = "https://github.com/DemocracyClub/dc_django_utils"
 Changelog = "https://github.com/DemocracyClub/dc_django_utils/releases"