Use Makefile to get around SAM issue

aws/aws-lambda-builders#675

lambda-layers/DependenciesLayer/Makefile

@@ -0,0 +1,5 @@
+
+build-DependenciesLayer:
+	pip install --break-system-packages setuptools
+	cd $(ARTIFACTS_DIR)
+	pip install --break-system-packages -r requirements.txt

pyproject.toml

@@ -5,7 +5,6 @@ description = " 📮 A Django port of the original PHP code from electionleaflet
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
-    "aws-sam-cli==1.131.0",
     "dc-design-system",
     "dc-django-utils",
     "dj-pagination==2.4.0",
@@ -29,6 +28,7 @@ dependencies = [
     "psycopg2-binary==2.9.10",
     "sorl-thumbnail===12.11.0",
     "setuptools>=75.6.0",
+    "aws-wsgi",
 ]
 
 [tool.uv.workspace]
@@ -38,7 +38,7 @@ members = ["thumbs"]
 django-uk-political-parties = { git = "https://github.com/DemocracyClub/django-uk-political-parties.git", rev = "86ffa51f8306858c379c9de5be2f4bdb24b3a910" }
 dc-design-system = { git = "https://github.com/DemocracyClub/design-system.git", rev = "c5c5de6b792b4b57997b65370fdcdfa4f099cdf4" }
 dc-django-utils = { git = "https://github.com/DemocracyClub/dc_django_utils.git", rev = "7.0.1" }
-aws-wsgi = { git = "https://github.com/DemocracyClub/awsgi.git", rev = "master" }
+aws-wsgi = { git = "https://github.com/DemocracyClub/awsgi.git" }
 
 [tool.pytest.ini_options]
 DJANGO_SETTINGS_MODULE = "electionleaflets.settings.testing"
@@ -59,6 +59,7 @@ lint.extend-select = [
 
 [dependency-groups]
 dev = [
+    "aws-sam-cli==1.131.0",
     "pytest==8.3.3",
     "pytest-cov==6.0.0",
     "pytest-django==4.9.0",

template.yaml

@@ -86,7 +86,7 @@ Resources:
       CompatibleRuntimes:
         - python3.12
     Metadata:
-      BuildMethod: python3.12
+      BuildMethod: makefile
 
 
   ElectionLeafletsFunction: