fix: add back python 3.7 support

pyproject.toml

@@ -21,11 +21,12 @@ dependencies = [
     "click>=8.0.4",
     "coloredlogs<=14.0",
     "dnspython>=2.1.0,<=2.3.0",
-    "eventlet>=0.33.0",
+    "eventlet>=0.33.0,!=0.36.0",
     "flask-cors>=3.0.9",
     "flask-restful>=0.3.9",
     "flask-talisman>=0.7.0",
-    "Flask==2.2.5",
+    "flask<2.3; python_version < '3.8'",
+    "flask; python_version >= '3.8'",
     "flask_socketio>=5.0.0",
     "networkx>=2.6",
     "numpy>=1.20.2,<2",
@@ -87,11 +88,13 @@ dependencies = [
   "playwright>=1.26.1",
   "jsonschema>=4.17.3",
   "pep440>=0.1.2",
-  "black>24.2",
+  "black>=23; python_version < '3.8'",
+  "black>24.2; python_version >= '3.8'",
   "flake8>=4.0.1",
   "gitlint-core==0.17.0",
   "isort>=5.10.1",
-  "mypy>=1.8.0",
+  "mypy>=1; python_version < '3.8'",
+  "mypy>=1.8.0; python_version >= '3.8'",
   "pre-commit>=2.6.0",
 ]
 
@@ -118,7 +121,7 @@ dependencies = [
 ]
 
 [[tool.hatch.envs.all.matrix]]
-python = ["3.8", "3.9", "3.10", "3.11", "3.12"]
+python = ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
 
 [tool.coverage.run]
 source_pkgs = ["g2p"]