build: better communicate lack of support for Python 3.11

Makefile

@@ -32,7 +32,7 @@ autoformat:  ## Run the autoformatter.
 	@# ERA,T201
 	@-ruff --extend-ignore ANN,ARG001,C90,DTZ,D100,D101,D102,D103,D202,D203,D212,D415,E501,RET504,S101,UP006,UP007 --extend-select C,D400,I,W --unfixable T,ERA --fix-only .
 	@black .
-	@isort --atomic --profile black .
+	@isort --atomic --profile black --skip downloads/** .
 
 test:  ## Run the tests.
 	@pytest

imaginairy/__init__.py

@@ -3,6 +3,8 @@ import os
 # tells pytorch to allow MPS usage (for Mac M1 compatibility)
 os.putenv("PYTORCH_ENABLE_MPS_FALLBACK", "1")
 
+import sys  # noqa
+
 from .api import imagine, imagine_image_files  # noqa
 from .schema import (  # noqa
     ImaginePrompt,
@@ -10,3 +12,12 @@ from .schema import (  # noqa
     LazyLoadingImage,
     WeightedPrompt,
 )
+
+# if python version is 3.11 or higher, throw an exception
+if sys.version_info >= (3, 11):
+    msg = (
+        "Imaginairy is not compatible with Python 3.11 or higher. Please use Python 3.8 - 3.10.\n"
+        "This is due to torch 1.13 not supporting Python 3.11 and this library not having yet switched "
+        "to torch 2.0"
+    )
+    raise RuntimeError(msg)

setup.py

@@ -110,6 +110,9 @@ setup(
         "uvicorn>=0.16.0",
         "xformers>=0.0.16; sys_platform!='darwin' and platform_machine!='aarch64'",
     ],
-    # torchvision doesn't support python 3.11 unless we switch to torch 2.0
-    python_requires=">=3.8,<3.11",
+    # don't specify maximum python versions as it can cause very long dependency resolution issues as the resolver
+    # goes back to older versions of packages that didn't specify a maximum
+    # https://discuss.python.org/t/requires-python-upper-limits/12663/75
+    # https://github.com/brycedrennan/imaginAIry/pull/341#issuecomment-1574723908
+    python_requires=">=3.8",
 )