chore: target Python 3.12

README.md

@@ -32,8 +32,10 @@ uv sync --extra ml
 
 For Perlmutter or other HPC systems, follow the site-specific PyTorch/DGL
 installation guidance for the loaded CUDA module rather than encoding a CUDA
-wheel URL in this project. Training and inference workflows are not yet
-implemented.
+wheel URL in this project. In particular, the currently resolved PyPI DGL
+2.2.1 distribution has no Linux wheel, so the `ml` extra is not currently
+installable on this Linux host without a site-provided or source-built DGL.
+Training and inference workflows are not yet implemented.
 
 See [`docs/migration.md`](docs/migration.md) for migration rules and
 [`docs/architecture.md`](docs/architecture.md) for the target design.

pyproject.toml

@@ -7,7 +7,7 @@ name = "gnn4colliders"
 version = "0.1.0"
 description = "Graph neural network tools for collider event analysis."
 readme = "README.md"
-requires-python = ">=3.11"
+requires-python = ">=3.12"
 dependencies = [
     "awkward>=2.0",
     "hydra-core>=1.3",
@@ -38,7 +38,7 @@ addopts = "-ra"
 
 [tool.ruff]
 line-length = 88
-target-version = "py311"
+target-version = "py312"
 src = ["src"]
 exclude = ["legacy"]