Drop Python 3.11 support

.github/workflows/ci.yaml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ["3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.12", "3.13", "3.14"]
         ambertools: [false, true]
         openeye: [false, true]
         mamba-executable: ["micromamba"]  # TODO: Add "mamba" back

.github/workflows/ci_pixi.yaml

@@ -23,17 +23,13 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest]
         environment: [
-          py311,
           py312,
           py313,
           py314,
-          py311-openeye,
           py312-openeye,
           py313-openeye,
-          py311-ambertools,
           py312-ambertools,
           py313-ambertools,
-          py311-openeye-ambertools,
           py312-openeye-ambertools,
           py313-openeye-ambertools,
           typing,

docs/README.md

@@ -3,13 +3,12 @@
 The docs for this project are built with [Sphinx](http://www.sphinx-doc.org/en/master/).
 To compile the docs, first ensure that Sphinx and the ReadTheDocs theme are installed.
 
-
 ```bash
 conda install sphinx sphinx_rtd_theme 
 ```
 
-
 Once installed, you can use the `Makefile` in this directory to compile static HTML pages by
+
 ```bash
 make html
 ```

docs/_static/README.md

@@ -6,11 +6,13 @@ They are copied after the builtin static files,
 so a file named "default.css" will overwrite the builtin "default.css".
 
 The path to this folder is set in the Sphinx `conf.py` file in the line: 
+
 ```python
 templates_path = ["_static"]
 ```
 
 ## Examples of file to add to this directory
+
 * Custom Cascading Style Sheets
 * Custom JavaScript code
 * Static logo images

docs/_templates/README.md

@@ -6,6 +6,7 @@ They are copied after the builtin template files,
 so a file named "page.html" will overwrite the builtin "page.html".
 
 The path to this folder is set in the Sphinx `conf.py` file in the line: 
+
 ```python
 html_static_path = ["_templates"]
 ```

pyproject.toml

@@ -12,10 +12,9 @@ readme = "README.md"
 license = "MIT"
 license-files = [ "LICENSE" ]
 authors = [ { name = "Open Force Field Initiative", email = "info@openforcefield.org" } ]
-requires-python = ">=3.11"
+requires-python = ">=3.12"
 classifiers = [
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
@@ -29,6 +28,7 @@ find = {}
 fallback_version = "0.0.0"
 
 [tool.ruff]
+target-version = "py312"
 line-length = 119
 namespace-packages = [ "openff/utilities/" ]
 
@@ -98,11 +98,10 @@ dependencies = { openeye-toolkits = "*" }
 ambertools = "*"
 numpy = "2.2.*"  # ParmEd bugs
 
-[tool.pixi.feature.dev.dependencies]
+[tool.pixi.feature.dev.pypi-dependencies]
 pre-commit = "*"
+ipdb = "*"
 
-[tool.pixi.feature.py311.dependencies]
-python = "3.11.*"
 [tool.pixi.feature.py312.dependencies]
 python = "3.12.*"
 [tool.pixi.feature.py313.dependencies]
@@ -111,17 +110,13 @@ python = "3.13.*"
 python = "3.14.*"
 
 [tool.pixi.environments]
-py311 = [ "py311", "test" ]
 py312 = [ "py312", "test" ]
 py313 = [ "py313", "test" ]
 py314 = [ "py314", "test" ]
-py311-openeye = [ "py311", "test", "openeye" ]
 py312-openeye = [ "py312", "test", "openeye" ]
 py313-openeye = [ "py313", "test", "openeye" ]
-py311-ambertools = [ "py311", "test", "ambertools" ]
 py312-ambertools = [ "py312", "test", "ambertools" ]
 py313-ambertools = [ "py313", "test", "ambertools" ]
-py311-openeye-ambertools = [ "py311", "test", "ambertools", "openeye" ]
 py312-openeye-ambertools = [ "py312", "test", "ambertools", "openeye" ]
 py313-openeye-ambertools = [ "py313", "test", "ambertools", "openeye" ]
 dev = [ "py313", "dev" ]