Fix matplotlib minimal version corresponding to Ubuntu 24.04 (#25)

Author: daskol

mpl_typst/backend.py

@@ -11,6 +11,7 @@
 from tempfile import TemporaryDirectory
 from typing import IO, Any, Literal, Optional, Self, Type
 
+import matplotlib as mpl
 import numpy as np
 from matplotlib import get_cachedir
 from matplotlib.backend_bases import (
@@ -22,10 +23,20 @@
 from matplotlib.path import Path
 from matplotlib.text import Text
 from matplotlib.transforms import Affine2DBase, Transform
-from matplotlib.typing import ColorType
 from numpy.typing import ArrayLike
 from PIL import Image, ImageOps
 
+# Module `matplotlib.typing` has been introduced in matplotlib@3.8 but the
+# latest Ubuntu LTS 24.04 provides matplotlib@3.6. Since we are not ready to
+# abandont typing hints and support of the most popular distros is desirable,
+# we keep this version check until Ubuntu LTS 26.04.
+#
+# https://github.com/daskol/mpl-typst/issues/24
+if mpl.__version_info__ >= (3, 8):
+    from matplotlib.typing import ColorType
+else:
+    ColorType = Any
+
 from mpl_typst.config import Config, compiler
 from mpl_typst.typst import (
     Array, Block, Call, Content, Dictionary, Scalar, Writer as TypstWriter)

pyproject.toml

@@ -33,7 +33,14 @@ classifiers = [
     "Topic :: Utilities",
     "Typing :: Typed",
 ]
-dependencies = ["matplotlib", "numpy"]
+dependencies = [
+    "matplotlib>=3.8",
+    "numpy>=1.21",
+    "numpy>=1.21.2; python_version>='3.10'",
+    "numpy>=1.23.3; python_version>='3.11'",
+    "numpy>=1.26.0; python_version>='3.12'",
+    "numpy>=2.1.0; python_version>='3.13'",
+]
 requires-python = ">=3.11,<4"
 
 [project.optional-dependencies]