From 240f59dc44dcb97c622c95504f2faeb35a802b37 Mon Sep 17 00:00:00 2001
From: John ZuHone <jzuhone@gmail.com>
Date: Wed, 6 Mar 2024 10:20:02 +0900
Subject: [PATCH] 4.4.0

---
 doc/source/changelog.rst |  3 ++-
 doc/source/conf.py       |  4 ++--
 doc/source/index.rst     |  2 +-
 pyproject.toml           | 13 +++++--------
 pyxsim/utils.py          |  8 ++++++++
 5 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/doc/source/changelog.rst b/doc/source/changelog.rst
index 14229558..be562a56 100644
--- a/doc/source/changelog.rst
+++ b/doc/source/changelog.rst
@@ -3,12 +3,13 @@
 ChangeLog
 =========
 
-Version 4.3.3
+Version 4.4.0
 -------------
 
 This version of pyXSIM contains a bugfix and updates compatibility with other
 packages.
 
+* Support for Python 3.8 has been dropped.
 * The minimum required version of yt has been bumped up to 4.3.0.
 * Cython 3.0 is now supported as a compile-time dependency for those building
   pyXSIM from source.
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 5be51b7c..aa6f91c1 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -80,9 +80,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = "4.3.3"
+version = "4.4.0"
 # The full version, including alpha/beta/rc tags.
-release = "4.3.3"
+release = "4.4.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 0ae902b1..69cfc89f 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -44,7 +44,7 @@ pyXSIM is released under a
 Current Version
 ---------------
 
-The current stable version is 4.3.3. See the :ref:`changelog` for details on
+The current stable version is 4.4.0. See the :ref:`changelog` for details on
 changes from previous versions.
 
 Table of Contents
diff --git a/pyproject.toml b/pyproject.toml
index 1249c8dc..f944d18e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,20 +4,17 @@ requires = [
   "setuptools_scm[toml]>=6.2",
   # see https://github.com/numpy/numpy/pull/18389
   "wheel>=0.36.2",
-
-  # cython version is imposed by that of numpy, see release notes
-  # https://github.com/numpy/numpy/releases/tag/v1.19.2
-  # Cython 3.0 is the next version after 0.29, and a major change,
-  # we forbid it until we can properly test against it
-  "Cython>=0.29.21",
-  "oldest-supported-numpy",
+  "Cython>=0.29.21, <3.1",
+  "numpy>=1.25, <2.0",
 ]
 
+requires-python = ">=3.9.2"
+
 [tool.setuptools_scm]
 
 [tool.black]
 line-length = 88
-target-version = ['py38']
+target-version = ['py39']
 include = '\.pyi?$'
 exclude = '''
 /(
diff --git a/pyxsim/utils.py b/pyxsim/utils.py
index a859ff2a..7e7184b3 100644
--- a/pyxsim/utils.py
+++ b/pyxsim/utils.py
@@ -219,10 +219,18 @@ def _metal_field(field, data):
 
 
 def compute_H_abund(abund_table):
+    if abund_table not in abund_tables:
+        raise KeyError(
+            f"Abundance table {abund_table} not found! Options are: {list(abund_tables.keys())}"
+        )
     return atomic_weights[1] / (atomic_weights * abund_tables[abund_table]).sum()
 
 
 def compute_zsolar(abund_table):
+    if abund_table not in abund_tables:
+        raise KeyError(
+            f"Abundance table {abund_table} not found! Options are: {list(abund_tables.keys())}"
+        )
     elems = atomic_weights * abund_tables[abund_table]
     return elems[3:].sum() / elems.sum()