From 7ff2d24b0889bf189e78a1c19ba0a80e8a78112e Mon Sep 17 00:00:00 2001
From: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
Date: Wed, 3 Jun 2026 22:56:28 -0700
Subject: [PATCH 1/2] ci: add Python 3.14 test environment to CI matrix

---
 .github/workflows/ci.yaml | 16 +++++++++++---
 pixi.toml                 | 44 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 9b94f17540d..d0619bd40a4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -71,8 +71,8 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        # Bookend python versions
-        pixi-env: ["test-py311", "test-py313"]
+        # Main python versions
+        pixi-env: ["test-py311", "test-py313", "test-py314"]
         pytest-addopts: [""]
         include:
           # Minimum python version:
@@ -82,7 +82,7 @@ jobs:
             os: ubuntu-latest
           - pixi-env: "test-py311-min-versions"
             os: ubuntu-latest
-          # Latest python version:
+          # Recent python version variants:
           - pixi-env: "test-py313-no-numba"
             os: ubuntu-latest
           - pixi-env: "test-py313-no-dask"
@@ -90,6 +90,13 @@ jobs:
           - pixi-env: "test-py313"
             pytest-addopts: "flaky"
             os: ubuntu-latest
+          - pixi-env: "test-py314-no-numba"
+            os: ubuntu-latest
+          - pixi-env: "test-py314-no-dask"
+            os: ubuntu-latest
+          - pixi-env: "test-py314"
+            pytest-addopts: "flaky"
+            os: ubuntu-latest
           # The mypy tests must be executed using only 1 process in order to guarantee
           # predictable mypy output messages for comparison to expectations.
           - pixi-env: "test-py311-with-typing"
@@ -99,6 +106,9 @@ jobs:
           - pixi-env: "test-py313-with-typing"
             numprocesses: 1
             os: ubuntu-latest
+          - pixi-env: "test-py314-with-typing"
+            numprocesses: 1
+            os: ubuntu-latest
 
     environment:
       name: codecov
diff --git a/pixi.toml b/pixi.toml
index 3e429f6f6eb..6e7ef6afb5c 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -38,6 +38,9 @@ python = "3.12.*"
 [feature.py313.dependencies]
 python = "3.13.*"
 
+[feature.py314.dependencies]
+python = "3.14.*"
+
 [feature.backends.dependencies]
 # files
 h5netcdf = "*"
@@ -407,6 +410,34 @@ test-py313 = { features = [
   "viz",
   "extras",
 ] }
+test-py314-no-numba = { features = [
+  "py314",
+  "test",
+  "backends",
+  "accel",
+  "dask",
+  "viz",
+  "extras",
+] }
+test-py314-no-dask = { features = [
+  "py314",
+  "test",
+  "backends",
+  "accel",
+  "numba",
+  "viz",
+  "extras",
+] }
+test-py314 = { features = [
+  "py314",
+  "test",
+  "backends",
+  "accel",
+  "numba",
+  "dask",
+  "viz",
+  "extras",
+] }
 test-nightly = { features = [
   "py313",
   "nightly",
@@ -467,6 +498,19 @@ test-py313-with-typing = { features = [
   "typing-stubs",
 ] }
 
+test-py314-with-typing = { features = [
+  "py314",
+  "test",
+  "backends",
+  "accel",
+  "numba",
+  "dask",
+  "viz",
+  "extras",
+  "typing",
+  "typing-stubs",
+] }
+
 test-py311-bare-minimum = { features = ["test", "minimal"] }
 test-py311-bare-min-and-scipy = { features = [
   "test",

From 1e78a4d5261429b83acc144eb6a30f42525f963a Mon Sep 17 00:00:00 2001
From: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
Date: Fri, 5 Jun 2026 20:14:48 -0700
Subject: [PATCH 2/2] ci: replace 3.13 with 3.14 in main test matrix per review

Co-authored-by: Claude <noreply@anthropic.com>
---
 .github/workflows/ci.yaml | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d0619bd40a4..e668594fb20 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -71,8 +71,8 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        # Main python versions
-        pixi-env: ["test-py311", "test-py313", "test-py314"]
+        # Bookend python versions
+        pixi-env: ["test-py311", "test-py314"]
         pytest-addopts: [""]
         include:
           # Minimum python version:
@@ -82,14 +82,7 @@ jobs:
             os: ubuntu-latest
           - pixi-env: "test-py311-min-versions"
             os: ubuntu-latest
-          # Recent python version variants:
-          - pixi-env: "test-py313-no-numba"
-            os: ubuntu-latest
-          - pixi-env: "test-py313-no-dask"
-            os: ubuntu-latest
-          - pixi-env: "test-py313"
-            pytest-addopts: "flaky"
-            os: ubuntu-latest
+          # Latest python version:
           - pixi-env: "test-py314-no-numba"
             os: ubuntu-latest
           - pixi-env: "test-py314-no-dask"
@@ -103,9 +96,6 @@ jobs:
             pytest-addopts: "mypy"
             numprocesses: 1
             os: ubuntu-latest
-          - pixi-env: "test-py313-with-typing"
-            numprocesses: 1
-            os: ubuntu-latest
           - pixi-env: "test-py314-with-typing"
             numprocesses: 1
             os: ubuntu-latest