From 5bd6f92d14406e67cd4d09eb0b290e8f0c6d805e Mon Sep 17 00:00:00 2001
From: Nicola Masotti <masotti.nicola@gmail.com>
Date: Mon, 26 Oct 2026 19:25:38 +0100
Subject: [PATCH] Declare zarr and dask as dependencies, require xarray >=
 2025.6

---
 pyproject.toml |  8 +++-----
 uv.lock        | 18 +++++++++---------
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index e8bfbe4..5e21aa9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,6 @@ requires = ["setuptools>=77", "setuptools_scm>=8"]
 
 [dependency-groups]
 dev = [
-  "dask>=2026.8.0",
   "deptry>=0.25.1",
   "mypy>=1.15.0",
   "myst-parser>=4.0.1",
@@ -15,8 +14,7 @@ dev = [
   "pytest-cov>=5.0",
   "ruff>=0.15",
   "sphinx>=7.2",
-  "sphinx-autoapi>=3.6.0",
-  "zarr>=3.1.6"
+  "sphinx-autoapi>=3.6.0"
 ]
 
 [project]
@@ -32,7 +30,7 @@ classifiers = [
   "Programming Language :: Python :: 3.14",
   "Topic :: Scientific/Engineering"
 ]
-dependencies = ["attrs>=23.1", "cfgrib>=0.9.10.4", "ecmwf-datastores-client>=0.1", "ecmwf-opendata>=0.2", "numpy>=2.0", "pandas>=2.2.2", "polytope-client>=0.7.1", "xarray>=2024.10"]
+dependencies = ["attrs>=23.1", "cfgrib>=0.9.10.4", "dask>=2026.8.0", "ecmwf-datastores-client>=0.1", "ecmwf-opendata>=0.2", "numpy>=2.0", "pandas>=2.2.2", "polytope-client>=0.7.1", "xarray>=2025.6", "zarr>=3.1.6"]
 description = "Xarray backend to access ECMWF datastores"
 dynamic = ["version"]
 license = "Apache-2.0"
@@ -49,7 +47,7 @@ branch = true
 
 [tool.deptry.per_rule_ignores]
 DEP001 = ["cartopy", "matplotlib"]
-DEP002 = ["cfgrib"]
+DEP002 = ["cfgrib", "dask", "zarr"]
 
 [tool.mypy]
 strict = true
diff --git a/uv.lock b/uv.lock
index 2356acf..dbdd044 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2477,20 +2477,22 @@ wheels = [
 dependencies = [
   {name = "attrs"},
   {name = "cfgrib"},
+  {name = "dask"},
   {name = "ecmwf-datastores-client"},
   {name = "ecmwf-opendata"},
   {name = "numpy", version = "2.4.6", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version < '3.12'"},
   {name = "numpy", version = "2.5.4", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version >= '3.12'"},
   {name = "pandas"},
   {name = "polytope-client"},
-  {name = "xarray"}
+  {name = "xarray"},
+  {name = "zarr", version = "3.1.6", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version < '3.12'"},
+  {name = "zarr", version = "3.4.1", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version >= '3.12'"}
 ]
 name = "xarray-ecmwf"
 source = {editable = "."}
 
 [package.dev-dependencies]
 dev = [
-  {name = "dask"},
   {name = "deptry"},
   {name = "mypy"},
   {name = "myst-parser"},
@@ -2502,26 +2504,25 @@ dev = [
   {name = "ruff"},
   {name = "sphinx", version = "9.0.4", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version < '3.12'"},
   {name = "sphinx", version = "9.1.0", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version >= '3.12'"},
-  {name = "sphinx-autoapi"},
-  {name = "zarr", version = "3.1.6", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version < '3.12'"},
-  {name = "zarr", version = "3.4.1", source = {registry = "https://pypi.org/simple"}, marker = "python_full_version >= '3.12'"}
+  {name = "sphinx-autoapi"}
 ]
 
 [package.metadata]
 requires-dist = [
   {name = "attrs", specifier = ">=23.1"},
   {name = "cfgrib", specifier = ">=0.9.10.4"},
+  {name = "dask", specifier = ">=2026.8.0"},
   {name = "ecmwf-datastores-client", specifier = ">=0.1"},
   {name = "ecmwf-opendata", specifier = ">=0.2"},
   {name = "numpy", specifier = ">=2.0"},
   {name = "pandas", specifier = ">=2.2.2"},
   {name = "polytope-client", specifier = ">=0.7.1"},
-  {name = "xarray", specifier = ">=2024.10"}
+  {name = "xarray", specifier = ">=2025.6"},
+  {name = "zarr", specifier = ">=3.1.6"}
 ]
 
 [package.metadata.requires-dev]
 dev = [
-  {name = "dask", specifier = ">=2026.8.0"},
   {name = "deptry", specifier = ">=0.25.1"},
   {name = "mypy", specifier = ">=1.15.0"},
   {name = "myst-parser", specifier = ">=4.0.1"},
@@ -2532,8 +2533,7 @@ dev = [
   {name = "pytest-cov", specifier = ">=5.0"},
   {name = "ruff", specifier = ">=0.15"},
   {name = "sphinx", specifier = ">=7.2"},
-  {name = "sphinx-autoapi", specifier = ">=3.6.0"},
-  {name = "zarr", specifier = ">=3.1.6"}
+  {name = "sphinx-autoapi", specifier = ">=3.6.0"}
 ]
 
 [[package]]