Unpin, to see what happens (#531)

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### Pull Request Checklist:
- [ ] This PR addresses an already opened issue (for bug fixes /
features)
    - This PR fixes #xyz
- [ ] (If applicable) Documentation has been added / updated (for bug
fixes / features).
- [ ] (If applicable) Tests have been added.
- [x] This PR does not seem to break the templates.
- [ ] CHANGELOG.rst has been updated (with summary of main changes).
- [ ] Link to issue (:issue:`number`) and pull request (:pull:`number`)
has been added.

### What kind of change does this PR introduce?

* Unpin xarray, dask and zarr to see what happens.
* Change "<" pin of xESMF to "=!" as the bug is resolved in xESMF's
master.

### Does this PR introduce a breaking change?


### Other information:

docs/notebooks/6_config.ipynb

@@ -278,8 +278,7 @@
     "\n",
     "# Create a dummy dataset\n",
     "time = pd.date_range(\"1951-01-01\", \"2100-01-01\", freq=\"YS-JAN\")\n",
-    "da = xr.DataArray([0] * len(time), coords={\"time\": time})\n",
-    "da.name = \"test\"\n",
+    "da = xr.DataArray([0] * len(time), coords={\"time\": time}, name=\"test\")\n",
     "ds = da.to_dataset()\n",
     "\n",
     "# Call climatological_op using no argument other than what's in CONFIG\n",

environment-dev.yml

@@ -2,7 +2,7 @@ name: xscen-dev
 channels:
   - conda-forge
 dependencies:
-  - python >=3.10,<3.13
+  - python >=3.10,<3.14
   - pip >=25.0
   # Don't forget to sync changes between environment.yml, environment-dev.yml, and pyproject.toml!
   # Also consider updating the list in xs.utils.show_versions if you add a new package.
@@ -11,7 +11,7 @@ dependencies:
   - cftime
   - cf_xarray >=0.7.6
   - clisops >=0.15
-  - dask >=2024.8.1,<2024.11  # FIXME: https://github.com/Ouranosinc/xclim/issues/1992
+  - dask >=2024.8.1,<2024.12  # FIXME: Remove upper pin when https://github.com/pangeo-data/rechunker/pull/156 is merged
   - flox !=0.9.14  # FIXME: 0.9.14 is a broken version. This pin could be removed eventually.
   - fsspec
   - geopandas
@@ -31,10 +31,10 @@ dependencies:
   - shapely >=2.0
   - sparse
   - toolz
-  - xarray >=2023.11.0, !=2024.6.0, <2024.10.0 # FIXME: 2024.10.0 breaks rechunker with zarr, https://github.com/pangeo-data/rechunker/issues/154
+  - xarray >=2023.11.0, !=2024.6.0
   - xclim >=0.55, <0.56
   - xesmf >=0.7, !=0.8.8
-  - zarr >=2.13, <3.0 # FIXME: xarray is compatible with zarr 3.0 from 2025.01.1, but we pin xarray below that version
+  - zarr >=2.13, <3
   # Opt
   - nc-time-axis >=1.3.1
   - pyarrow >=10.0.1

environment.yml

@@ -2,7 +2,7 @@ name: xscen
 channels:
   - conda-forge
 dependencies:
-  - python >=3.10,<3.13
+  - python >=3.10,<3.14
   - pip >=25.0
   # Don't forget to sync changes between environment.yml, environment-dev.yml, and pyproject.toml!
   # Also consider updating the list in xs.utils.show_versions if you add a new package.
@@ -11,7 +11,7 @@ dependencies:
   - cftime
   - cf_xarray >=0.7.6
   - clisops >=0.15
-  - dask >=2024.8.1,<2024.11  # FIXME: https://github.com/Ouranosinc/xclim/issues/1992
+  - dask >=2024.8.1,<2024.12  # FIXME: Remove upper pin when https://github.com/pangeo-data/rechunker/pull/156 is merged
   - flox !=0.9.14  # FIXME: 0.9.14 is a broken version. This pin could be removed eventually.
   - fsspec
   - geopandas
@@ -31,10 +31,10 @@ dependencies:
   - shapely >=2.0
   - sparse
   - toolz
-  - xarray >=2023.11.0, !=2024.6.0, <2024.10.0 # FIXME: 2024.10.0 breaks rechunker with zarr
+  - xarray >=2023.11.0, !=2024.6.0
   - xclim >=0.55, <0.56
   - xesmf >=0.7, !=0.8.8
-  - zarr >=2.13, <3.0 # FIXME: xarray is compatible with zarr 3.0 from 2025.01.1, but we pin xarray below that version
+  - zarr >=2.13, <3
   # To install from source
   - flit >=3.10.1,<4.0
   # Opt

pyproject.toml

@@ -39,7 +39,7 @@ dependencies = [
   "cftime",
   "cf_xarray >=0.7.6",
   "clisops >=0.15",
-  "dask >=2024.8.1,<2024.11", # FIXME: https://github.com/Ouranosinc/xclim/issues/1992
+  "dask >=2024.8.1,<2024.12.0", # FIXME: Remove upper pin when https://github.com/pangeo-data/rechunker/pull/156 is merged
   "flox !=0.9.14", # FIXME: 0.9.14 is a broken version. This pin could be removed eventually.
   "fsspec",
   "geopandas",
@@ -61,9 +61,9 @@ dependencies = [
   "shapely >=2.0",
   "sparse",
   "toolz",
-  "xarray >=2023.11.0, !=2024.6.0, <2024.10.0", # FIXME: 2024.10.0 breaks rechunker with zarr
+  "xarray >=2023.11.0, !=2024.6.0",
   "xclim >=0.55, <0.56",
-  "zarr >=2.13, <3.0" # FIXME: xarray is compatible with zarr 3.0 from 2025.01.1, but we pin xarray below that version"
+  "zarr >=2.13,<3"
 ]
 
 [project.optional-dependencies]
@@ -110,7 +110,7 @@ docs = [
   "sphinxcontrib-napoleon"
 ]
 extra = [
-  "xesmf >=0.7, !=0.8.8"
+  "xesmf >=0.7, !=0.8.8" # FIXME: 0.8.8 currently creates segfaults on ReadTheDocs.
 ]
 all = ["xscen[dev]", "xscen[docs]", "xscen[extra]"]
 

src/xscen/io.py

@@ -1052,6 +1052,11 @@ def rechunk(
             ds = xr.open_dataset(path_in)
     else:
         ds = path_in
+    # Remove all input chunks information, avoids an error with rechunker and xarray >= 2024.10
+    # TODO: Remove this and pin rechunker when https://github.com/pangeo-data/rechunker/pull/156 is merged and released
+    for var in ds.variables.values():
+        var.encoding.pop("chunks", None)
+
     variables = list(ds.data_vars)
     if chunks_over_var:
         chunks = chunks_over_var