Fix doc version in stable doc build (#2543)

Author: dstansby

.readthedocs.yaml

@@ -4,6 +4,9 @@ build:
   os: ubuntu-20.04
   tools:
     python: "3.11"
+  jobs:
+    post_checkout:
+      - git fetch --unshallow || true
 
 sphinx:
   configuration: docs/conf.py

docs/conf.py

@@ -73,8 +73,8 @@
 copyright = "2024, Zarr Developers"
 author = "Zarr Developers"
 
-version = get_version("zarr")
 release = get_version("zarr")
+version = get_version("zarr")
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=64.0.0", "setuptools-scm>1.5.4"]
+requires = ["setuptools>=64", "setuptools-scm>8"]
 build-backend = "setuptools.build_meta"
 
 
@@ -68,9 +68,8 @@ packages = ["zarr", "zarr._storage", "zarr.tests"]
 license-files = ["LICENSE.txt"]
 
 [tool.setuptools_scm]
-version_scheme = "guess-next-dev"
 local_scheme = "dirty-tag"
-write_to = "zarr/version.py"
+version_file = "zarr/version.py"
 
 [tool.ruff]
 line-length = 100