MAINT: Add linkcheck Pixi task (#11160)

Author: VeckoTheGecko

doc/conf.py

@@ -269,6 +269,10 @@
 html_static_path = ["_static"]
 html_css_files = ["style.css"]
 
+linkcheck_exclude_documents = [
+    r'whats-new.*', # Allow broken links in old release notes
+]
+
 
 # configuration for sphinxext.opengraph
 ogp_site_url = "https://docs.xarray.dev/en/latest/"

pixi.toml

@@ -243,6 +243,7 @@ cfgrib = "*"
 [feature.doc.tasks]
 doc = { cmd = "make html", cwd = "doc" }
 doc-clean = { cmd = "make clean && make html", cwd = "doc" }
+linkcheck = { cmd = "make linkcheck", cwd = "doc", description = "Check URLs in documentation." }
 
 
 [feature.typing.dependencies]