feat(geospatial): update read_geo to support url

In the upcoming update of the spatial extension, to be able to
read form a url, the httpfs extension is needed.

ibis/backends/duckdb/__init__.py

@@ -528,8 +528,13 @@ def read_geo(
         # load geospatial extension
         self.load_extension("spatial")
 
+        source = util.normalize_filename(source)
+
+        if source.startswith(("http://", "https://", "s3://")):
+            self._load_extensions(["httpfs"])
+
         source_expr = sa.select(sa.literal_column("*")).select_from(
-            sa.func.st_read(util.normalize_filename(source), _format_kwargs(kwargs))
+            sa.func.st_read(source, _format_kwargs(kwargs))
         )
 
         view = self._compile_temp_view(table_name, source_expr)

ibis/backends/duckdb/tests/test_register.py

@@ -108,6 +108,32 @@ def test_read_geo_to_geopandas(con, data_dir):
     assert isinstance(gdf, gpd.GeoDataFrame)
 
 
+@pytest.mark.xfail(
+    LINUX and SANDBOXED,
+    reason="nix on linux cannot download duckdb extensions or data due to sandboxing",
+)
+def test_read_geo_from_url():
+    # httpfs is needed to read from url on nightly spatial extension
+    gpd = pytest.importorskip("geopandas")
+
+    con = ibis.duckdb.connect()
+    # TODO(ncclementi): remove force install when spatial is updated
+    # see https://github.com/duckdb/duckdb_spatial/issues/210
+    con.raw_sql(
+        """\
+        FORCE INSTALL spatial FROM 'http://nightly-extensions.duckdb.org';
+        LOAD spatial;
+        """
+    )
+
+    url = "https://raw.githubusercontent.com/ibis-project/testing-data/master/geojson/zones.geojson"
+
+    t = con.read_geo(url)
+
+    gdf = t.head().to_pandas()
+    assert isinstance(gdf, gpd.GeoDataFrame)
+
+
 @pytest.mark.xfail_version(
     duckdb=["duckdb<0.7.0"], reason="read_json_auto doesn't exist", raises=exc.IbisError
 )