ci: Add minimum version test

.github/workflows/test.yaml

@@ -180,13 +180,14 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest"]
-        environment: ["test-core"]
+        environment: ["test-core", "test-minimum"]
     timeout-minutes: 120
     steps:
       - uses: holoviz-dev/holoviz_tasks/pixi_install@v0
         with:
           environments: ${{ matrix.environment }}
       - name: Check packages latest version
+        if: ${{ matrix.environment == 'test-core' }}
         run: |
           pixi run -e ${{ matrix.environment }} check-latest-packages numpy pandas bokeh panel param
       - name: Test Unit

holoviews/core/data/pandas.py

@@ -355,8 +355,6 @@ def sort(cls, dataset, by=None, reverse=False):
 
     @classmethod
     def sorted_index(cls, df):
-        if hasattr(df.index, 'is_lexsorted'):
-            return df.index.is_lexsorted()
         return df.index.is_monotonic_increasing
 
     @classmethod

holoviews/tests/conftest.py

@@ -5,7 +5,11 @@
 import panel as pn
 import pytest
 from panel.tests.conftest import port, server_cleanup  # noqa: F401
-from panel.tests.util import serve_and_wait
+
+try:
+    from panel.tests.util import serve_and_wait
+except ImportError:
+    pass
 
 import holoviews as hv
 

pixi.toml

@@ -19,6 +19,7 @@ test-311 = ["py311", "test-core", "test", "example", "test-example", "test-unit-
 test-312 = ["py312", "test-core", "test", "example", "test-example", "test-unit-task"]
 test-ui = ["py312", "test-core", "test", "test-ui"]
 test-core = ["py313", "test-core", "test-unit-task"]
+test-minimum = ["min-pins", "test-core", "test-min-task"]
 test-gpu = ["py312", "test-core", "test", "test-gpu"]
 docs = ["py311", "example", "doc"]
 build = ["py311", "build"]
@@ -37,6 +38,15 @@ panel = ">=1.0"
 param = ">=2.0,<3.0"
 pyviz_comms = ">=2.1"
 
+[feature.min-pins.dependencies]
+python = "3.9.*"
+bokeh = "3.1.*"
+numpy = "1.21.*"
+pandas = "1.3.*"
+panel = "1.2.*"
+param = "2.0.*"
+pyviz_comms = "2.1.*"
+
 [feature.py39.dependencies]
 python = "3.9.*"
 panel = "1.4.*"
@@ -153,6 +163,16 @@ rmm = { version = "*", channel = "rapidsai" }
 [feature.test-gpu.tasks]
 test-gpu = "pytest holoviews/tests --gpu"
 
+[feature.test-min-task.tasks]
+# This is needed to avoid SyntaxError when importing
+# panel in the conftest. Fixed in Panel 1.4.0
+# https://github.com/holoviz/panel/pull/6255
+_panel_import = "python -c 'import panel'"
+
+[feature.test-min-task.tasks.test-unit]
+depends_on = ["_panel_import"]
+cmd = 'pytest holoviews/tests -n logical --dist loadgroup'
+
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