chore: drop support for Python 3.8

BREAKING CHANGE: The minimum supported Python version is now Python 3.9

.github/workflows/conda-lock.yml

@@ -12,7 +12,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"

.github/workflows/ibis-backends-cloud.yml

@@ -29,7 +29,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.8"
+          - "3.9"
           - "3.11"
         backend:
           - name: bigquery

.github/workflows/ibis-backends.yml

@@ -43,7 +43,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.8"
+          - "3.9"
           - "3.11"
     steps:
       - name: checkout
@@ -91,7 +91,7 @@ jobs:
           - ubuntu-latest
           - windows-latest
         python-version:
-          - "3.8"
+          - "3.9"
           - "3.11"
         backend:
           - name: dask
@@ -411,7 +411,7 @@ jobs:
           - ubuntu-latest
           - windows-latest
         python-version:
-          - "3.8"
+          - "3.9"
           - "3.11"
         backend:
           - name: dask
@@ -547,7 +547,7 @@ jobs:
               - snowflake-connector-python
         include:
           - os: ubuntu-latest
-            python-version: "3.8"
+            python-version: "3.9"
             pandas:
               version: "1.5.*"
           - os: ubuntu-latest
@@ -805,7 +805,7 @@ jobs:
           - ubuntu-latest
           - windows-latest
         python-version:
-          - "3.8"
+          - "3.9"
           - "3.11"
     steps:
       - name: checkout

.github/workflows/ibis-main.yml

@@ -44,7 +44,6 @@ jobs:
           - ubuntu-latest
           - windows-latest
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"

.github/workflows/nix-skip-helper.yml

@@ -31,7 +31,6 @@ jobs:
         os:
           - ubuntu-latest
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"

.github/workflows/nix.yml

@@ -32,7 +32,6 @@ jobs:
         os:
           - ubuntu-latest
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"

ibis/backends/tests/test_aggregation.py

@@ -1,5 +1,3 @@
-import sys
-
 import numpy as np
 import pandas as pd
 import pytest
@@ -12,7 +10,6 @@
 import ibis.expr.datatypes as dt
 from ibis import _
 from ibis import literal as L
-from ibis.backends.conftest import WINDOWS
 from ibis.udf.vectorized import reduction
 
 try:
@@ -124,12 +121,6 @@ def mean_udf(s):
 def make_argidx_params(marks):
     marks = [
         pytest.mark.notyet(marks, raises=com.OperationNotDefinedError),
-        pytest.mark.broken(
-            ["sqlite"],
-            condition=WINDOWS and sys.version_info < (3, 11),
-            reason="JSON functions aren't available",
-            raises=sa.exc.OperationalError,
-        ),
     ]
     return [
         param(
@@ -465,12 +456,6 @@ def mean_and_std(v):
                     ],
                     raises=com.OperationNotDefinedError,
                 ),
-                pytest.mark.broken(
-                    ["sqlite"],
-                    condition=WINDOWS and sys.version_info < (3, 11),
-                    reason="JSON functions aren't available",
-                    raises=sa.exc.OperationalError,
-                ),
             ],
         ),
         param(
@@ -489,12 +474,6 @@ def mean_and_std(v):
                     ],
                     raises=com.OperationNotDefinedError,
                 ),
-                pytest.mark.broken(
-                    ["sqlite"],
-                    condition=WINDOWS and sys.version_info < (3, 11),
-                    reason="JSON functions aren't available",
-                    raises=sa.exc.OperationalError,
-                ),
             ],
         ),
         param(

ibis/util.py

@@ -511,13 +511,6 @@ def import_object(qualname: str) -> Any:
 
 
 def normalize_filename(source: str | Path) -> str:
-    def _removeprefix(text, prefix):
-        # TODO: remove when we drop Python 3.8
-        try:
-            return text.removeprefix(prefix)
-        except AttributeError:
-            return text[text.startswith(prefix) and len(prefix) :]
-
     source = str(source)
     for prefix in (
         "parquet",
@@ -529,7 +522,7 @@ def _removeprefix(text, prefix):
         "tsv.gz",
         "file",
     ):
-        source = _removeprefix(source, f"{prefix}://")
+        source = source.removeprefix(f"{prefix}://")
 
     def _absolufy_paths(name):
         if not name.startswith(("http", "s3", "az", "abfs", "abfss", "adl", "gs")):

nix/overlay.nix

@@ -25,12 +25,10 @@ in
     sha256 = "sha256-q1b5IcOl5oIFXP7/P5RufncjHEVrWp4NjoU2uo/BE9U=";
   };
 
-  ibis38 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python38; };
   ibis39 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python39; };
   ibis310 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python310; };
   ibis311 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python311; };
 
-  ibisDevEnv38 = mkPoetryDevEnv pkgs.python38;
   ibisDevEnv39 = mkPoetryDevEnv pkgs.python39;
   ibisDevEnv310 = mkPoetryDevEnv pkgs.python310;
   ibisDevEnv311 = mkPoetryDevEnv pkgs.python311;

pyproject.toml

@@ -29,11 +29,10 @@ classifiers = [
 "Issue Tracker" = "https://github.com/ibis-project/ibis/issues"
 
 [tool.poetry.dependencies]
-python = "^3.8"
+python = "^3.9"
 atpublic = ">=2.3,<5"
 bidict = ">=0.22.1,<1"
 filelock = ">=3.7.0,<4"
-importlib-resources = { version = ">=5,<6", python = "<3.9" }
 multipledispatch = ">=0.6,<2"
 numpy = ">=1,<2"
 pandas = ">=1.2.5,<3"