Updates for linting and CI

.drone.yml

@@ -1,18 +1,19 @@
 kind: pipeline
 type: docker
-name: CI Test Pipeline
+name: CI Test/Lint Pipeline
 
 steps:
-- name: greeting
-  image: alpine
-  commands:
-  - echo "Welcome to drone\n"
-
 - name: Unit Tests
   image: python:3.11-bullseye
   commands:
     - bash -c './scripts/run_unit_tests.sh'
 
+- name: Lint Check
+  parallel: true
+  image: python:3.11-bullseye
+  commands:
+    - bash -c './scripts/run_lint_checks.sh'
+
 trigger:
   event:
     - pull_request

pyproject.toml

@@ -3,6 +3,7 @@ profile = "black"
 line_length = 120
 force_single_line = true
 filter_files = true
+skip_glob = ["env/*"]
 
 [tool.black]
 line-length = 120

scripts/run_lint_checks.sh

@@ -0,0 +1,14 @@
+#! /usr/bin/env bash
+set -exu
+
+# shellcheck source=/dev/null
+source "$(dirname "$0")/_common.sh"
+
+if [ "${DRONE:-false}" == "true" ]; then
+    _setup_env
+    pip install -r dev-requirements.txt
+fi
+
+pushd "$(dirname "$0")/../"
+"${VIRTUAL_ENV}/bin/python" -m invoke lint --verbose
+popd

tasks.py

@@ -1,3 +1,6 @@
+import sys
+
+from invoke import Failure
 from invoke import task
 
 
@@ -18,3 +21,37 @@ def serve_dev(c, debugger=True, reload=True, threads=True, port=8888, host="0.0.
 def test(c):
     """executes test suite"""
     c.run("pytest -vvv tests/", pty=True)
+
+
+@task
+def lint(c, verbose=False):
+    """Executes linter checks"""
+    exit_code = 0
+    c.run("echo 'Checking isort'")
+    try:
+        c.run(f"isort {'-v' if verbose else ''}  --check .", pty=True)
+    except Failure:
+        exit_code = 1
+
+    c.run("echo 'Lint check black'")
+    try:
+        c.run(f"black {'-v' if verbose else ''} --check .", pty=True)
+    except Failure:
+        exit_code = 1
+
+    c.run("echo 'Lint check with ruff'")
+    try:
+        c.run(f"ruff check {'-v' if verbose else ''} .", pty=True)
+    except Failure:
+        exit_code = 1
+
+    if exit_code:
+        c.run("echo 'ERROR: failed lint checks' >&2 ")
+        sys.exit(exit_code)
+
+
+@task
+def delint(c):
+    """Runs code formaters isort, black"""
+    c.run("isort .", pty=True)
+    c.run("black .", pty=True)