ci(pre-commit): add a pre-commit job to CI

.circleci/config.yml

@@ -1,10 +1,43 @@
 version: 2.1
 
 orbs:
-  python: circleci/[email protected]
-  codecov: codecov/[email protected]
+  codecov: codecov/[email protected]
 
 jobs:
+  pre-commit:
+    parameters:
+      config_file:
+        default: ./.pre-commit-config.yaml
+        description: Optional, path to pre-commit config file.
+        type: string
+      cache_prefix:
+        default: ''
+        description: |
+          Optional cache prefix to be used on CircleCI. Can be used for cache busting or to ensure multiple jobs use different caches.
+        type: string
+    docker:
+      - image: speckle/pre-commit-runner:latest
+    resource_class: medium
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - cache-pre-commit-<<parameters.cache_prefix>>-{{ checksum "<<parameters.config_file>>" }}
+      - run:
+          name: Install pre-commit hooks
+          command: pre-commit install-hooks --config <<parameters.config_file>>
+      - save_cache:
+          key: cache-pre-commit-<<parameters.cache_prefix>>-{{ checksum "<<parameters.config_file>>" }}
+          paths:
+            - ~/.cache/pre-commit
+      - run:
+          name: Run pre-commit
+          command: pre-commit run --all-files
+      - run:
+          command: git --no-pager diff
+          name: git diff
+          when: on_fail
+
   test:
     machine:
       image: ubuntu-2204:2023.02.1
@@ -52,6 +85,10 @@ jobs:
 workflows:
   main:
     jobs:
+      - pre-commit:
+          filters:
+            tags:
+              only: /.*/
       - test:
           matrix:
             parameters:
@@ -62,6 +99,7 @@ workflows:
       - deploy:
           context: pypi
           requires:
+            - pre-commit
             - test
           filters:
             tags: