ci:split checks into py & go jobs

.travis.yml

@@ -24,14 +24,21 @@ stages:
 jobs:
   include:
   # patch formatting checks
-  - name: "Check patch formatting"
+  - name: "Python formatting"
     stage: check
+    os: linux
+    language: python
+    python: 3.7
+    before_install:
+    install:
+    script: ./scripts/ci/check_patch.sh
+  - name: "Script formatting"
     os: linux
     language: go
     go: 1.13
     before_install:
     install:
-    script: ./scripts/ci/check_patch.sh
+    script: ./scripts/ci/check_scripts.sh
   # test jobs
   - name: "3.7 on Windows"
     stage: test

scripts/ci/check_patch.sh

@@ -3,10 +3,13 @@
 set -x
 set -e
 
-python3 -m pip install --user Pygments collective.checkdocs pre-commit
+pip install Pygments collective.checkdocs pre-commit
 
 # stop the build if there are any readme formatting errors
-python3 setup.py checkdocs
+python setup.py checkdocs
 
 # stop the build if there are any formatting errors
-GO111MODULE=on pre-commit run --all-files
+err=0
+pre-commit run --all-files black || err=1
+pre-commit run --all-files flake8 || err=1
+exit $err

scripts/ci/check_scripts.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -x
+set -e
+
+# stop the build if there are any formatting errors
+GO111MODULE=on pre-commit run --all-files shfmt