Work on a GitHub action to auto-update translations on Transifex

.github/workflows/translations.yml

@@ -0,0 +1,34 @@
+name: Transifex
+on:
+  push:
+    branches: [master, ]
+
+
+jobs:
+    Push-To-Transifex:
+        name: Update translations on Transifex
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout source code
+              uses: actions/checkout@master
+              with:
+                fetch-depth: 2
+
+            - name: Set up Python
+              uses: actions/setup-python@master
+              with:
+                python-version: 3.8
+
+            - name: Install calibre dependencies
+              run:
+                  python setup/unix-ci.py install
+
+            - name: Install transifex client
+              run:
+                python -m pip install transifex-client
+
+            - name: Update translations
+              env:
+                tx: ${{ secrets.tx }}
+              run:
+                  python setup/unix-ci.py pot

setup/unix-ci.py

@@ -115,11 +115,24 @@ def main():
         install_env()
         run_python('setup.py bootstrap --ephemeral')
 
+    elif action == 'pot':
+        install_env()
+        transifexrc = '''\
+[https://www.transifex.com]
+api_hostname = https://api.transifex.com
+hostname = https://www.transifex.com
+password = PASSWORD
+username = api
+'''.replace('PASSWORD', os.environ['tx'])
+        with open(os.path.expanduser('~/.transifexrc'), 'w') as f:
+            f.write(transifexrc)
+        run_python('setup.py pot')
+
     elif action == 'test':
         os.environ['CI'] = 'true'
         if ismacos:
-            os.environ['SSL_CERT_FILE'
+            os.environ['SSL_CERT_FILE'] = os.path.abspath(
-                       ] = os.path.abspath('resources/mozilla-ca-certs.pem')
+                'resources/mozilla-ca-certs.pem')
 
         install_env()
         run_python('setup.py test')