Skip i18n-specific things if website is not i18n

lektor.yml

@@ -37,18 +37,24 @@ pages:
   stage: build
   script:
     - *apt-template
-    - DEBIAN_FRONTEND=noninteractive apt-get install gettext python3-babel python3-pip git python3-inifile python3-dev python3-setuptools python3-openssl python3-cryptography python3-venv i18nspector apt-utils ca-certificates -y
+    - DEBIAN_FRONTEND=noninteractive apt-get install python3-pip git python3-inifile python3-dev python3-setuptools python3-openssl python3-cryptography python3-venv apt-utils ca-certificates -y
     - python3 -m venv venv
     - source venv/bin/activate
     - pip3 install lektor
-    - echo 'checking out translations'
-    - rm -rf i18n
-    - git clone --branch $TRANSLATION_BRANCH --depth=1 https://git.torproject.org/translation.git i18n
-    - echo 'reinstall lektor plugins'
-    - lektor project-info --output-path
-    - lektor plugins reinstall
-    - echo 'building lektor 3 more times to get translations in place'
-    - lektor build --output-path public && lektor build --output-path public && lektor build --output-path public
+    - >
+      if [ -n "${TRANSLATION_BRANCH}" ]; then
+        DEBIAN_FRONTEND=noninteractive apt-get install gettext python3-babel i18nspector
+        echo 'checking out translations'
+        rm -rf i18n
+        git clone --branch "${TRANSLATION_BRANCH}" --depth=1 https://git.torproject.org/translation.git i18n
+        echo 'reinstall lektor plugins'
+        lektor project-info --output-path
+        lektor plugins reinstall
+        echo 'building lektor 3 more times to get translations in place'
+        lektor build --output-path public && lektor build --output-path public && lektor build --output-path public
+      else
+        lektor build --output-path public
+      fi
   artifacts:
     paths:
       - public