Cannot change Deepl API URL

[pavel-francirek]

Describe the issue
While using Deepl free plan if I set WEBLATE_MT_DEEPL_API_URL to https://api-free.deepl.com/v2 original (paid plan) URL is still used.

I already tried

In docker-compose.override.yml set WEBLATE_MT_DEEPL_API_URL: https://api-free.deepl.com/v2/
Started docker image, run bash (docker-compose exec --user weblate weblate bash), env shows variable set but weblate auto_translate --mt deepl xxx xxx en throws traceback

To Reproduce the issue

Steps to reproduce the behavior:

1. set WEBLATE_MT_DEEPL_API_URL: https://api-free.deepl.com/v2/ in docker-compose.override.yml
2. docker-compose up -d
3. docker-compose exec --user weblate weblate bash
4. env | grep WEBLATE_MT_DEEPL_API_URL shows WEBLATE_MT_DEEPL_API_URL=https://api-free.deepl.com/v2/
5. weblate auto_translate --mt deepl xxx xxx en

Expected behavior

Free plan URL is used

Exception traceback

[2021-05-29 22:32:21,283: WARNING/1526] Machinery error: HTTPError: 403 Client Error: Forbidden for url: https://api.deepl.com/v2/languages
[2021-05-29 22:32:21,284: ERROR/1526] Failed to fetch languages from DeepL, using defaults
[2021-05-29 22:32:21,309: WARNING/1526] Handled exception: MachineTranslationError: HTTPError('403 Client Error: Forbidden for url: https://api.deepl.com/v2/languages')
Traceback (most recent call last):
  File "/usr/local/bin/weblate", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.7/dist-packages/weblate/runner.py", line 34, in main
    utility.execute()
  File "/usr/local/lib/python3.7/dist-packages/django/core/management/__init__.py", line 413, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python3.7/dist-packages/django/core/management/base.py", line 354, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/usr/local/lib/python3.7/dist-packages/weblate/utils/management/base.py", line 42, in execute
    return super().execute(*args, **options)
  File "/usr/local/lib/python3.7/dist-packages/django/core/management/base.py", line 398, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python3.7/dist-packages/weblate/trans/management/commands/auto_translate.py", line 122, in handle
    translation=translation,
  File "/usr/local/lib/python3.7/dist-packages/celery/local.py", line 188, in __call__
    return self._get_current_object()(*a, **kw)
  File "/usr/local/lib/python3.7/dist-packages/celery/app/task.py", line 388, in __call__
    return self.run(*args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/celery/app/autoretry.py", line 34, in run
    return task._orig_run(*args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/weblate/trans/tasks.py", line 389, in auto_translate
    auto.process_mt(engines, threshold)
  File "/usr/local/lib/python3.7/dist-packages/weblate/trans/autotranslate.py", line 177, in process_mt
    translations = self.fetch_mt(engines, int(threshold))
  File "/usr/local/lib/python3.7/dist-packages/weblate/trans/autotranslate.py", line 165, in fetch_mt
    threshold=threshold,
  File "/usr/local/lib/python3.7/dist-packages/weblate/machinery/base.py", line 380, in batch_translate
    translation.component.source_language, translation.language
  File "/usr/local/lib/python3.7/dist-packages/weblate/machinery/base.py", line 286, in get_languages
    raise MachineTranslationError(repr(self.supported_languages_error))
weblate.machinery.base.MachineTranslationError: HTTPError('403 Client Error: Forbidden for url: https://api.deepl.com/v2/languages')

Server configuration and status

Weblate installation: Docker

[2021-05-29 22:35:57,670: INFO/1614] configured Sentry error collection, extras: {}

• Weblate: 4.6.2
• Django: 3.2.2
• siphashc: 2.1
• translate-toolkit: 3.3.6
• lxml: 4.6.3
• Pillow: 8.2.0
• bleach: 3.3.0
• python-dateutil: 2.8.1
• social-auth-core: 4.1.0
• social-auth-app-django: 4.0.0
• django-crispy-forms: 1.11.2
• oauthlib: 3.1.0
• django-compressor: 2.4.1
• djangorestframework: 3.12.4
• django-filter: 2.4.0
• django-appconf: 1.0.4
• user-agents: 2.2.0
• filelock: 3.0.12
• setuptools: 40.8.0
• jellyfish: 0.8.2
• openpyxl: 3.0.7
• celery: 5.0.5
• kombu: 5.0.2
• translation-finder: 2.9
• weblate-language-data: 2021.4
• html2text: 2020.1.16
• pycairo: 1.16.2
• pygobject: 3.30.4
• diff-match-patch: 20200713
• requests: 2.25.1
• django-redis: 4.12.1
• hiredis: 2.0.0
• sentry_sdk: 1.1.0
• Cython: 0.29.23
• misaka: 2.1.1
• GitPython: 3.1.14
• borgbackup: 1.1.16
• pyparsing: 2.4.7
• pyahocorasick: 1.4.2
• python-redis-lock: 3.7.0
• Python: 3.7.3
• Git: 2.20.1
• psycopg2: 2.8.6
• psycopg2-binary: 2.8.6
• phply: 1.2.5
• chardet: 4.0.0
• ruamel.yaml: 0.17.4
• tesserocr: 2.5.1
• akismet: 1.1
• boto3: 1.17.69
• zeep: 4.0.0
• aeidon: 1.9
• iniparse: 0.5
• mysqlclient: 2.0.3
• Mercurial: 5.8
• git-svn: 2.20.1
• git-review: 2.1.0
• Redis server: 4.0.14
• PostgreSQL server: 11.12
• Database backends: django.db.backends.postgresql
• Cache backends: default:RedisCache, avatar:FileBasedCache
• Email setup: django.core.mail.backends.smtp.EmailBackend
• OS encoding: filesystem=utf-8, default=utf-8
• Celery: redis://cache:6379/1, redis://cache:6379/1, regular
• Platform: Linux 5.4.0-70-generic (x86_64)`

Weblate deploy checks

$ weblate check --deploy

[2021-05-29 22:37:35,257: INFO/1673] configured Sentry error collection, extras: {}
System check identified some issues:

WARNINGS:
?: (security.W004) You have not set a value for the SECURE_HSTS_SECONDS setting. If your entire site is served only over SSL, you may want to consider setting a value and enabling HTTP Strict Transport Security. Be sure to read the documentation first; enabling HSTS carelessly can cause serious, irreversible problems.
?: (security.W008) Your SECURE_SSL_REDIRECT setting is not set to True. Unless your site should be available over both SSL and non-SSL connections, you may want to either set this setting True or configure a load balancer or reverse-proxy server to redirect all connections to HTTPS.
?: (security.W012) SESSION_COOKIE_SECURE is not set to True. Using a secure-only session cookie makes it more difficult for network traffic sniffers to hijack user sessions.

System check identified 3 issues (1 silenced).

[pavel-francirek]

Sorry, I found now it is too recent change solved in #5952

[github-actions]

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