Arca v02 compatability

Author: mikicz

.travis.yml

@@ -7,6 +7,7 @@ cache:
   - .arca/cache
 install:
 - pip install -r test_requirements.txt
+- pip install 'arca[docker]>=0.2'
 before_script:  # encrypted variables aren't accessible in PRs
 - 'if [ -n "$DOCKER_HUB_PASSWORD" ]; then docker login -u "$DOCKER_HUB_USERNAME" -p "$DOCKER_HUB_PASSWORD"; fi'
 - 'if [ -z "$DOCKER_HUB_PASSWORD" ]; then export ARCA_BACKEND_REGISTRY_PULL_ONLY=true; fi'

naucse/utils/models.py

@@ -19,10 +19,6 @@ def arca():
     _arca = Arca(settings={"ARCA_BACKEND": "arca.backend.CurrentEnvironmentBackend",
                            "ARCA_BACKEND_CURRENT_ENVIRONMENT_REQUIREMENTS": "requirements.txt",
                            "ARCA_BACKEND_VERBOSITY": 2,
-                           # required by PyNaCl which is required by Gabric3 which is required by Arca
-                           # only needed for Arcas Vagrant backend, can be removed once Arca
-                           # implements optional requirements
-                           "ARCA_BACKEND_APK_DEPENDENCIES": ["libffi-dev"],
                            "ARCA_BACKEND_KEEP_CONTAINER_RUNNING": True,
                            "ARCA_BACKEND_USE_REGISTRY_NAME": "docker.io/naucse/naucse.python.cz",
                            "ARCA_SINGLE_PULL": True,

requirements.txt

@@ -13,7 +13,7 @@ pygments
 python-dateutil
 traitlets
 werkzeug
-arca>=0.1<0.2
+arca>=0.2  # update in .travis.yml as well, the docker extras are installed there
 cssutils
 gitpython
 click