Pulp

For pulp-2to3-migration it was needed to add pulp_file as a dependency:

# For pulpcore, and any other repo that might check out a pulp-certguard PR
if [ -e $TRAVIS_BUILD_DIR/../pulp-certguard ]; then
  PULP_CERTGUARD=./pulp-certguard
else
  # Otherwise, master branch release
  PULP_CERTGUARD=git+https://github.com/pulp/pulp-certguard.git
fi

if [ -e $TRAVIS_BUILD_DIR/../pulp_file ]; then
  PULP_FILE=./pulp_file
else
  # Otherwise, master branch release
  PULP_FILE=git+https://github.com/pulp/pulp_file.git
fi

cat > vars/vars.yaml << VARSYAML
---
images:
  - ${PLUGIN}-${TAG}:
      image_name: $PLUGIN
      tag: $TAG
      pulpcore: ./pulpcore
      pulpcore_plugin: ./pulpcore-plugin
      plugins:
        - $PULP_CERTGUARD
        - $PULP_FILE
        - ./$PLUGIN
VARSYAML

https://github.com/pulp/pulp-2to3-migration/pull/22/files#diff-60f45dbdd96bd53a91fbbadd0b05b43aR59-R78