Env variables do not interpolate correctly if set with other Env vars in .env file

[bbarberBPL]

System/Project info

• OS: Ubuntu 18.04.6 LTS

• Python Version: 3.8.12

• pipenv Version: 2021.11.23

• envyaml Version: 1.9.210927

Main issue is when loading the config file with an environment variable in .env that appends or prepends an existing environment variable , such as $HOME, the prepended or appended environment variable is not interpolated. See example .env/yaml config below

• .env file

  
  MY_SOURCE_DIRECTORY="${HOME}/mapped/source/directory"

NOTE: Also tried above without quotes and without {} brackets and got the same issue

* `myconfig.yaml`

my_source_directory: "${MY_SOURCE_DIRECTORY}"

NOTE: Also tried above without quotes and without {} brackets and got the same issue

Expected:

MY_CONFIG=EnvYaml('myconfig.yaml') print(MY_CONFIG['my_source_directory']) '/home/myuser/mapped/source/directory'

Got:

MY_CONFIG=EnvYaml('myconfig.yaml') print(MY_CONFIG['my_source_directory']) '$HOME/mapped/source/directory'

ALSO GOT:

'${HOME}/mapped/source/directory'

Additionally when I load the environment variable with the `os` module I get the expected result

import os print(os.getenv('MY_SOURCE_DIRECTORY')) '/home/myuser/mapped/source/directory'

[thesimj]

hi @bbarberBPL thank you for this issue, I will dive deeper into this.

[thesimj]

this is fixed in develop branch