Any plan to support embedded variables?

[sylvainletourneau]

I was wondering if there has been discussions/plans to support embedded variables in .env file. For example,

# .env file with embedded variables
LIB_PATH=/home/username/.lib
GDAL_LIBRARY_PATH=${LIB_PATH}/osgeo/gdal304.dll
GEOS_LIBRARY_PATH=${LIB_PATH}/osgeo/geos_c.dll

I got used to the ${VAR_NAME} syntax as it is supported by docker-compose and python-dotenv among others. It would be great to get the same support in django-environ. I'm aware of the interpolate feature which covers a more limited use case.

Would that be useful to anyone else?

[sylvainletourneau]

The link provided refers to the proxy feature.  This feature allows us to associate a specific value to various variable names.  I'm looking for a more generic solution in which the variable definition can include one or more other variables along with additional text.   This would allow us to re-use the content of one or more variables to create a new variable, while the current implementation only allow us to duplicate a variable. # Current proxy feature VAR_1=bar VAR_2=$VAR_1 VAR_3=$VAR_1 # Desired feature VAR_1=prod VAR_2=my_app_name APP_ROOT_DIR=/opt/${VAR_1}/${VAR_2}    # /opt/prod/my_app_name APP_LIB_DIR=/opt/${VAR_1}/${VAR_2}/lib   # /opt/prod/my_app_name/lib

…

---- On Tue, 11 Oct 2022 03:20:41 -0400 Florian Demmer ***@***.***> wrote --- This is already supported, but with different synthax: https://django-environ.readthedocs.io/en/latest/tips.html?highlight=proxy#proxy-value Although it might not work as expected, there were a number of issues discussing it: https://github.com/joke2k/django-environ/issues?q=is%3Aissue+proxy+is%3Aclosed and an open one: #415 — Reply to this email directly, #421 (comment), or https://github.com/notifications/unsubscribe-auth/AHDKPRZBMICWLDYH3ABDPVDWCUIMTANCNFSM6AAAAAAQ7PNFME. You are receiving this because you authored the thread.