This pr is meant to replace https://github.com/nrwl/nx/pull/22585 and
https://github.com/nrwl/nx/pull/20524
Env variables using other variables were not unloaded from the
environment and further customizations were impossible in more specific
env files.
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## Current Behavior
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## Expected Behavior
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## Related Issue(s)
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Fixes https://github.com/nrwl/nx/issues/23581
Co-authored-by: Mateo Tibaquira <nestormateo@gmail.com>
88fd03be3b