#10399 Consider allowing reading from environment variables in `pants.toml` Issue created by Eric-Arellano We currently allow you to read from environment variables when using command line flags and env variables thanks to the affordances of the shell. But, we don't let you read from them in config files. It wouldn't be very difficult to support reading environment variables. We could reuse the interpolation syntax used for default values, e.g.

%(foo)s

. Possibly, we could distinguish it a little via something like

$()s

. Now that we only use TOML, we have lots of flexibility to implement interpolation how we want. pantsbuild/pants