Thanks, Jack. It sounds like a great Rackety solution and easy way to
get into trying my own languages. I've already started work, though, and
the 40 lines of code I've written looks like it'll do the job once I
shake out the bugs.
On Sun, Aug 27, 2017, at 05:49 PM, Jack Firth wrote:
> On Sunday, August 27, 2017 at 11:01:17 AM UTC-7, Royall Spence wrote:
> > I'm starting work on a Racket library for loading .env files to override
> > environment variables. This is a common way of doing things for people who
> > want to run multiple web applications on a single server without their
> > environment variables competing for namespace. The classic example is this
> > Ruby library: https://github.com/bkeepers/dotenv
> > Just checking to make sure I haven't overlooked an already existing library
> > that provides this behavior. Should I keep going?
> There is the Envy library for parsing environment variables, but there
> doesn't seem to be anything for loading .env files. Personally, I think
> this would be a great place to make a #lang that worked something like
> #lang dotenv
> my-library-num-workers = 5
> my-library-tmpdir = "/tmp/my_library"
> ... and then if you `require` it, it sets the current environment. Or
> maybe it gives you a function to execute a thunk with the new
> environment. The advantage to using a #lang here instead of a file is
> your dotenv file is you no longer need to do any parsing or file IO at
> runtime and your env file is just a normal code module imported like any
> other. Plus you could write a syntax highlighter to make it easy to edit
> the env files in DrRacket.
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