> Why is it configured in YAML? When I tried to make a similar library, I thought it was a monadic DSL in Haskell that matches the need best.
> I'm interested in the reason!

Hey Yuji,

The reason I picked JSON/YAML to declare the spec to be able to re-implement it in other languages we use at my current work, so the abstraction is shared among many different languages. There could be a potential to have a Builder DSL in Haskell to create the ConfigSpec record, however this puts your app config on codeland rather than dataland which may remove some flexibility.

Thanks for the feedback, and hope you find the library useful.

On Thu, Apr 6, 2017 at 5:28 PM Yuji Yamamoto <whosekiteneverfly@gmail.com> wrote:
Awesome!
This may be the one I've wanted for a long time.
As you I've often felt it's very tedious to manage the source of configurations (from the file? CLI argument? etc.).

I'm going to read it in detail later, but I have one question after the first look:
Why is it configured in YAML? When I tried to make a similar library, I thought it was a monadic DSL in Haskell that matches the need best.
I'm interested in the reason!

Thanks for the interesting library!

2017/04/07 午前3:56 "Román González" <romanandreg@gmail.com>:
Is my pleasure to announce a new library for managing configuration values on Haskell projects.

Some features:

* Have a versioned spec of all values your application can accept

* Provides an API for gathering values from multiple sources (files, overwrite files, cli arguments, environment variables) and then composing them into a single configuration map

* Gives a sane precedence over sources of the configuration value sources

* Provides inspection utilities to understand why the configuration is the way it is

* Provides an API that abstracts away the source of configuration values and allows easy casting into record types your application or other libraries understand

* Supports both configuration files in JSON or YAML (when cabal flags are used)

* Dynamically generates CLI inputs from spec configuration file

Any feedback, or comments feel free to create a ticket or send me a tweet over at @romanandreg

Cheers.

Roman Gonzalez.-

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