[Haskell-cafe] Standard package file format

Tom Murphy amindfv at gmail.com
Sun Sep 18 12:03:38 UTC 2016

On Fri, Sep 16, 2016 at 4:35 PM, Imants Cekusins <imantc at gmail.com> wrote:

> > Would cabal-install need to link in all these maintained libraries
> statically? Or would there be some plug-in mechanism to load them on demand?
> well the libraries would need to be official and some with the packager.​
> the formats would be perfectly interchangeable i.e.
> cabal -> standard_type -> yaml -> standard_type -> json -> standard_type
> -> cabal
> would produce the same cabal file
> only 1 config file per package to avoid confusion
> however if the user prefers working with format F, they can always convert
> the format which came with the package, to F
Even just looking at the set of features which is 1:1 betw. YAML and JSON,
we're essentially just talking about key-value pairs with a couple of
common types for the values. This isn't all .cabal files contain (e.g. see
hvr's points about conditionals), but if it were true, is it really worth
changing how Cabal works for a diffferent color bikeshed?

On Sat, Sep 17, 2016 at 8:06 AM, Imants Cekusins <imantc at gmail.com> wrote:

> > Do I have to obtain whatever whizzy new controller you've come up with
> in order to work with your packages?
> > Do I have to do this when everyone has come up with their own whizzy new
> controller and I need to fit their packages into whatever I am trying to
> write?
>> that's the while point. If we could agree on a standard serializeable
> model, each controller would ensure the link between the *view* and the
> *model.*
> user could open a package in any IDE / environment. The environment's
> controller would display the model in its own / user preferred view.
Why not have .cabal files be the standard model, and anyone can write tools
on top to translate to/from .cabal if users really want to use something

In general, though, I don't think the fragmentation is worth it.

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