[Haskell-cafe] Offline compilation with Stack/Cabal

[Jan von Löwenstein]

Thanks for all the responses.

@Ivan
I couldn't yet find an option in stack to point to local source tarballs.
Custom snapshots at least currently only support Hackage packages and that
was the closest I found.

I briefly looked into `stack unpack <package>`, that might indeed provide a
workable solution. Although options other than the list of packages would
have to be duplicated between my "normal" stack.yaml and the one I use to
enable offline compilation.

@Tobias
I already thought about that, yackage sounds like a package that would help
implement it. Not sure if I like that option very much though.

@David
Not sure if I get your proposal.
Running `stack build --prefetch --dry-run` lists my local packages as
"Would build". How would I get source tarballs of my dependencies and how
would I build them on an offline machine?

Best
Jan

David Turner <dct25-561bs at mythic-beasts.com> schrieb am Do., 24. Nov. 2016
um 10:13 Uhr:

> Hi,
>
> Does
>
>     stack build --prefetch --dry-run
>
> get close to what you want? That seems to download all the necessary
> packages, and by using stack you get the ability to share compiled
> dependencies between packages.
>
> Cheers,
>
> David
>
> On 24 November 2016 at 06:57, Jan von Löwenstein <
> jan.loewenstein at gmail.com> wrote:
>
> Hi,
>
> Consider the following use case:
> I have to ship a Haskell application as source, bundled with its
> dependencies and a script that can produce the binary on a machine without
> internet connectivity.
>
> Is that possible with Stack or Cabal?
> Any pointers would be much appreciated.
>
> Ideally I would like to build each dependency package individually. That
> way I could cache results per Haskell package and don't need to rebuild
> dependencies until they actually change.
>
> Best
> Jan
>
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