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macports / upt-macports

The Universal Packaging Tool (upt) backend for MacPorts
https://framagit.org/upt/upt
BSD 3-Clause "New" or "Revised" License
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Hackage dependency issues #53

Open Korusuke opened 5 years ago

Korusuke commented 5 years ago

Firstly there are a few packages that are not present upstream but even then declared as dependencies so that should not be added by upt-hackage itself. Example: unbuildable, invalid-cabal-flag-settings, etc.. Do we agree on this? ping @Steap

Then there are ports which are present in hackage but we might not want to mention as dependencies ever like bytestring, unix, win-32, base, etc.. so can we comeup with list of such ports and filter them out and I guess all hackage packages would require ghc....not sure about all this.

ping @mojca @essandess

essandess commented 5 years ago

@Korusuke

I guess all hackage packages would require ghc....not sure about all this.

Not necessarily. They could also require cabal (https://github.com/macports/macports-ports/pull/4715) or stack (https://github.com/macports/macports-ports/pull/4633), which will take care of downloading whatever ghc version is specified in cabal.yaml or stack.yaml.

Steap commented 5 years ago

Firstly there are a few packages that are not present upstream but even then declared as dependencies so that should not be added by upt-hackage itself. Example: unbuildable, invalid-cabal-flag-settings, etc.. Do we agree on this? ping @Steap

Why are these dependencies specified? How are they resolved when Haskell tooling needs them?

Korusuke commented 5 years ago

Why are these dependencies specified? How are they resolved when Haskell tooling needs them?

I am not really sure about this as I have no experience with haskell or hackage but from what I found, invalid-cabal-flag-settings is declared when package doesn't declare flags for base. reference.

unbuildable as per it's cabal file is used to "express impossible build configurations" and from what I notice is used most times to say that the package cannot be build on windows.

Korusuke commented 5 years ago

So how should we proceed with this?