Re: Unable to build pandoc on M1 Mac

[John MacFarlane <fiddlosopher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

This is due to the recent fork of cryptonite -> crypton.

The cure, for now, is to add this to cabal.project:

constraints: tls < 1.7

Hopefully downstream packages will be updated soon and we can remove the constraint.


> On Jun 7, 2023, at 2:40 AM, krulis....-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <krulis.tomas.tk@gmail.com> wrote:
> 
> Dear pandoc mailing list,
> 
> I seem to be unable to build pandoc on a M1 MacOS.
> 
> I have setup haskell with `ghcup`, tried all permutations of:
> 
> cabal versions: 3.6.2.0 ; 3.8.1.0 ; 3.10.1.0
> ghc versions: 9.2.8 ; 9.4.4 ; 9.6.1
> 
> I am always getting the same error:
> 
> ```
> Warning: connection.cabal:26:36: version operators used. To use version
> operators the package needs to specify at least 'cabal-version: >= 1.8'.
> Configuring connection-0.3.1...
> Preprocessing library for connection-0.3.1..
> Building library for connection-0.3.1..
> [1 of 2] Compiling Network.Connection.Types ( Network/Connection/Types.hs, dist/build/Network/Connection/Types.o, dist/build/Network/Connection/Types.dyn_o )
> [2 of 2] Compiling Network.Connection ( Network/Connection.hs, dist/build/Network/Connection.o, dist/build/Network/Connection.dyn_o )
> 
> Network/Connection.hs:122:43: error:
>     • Couldn't match expected type ‘crypton-x509-store-1.6.9:Data.X509.CertificateStore.CertificateStore’
>                   with actual type ‘Data.X509.CertificateStore.CertificateStore’
>       NB: ‘crypton-x509-store-1.6.9:Data.X509.CertificateStore.CertificateStore’
>             is defined in ‘Data.X509.CertificateStore’
>                 in package ‘crypton-x509-store-1.6.9’
>           ‘Data.X509.CertificateStore.CertificateStore’
>             is defined in ‘Data.X509.CertificateStore’
>                 in package ‘x509-store-1.6.9’
>     • In the ‘sharedCAStore’ field of a record
>       In the ‘clientShared’ field of a record
>       In the expression:
>         (TLS.defaultParamsClient (fst cid) portString)
>           {TLS.clientSupported = def
>                                    {TLS.supportedCiphers = TLS.ciphersuite_default},
>            TLS.clientShared = def
>                                 {TLS.sharedCAStore = globalCertificateStore cg,
>                                  TLS.sharedValidationCache = validationCache}}
>     |
> 122 |             { TLS.sharedCAStore         = globalCertificateStore cg
>     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^
> cabal: Failed to build connection-0.3.1 (which is required by exe:pandoc from
> pandoc-cli-0.1.1). See the build log above for details.
> ```
> 
> It seems to me that with `ghcup`, `cabal` is not picking the right versions of the toolchain.
> 
> How can I fix that? or should I install `pandoc` with `stack`?
> 
> I know that I can install `pandoc` on Mac with `brew`, but so far, installing `pandoc` with `cabal` always worked for me.
> 
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