[MacPorts] #68957: Cabal fails to build on MacOS 10.15

[MacPorts]

#68957: Cabal fails to build on MacOS 10.15
---------------------+--------------------
 Reporter:  Gandoon  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.8.1
 Keywords:           |       Port:  cabal
---------------------+--------------------
 The cabal port fails to build the upgrade to @3.10.2.0_0 from @3.10.1.0_0
 that built successfully 15/3 2023. System in question is MacOS 10.15.7 and
 it fails with complaints regarding:

 {{{
 Failed to build ed25519-0.0.5.0.
 Build log (
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_cabal/cabal/work/.home/.cabal/logs/ghc-9.6.3/d25519-0.0.5.0-6c355779.log
 ):
 Configuring library for ed25519-0.0.5.0..
 Preprocessing library for ed25519-0.0.5.0..
 Building library for ed25519-0.0.5.0..
 [1 of 1] Compiling Crypto.Sign.Ed25519 ( src/Crypto/Sign/Ed25519.hs,
 dist/build/Crypto/Sign/Ed25519.o, dist/build/Crypto/Sign/Ed25519.dyn_o )

 <no location info>: error:
     Failed to load interface for ‘Language.Haskell.TH.Syntax’
 There are files missing in the ‘template-haskell’ package,
 try running 'ghc-pkg check'.
 Use -v (or `:set -v` in ghci) to see a list of the files searched for.

 Failed to build safe-exceptions-0.1.7.4.
 Build log (
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_cabal/cabal/work/.home/.cabal/logs/ghc-9.6.3
 /sf-xcptns-0.1.7.4-3c00444b.log
 ):
 Configuring library for safe-exceptions-0.1.7.4..
 Preprocessing library for safe-exceptions-0.1.7.4..
 Building library for safe-exceptions-0.1.7.4..
 [1 of 1] Compiling Control.Exception.Safe ( src/Control/Exception/Safe.hs,
 dist/build/Control/Exception/Safe.o,
 dist/build/Control/Exception/Safe.dyn_o )

 <no location info>: error:
     Failed to load interface for ‘Language.Haskell.TH.Syntax’
 There are files missing in the ‘template-haskell’ package,
 try running 'ghc-pkg check'.
 Use -v (or `:set -v` in ghci) to see a list of the files searched for.
 Error: cabal-prebuilt: Failed to build Cabal-syntax-3.10.2.0 (which is
 required by exe:cabal from cabal-install-3.10.2.0).
 Failed to build documentation for base64-bytestring-1.2.1.0 (which is
 required
 by exe:cabal from cabal-install-3.10.2.0).
 Failed to build documentation for cryptohash-sha256-0.11.102.1 (which is
 required by exe:cabal from cabal-install-3.10.2.0).
 Failed to build ed25519-0.0.5.0 (which is required by exe:cabal from
 cabal-install-3.10.2.0). See the build log above for details.
 Failed to build documentation for hashable-1.4.3.0 (which is required by
 exe:cabal from cabal-install-3.10.2.0).
 Failed to build documentation for regex-base-0.94.0.2 (which is required
 by
 exe:cabal from cabal-install-3.10.2.0).
 Failed to build safe-exceptions-0.1.7.4 (which is required by exe:cabal
 from
 cabal-install-3.10.2.0). See the build log above for details.
 }}}
 I am currently unsure how to proceed. It may come down to a missing
 dependency, but at this time I have yet to figure out if that is the case
 and if the problem can be easily solved by installing any additional
 ports. Nevertheless, if it indeed is a simple missing dependency it is
 still worth the effort to start a ticket for now so it can be fixed.

-- 
Ticket URL: <https://trac.macports.org/ticket/68957>
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