Legacy Support for GHC-Based Projects

[Sergio Had]

GHC can be cross-compiled. You do not need ppc binary. Not necessarily.
On Jan 17, 2023 22:45 +0800, Steven Smith <steve.t.smith at gmail.com>, wrote:
> A stack binary is required to build stack, and to the best of my knowledge there is no ppc stack binary: https://github.com/commercialhaskell/stack/search?q=ppc&type=. I recommend such requests be taken upstream, as there is no “fix” for PPC on our end.
>
> Back to topic, is anyone able to confirm that stack-based pandoc is working (or not) on a legacy platform also supported by stack back to Sierra?
>
> > On Jan 17, 2023, at 09:08, Sergio Had <vital.had at gmail.com> wrote:
> >
> > If PPC is fixed on our end, I will try to upstream patches, so we won’t need to carry those.
> > On Jan 17, 2023 21:47 +0800, Steven Smith <steve.t.smith at gmail.com>, wrote:
> > > To clarify, the question is how to specify that these ports use the latest stack version for builds on legacy systems. Does it work for pandoc now?
> > >
> > > stack on ppc or other very old non-supported systems will be extraordinarily fragile and time-consuming, and I expect difficult to anticipate sustained MacPorts support, especially as stack migrates to arm.
> > >
> > > > On Jan 17, 2023, at 08:39, Sergio Had <vital.had at gmail.com> wrote:
> > > >
> > > > I assume stack-based builds are still broken for PPC, as well as Intel builds on 10.6.8, but I will try to find time to work on fixing it. Ken kindly shared his work on GHC for Snow Leopard, but it is for x86 (and not in Macports).
> > > >
> > > > If anyone is good at cross-compiling, please ping me. We need to first build the latest GHC on 10.6.8 Intel and then cross-compile GHC for PPC.
> > > > On Jan 17, 2023 06:15 +0800, Steven Smith <steve.t.smith at gmail.com>, wrote:
> > > > > I recently added legacy-based support to pandoc, but I’m not sure that the code I used is working. I’ll issue a revised PR based on any feedback and use a working version for other GHC-based projects.
> > > > >
> > > > > I used this code to force stack-based builds on macOS versions that predate Apple Silicon. After Apple Silicon, we need cabal-based builds for native binaries.
> > > > >
> > > > > > set arm64_minimum_supported_major_version 20
> > > > > > if {${os.platform} eq {darwin}
> > > > > > && ${os.major} < ${arm64_minimum_supported_major_version}} {
> > > > > > # use stack to build x86_64 binaries
> > > > > > default_variants-append \
> > > > > > +stack
> > > > > > }
> > > > >
> > > > > stack-based stack builds work all the way back to Snow Leopard: https://ports.macports.org/port/stack/details/. I’d expect the same of pandoc, but it only builds back to Sierra: https://ports.macports.org/port/pandoc/details/
> > > > >
> > > > > Is anyone able to suggest profile code that will accomplish this? Is this related to the design choice to use a the port variant +stack to specify the build tool?
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