This was already applied to GHC 9.2.x, but was not copied to GHC 9.4.x.
I have had issues with this locally.
The same patch works for both Cabal 3.6 and 3.8, so we can just reuse it.
The main problem was GHC exceeding the Hydra output limit with profiling
libs on aarch64-linux which made us disable the feature. Nowadays the
limit is 3GB, the GHC output is a bit over 2GB, so easily under the
limit.
aarch64-darwin uses a different codegen backend and was never really
affected by the problem: Its output with profiling enabled is around
1.6GB.
Consequently we can enable profiling for all platforms again, as we have
no output size issues for those we build on Hydra.
Thanks to flokli for helping me track down these up to date numbers.
gmp is part of buildInputs _and_ depsTargetTarget, so we need to check
the host and target platform to be correct. In practice this doesn't
change much though, as gmp.meta.platforms is _quite_ liberal.
Initial port of our GHC Nix expressions to the new hadrian build system,
as it has become required after 9.4. Unfortunately there are some
regressions affecting us, namely the inability to install a GHC
cross-compiler at the moment (see issue linked in relevant error
message). This means that a lot of specific configuration snippets for
cross-platforms and static compilation have been ported from make
speculatively, as we are unable to test them for the moment.
