The statically-linked Haskell packages on Darwin are not currently
working because libiconv is not building statically on Darwin.
The statically-linked Haskell packages on aarch64 are timing out on Hydra.
Since the agda compiler is updated via haskellPackages.Agda, we are
quite likely to cause regressions in agdaPackages when the language is
changed via compiler updates. Thus we should build agdaPackages (which
is very small) as part of the haskell-updates jobset and track if
basic agda functionality (compiler and standard library) is working.
Since the rust writer doesn't seem to get fixed on darwin, we'll just
wrap the haskell writer test in our own derivation (which is possible
since tests.writers exposes a bunch of internals via passthru) and
expose it via tests.haskell which are already in mergeable.
Finally a way to test the (hopefully) working haskell writer on darwin
again!
Since libiconv doesn't build in pkgsStatic on darwin, having these
builds in our aggregate jobset are just gonna make it fail due to reason
not really in scope for our jobset here.
This way we can keep track of any new regressions to this as well as
have some binary cache, so using this infrastructure doesn't require
compiling GHC all the time.
We have different attribute sets defining jobs: The list of base jobs,
the ones generated by versionedCompilerJobs and our added aggregate
jobs. During this we define `haskell` twice: Once for `haskell.compiler`
and once for `haskell.packages.*`. The `//` operator throws a way the
former which is fixed by using lib.recursiveUpdate.
Unfortunately makes the expression less pretty, but at least we have our
compiler jobs back.
top-level/release.nix builds haskellPackages on those systems as well,
so we should test on them as well. Currently we have virtually no
insight into the state on there.
These should now also include all packages that use haskellPackages in
some form where it is apparent from all-packages.nix.
Some of those probably could do with a cleanup (maybe fetchable from
hackage, many are missing justStaticExecutables).
release-haskell.nix is intended to be a replacement for
https://github.com/peti/ci/blob/master/haskell-nixpkgs.nix
which is currently the main expression for the haskell-updates jobset
on hydra (in the nixpkgs project).
It has the same jobs as the old haskell-nixpkgs.nix file:
* haskellPackages.*
* haskell.compiler.*
* Some extra haskell packages for certain compilers
The following jobs are new:
* tests.haskell.*
* A manually maintained list of top-level haskell packages (most of them
using justStaticExecutables)
* An aggregate job which is intended to aid merging the haskell-updates
branch: It holds an arbitrary list of haskell-related packages and
tests we intend have working at all times. This is still somewhat
incomplete and should be extendend in the future.
Additionally a lot of refactoring has been done and some unnecessary
code has been eliminated. Due to the increased set of jobs and my
ideas of convenience however, the code size has grown overall.
I've tried document the individual parts and would be happy about
feedback in general.
One future improvement could be making adding top-level haskell packages
more convenient and adding them all to the aggregate job automatically.
