We are now only supporting LLVM-11 through to the new LLVM-15,
specifically, 10, which is the version present on the alpine 3_12 image
is no longer supported.

It is an optional dependency so for now, we remove it.

Ben Gamari authored Dec 22, 2022 and Ben Gamari committed Dec 23, 2022

Replacing Centos 8.

For testing s390x, ensuring that we have coverage of big-endian
platforms.

Ben Gamari authored Jul 17, 2022 and Ben Gamari committed Jul 17, 2022

It turns out that lld is pretty much the only functional linker for
ARMv7. Install it on the armv7-debian9.

No released hlint builds with GHC 9.0 so we build another image with GHC
9.0 to be used as the linters base image.

We cannot use ld.gold due to ghc#20266 yet ld.bfd is
terribly slow. Let's try lld instead.

Julian Ospald authored Oct 10, 2021 and Ben Gamari committed Oct 10, 2021

(cherry picked from commit bccff3fe)

Julian Ospald authored Oct 10, 2021 and Ben Gamari committed Oct 10, 2021

(cherry picked from commit 96594860)

HLint has rather inconvenient build dependencies which don't necessarily
build with the bootstrap compiler used for GHC builds. For instance,
currently it inexplicably fails to build with 9.0.1 on ARMv7.

Previously 26975eeb attempted to
optimise the build by unifying the `cabal update` invocations. However,
this optimisation is in fact wrong. We must run `cabal update` twice:
once as root to build the bootstrap tools and again as the ghc user
(which will be used by downstream GHC builds).

Necessary as currently yaml doesn't build against aeson-2.0

Currently pushing docker images takes an extraordinarily long time from
some runners. Work around this by excluding these runners from the pool
of runners for docker builds.

Ben Gamari authored Oct 07, 2021 and Ben Gamari committed Oct 07, 2021

As noted in ghc#20486, it is currently not possible to bootstrap
GHC with a bootstrap compiler linked against integer-simple.

We don't need it. We just pull the dependencies directly.

This is needed for term.h, which terminfo now requires.