[GHC-Releases] GHC 9.14 status

Ben Gamari ben at well-typed.com
Mon Aug 11 15:54:02 UTC 2025


Hi all,

A brief update on the GHC 9.14 release status. As noted last time, the
release process has been held up by a few significant bodies of on-going
work:

- the upgrade of the Windows toolchain which has revealed a number of
  linking issues,

- enabling support for LLVM 20 (#26267), along with the resolution of
  a few correctness issues which were uncovered in the process (#26109)

- the resolution to #23109, a rather invasive correctness fix which we
  want to ensure is adequately tested prior to the release,

At this point we have resolved, or are close to resolving, all of these
issues. We expect that #23109 will land today, with the resolution to
#26109 hopefully landing shortly thereafter.

One wrinkle here is a late request for a boot library bump (#26268)
which has had a number of knock-on effects. We are still trying to
land this in `master`; we tentatively plan to backport but given how
the state of the release process we will not delay the release if things
do not go smoothly.

Once the above has happened we will backport to `ghc-9.14` and begin
preparation of the first alpha release. This may happen as soon as
Thursday.

Cheers,

- Ben


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