From bc00d0f342778a23180e78a5a5cbf1cb63cad02d Mon Sep 17 00:00:00 2001
From: Jens Petersen <juhpetersen@gmail.com>
Date: Sun, 13 Jun 2021 17:45:54 +0800
Subject: [PATCH] revert Nightly from 8.10.5 to 8.10.4 due to doctest fallout

This reverts commit 764f40c2f555acd0fe0582192ee3a1a33e29ae3e

See https://gitlab.haskell.org/ghc/ghc/-/issues/19763
about the missing RTS symbol
---
 Dockerfile             | 2 +-
 build-constraints.yaml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 145ad54b..b330e2ac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM fpco/pid1:18.04
 
 ENV HOME /home/stackage
 ENV LANG en_US.UTF-8
-ENV GHCVER 8.10.5
+ENV GHCVER 8.10.4
 
 # NOTE: also update debian-bootstrap.sh when cuda version changes
 ENV PATH /home/stackage/.stack/programs/x86_64-linux/ghc-$GHCVER/bin:/usr/local/cuda-10.0/bin:/usr/sbin:/usr/bin:/sbin:/bin
diff --git a/build-constraints.yaml b/build-constraints.yaml
index db206e7b..8bb8ae6a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1,6 +1,6 @@
 ghc-major-version: "8.10"
 # new curator is supposed to use exact GHC version
-ghc-version: "8.10.5"
+ghc-version: "8.10.4"
 
 # This affects which version of the Cabal file format we allow. We
 # should ensure that this is always no greater than the version