From 1e628422a36a02c45d78a6933a5e0c7e654b004d Mon Sep 17 00:00:00 2001
From: Julian Ospald <hasufell@posteo.de>
Date: Mon, 10 Oct 2022 13:18:09 +0800
Subject: [PATCH] Don't install stack install hook

See https://github.com/commercialhaskell/stack/issues/5895

Stack feature is documented here:
  https://docs.haskellstack.org/en/stable/yaml_configuration/#ghc-installation-customisation

It's recommended, but probably too unexpected for CI.
It means stack will not install GHC on its own, but through GHCup.
---
 images/linux/scripts/installers/haskell.sh   | 1 +
 images/linux/scripts/tests/Haskell.Tests.ps1 | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/images/linux/scripts/installers/haskell.sh b/images/linux/scripts/installers/haskell.sh
index 702841e6..8d11b5df 100644
--- a/images/linux/scripts/installers/haskell.sh
+++ b/images/linux/scripts/installers/haskell.sh
@@ -9,6 +9,7 @@ source $HELPER_SCRIPTS/etc-environment.sh
 
 # Any nonzero value for noninteractive installation
 export BOOTSTRAP_HASKELL_NONINTERACTIVE=1
+export BOOTSTRAP_HASKELL_INSTALL_NO_STACK_HOOK=1
 export GHCUP_INSTALL_BASE_PREFIX=/usr/local
 export BOOTSTRAP_HASKELL_GHC_VERSION=0
 ghcup_bin=$GHCUP_INSTALL_BASE_PREFIX/.ghcup/bin
diff --git a/images/linux/scripts/tests/Haskell.Tests.ps1 b/images/linux/scripts/tests/Haskell.Tests.ps1
index 21706bd8..af05f983 100644
--- a/images/linux/scripts/tests/Haskell.Tests.ps1
+++ b/images/linux/scripts/tests/Haskell.Tests.ps1
@@ -31,4 +31,8 @@ Describe "Haskell" {
     It "Stack" {
         "stack --version" | Should -ReturnZeroExitCode
     }
+
+    It "Stack hook is not installed" {
+        "$HOME/.stack/hooks/ghc-install.sh" | Should -Not -Exist
+    }
 }