1 files changed, 4 insertions, 2 deletions
diff --git a/hadrian/build-stack b/hadrian/build-stack
index 7a45042ebd..da069e3575 100755
--- a/hadrian/build-stack
+++ b/hadrian/build-stack
@@ -3,11 +3,13 @@
 # Make sure that the script exits if Hadrian fails to build
 set -euo pipefail
 
+STACK="${STACK:-stack}"
+
 # Make sure Hadrian is up-to-date
 cd hadrian
-stack build --no-library-profiling ${HADRIAN_NIX:+--nix}
+$STACK build --no-library-profiling ${HADRIAN_NIX:+--nix}
 
 # Run Hadrian in the top-level GHC directory
-stack exec hadrian -- \
+$STACK exec hadrian -- \
     --directory ".."  \
     "$@"