diff --git a/bin/install b/bin/install
index 6aa2ef5..a0f92ee 100755
--- a/bin/install
+++ b/bin/install
@@ -2,13 +2,8 @@
 
 set -euo pipefail
 
-check_ghcup() {
-  if ! command -v ghcup &> /dev/null
-  then
-    echo "ghcup not found, installing..."
-    curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-  fi
-}
+# shellcheck source=../lib/utils.sh
+source "$(dirname "$0")/../lib/utils.sh"
 
 ver() {
   echo "${1}" | awk -F . '{ printf("%02d%02d", $1,$2); }'
diff --git a/bin/list-all b/bin/list-all
index dc82d80..8861179 100755
--- a/bin/list-all
+++ b/bin/list-all
@@ -2,13 +2,8 @@
 
 set -euo pipefail
 
-check_ghcup() {
-  if ! command -v ghcup &> /dev/null
-  then
-    echo "ghcup not found, installing..."
-    curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-  fi
-}
+# shellcheck source=../lib/utils.sh
+source "$(dirname "$0")/../lib/utils.sh"
 
 main() {
   check_ghcup
diff --git a/lib/utils.sh b/lib/utils.sh
new file mode 100644
index 0000000..9ab2046
--- /dev/null
+++ b/lib/utils.sh
@@ -0,0 +1,7 @@
+check_ghcup() {
+  if ! command -v ghcup &> /dev/null
+  then
+    echo "GHCup not found, installing..."
+    curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | env BOOTSTRAP_HASKELL_NONINTERACTIVE=1 sh
+  fi
+}