diff --git a/nix-develop-gha.sh b/nix-develop-gha.sh
index 3c18193..eaaea0a 100755
--- a/nix-develop-gha.sh
+++ b/nix-develop-gha.sh
@@ -12,8 +12,7 @@ contains() {
 envOutput=
 
 # Iterate over the output of `env -0` in the shell environment
-while IFS='=' read -r -d '' n v || exit "$n"
-do
+while IFS='=' read -r -d '' n v; do
 	# If this variable is empty then we're in the first loop, and $n is the
 	# output of the shellHook _before_ `env` is run.
 	if ! [ "$envOutput" ]; then
@@ -69,4 +68,4 @@ do
 	fi
 	# Add all environment variables except for PATH to GITHUB_ENV.
 	printf "%s=%s\n" "$n" "$v" >>"${GITHUB_ENV:-/dev/stderr}"
-done < <(set +e; nix develop "${arguments[@]}" --command bash -c "echo -ne '\0'; env -0"; printf '%s' "$?")
+done < <(nix develop "${arguments[@]}" --command bash -c "echo -ne '\0'; env -0")