Rename PINCH_ME_IM_SILLY to ALLOW_PREEXISTING_INSTALLATION

scripts/install-darwin-multi-user.sh

@@ -417,8 +417,8 @@ setup_report() {
     row "     Build Users" "$NIX_USER_COUNT"
     row "  Build Group ID" "$NIX_BUILD_GROUP_ID"
     row "Build Group Name" "$NIX_BUILD_GROUP_NAME"
-    if [ "${PINCH_ME_IM_SILLY:-}" != "" ]; then
-        row "       Silliness" "Very Silly"
+    if [ "${ALLOW_PREEXISTING_INSTALLATION:-}" != "" ]; then
+        row "Preexisting Install" "Allowed"
     fi
 
     subheader "build users:"
@@ -777,7 +777,7 @@ main() {
     welcome_to_nix
     chat_about_sudo
 
-    if [ "${PINCH_ME_IM_SILLY:-}" = "" ]; then
+    if [ "${ALLOW_PREEXISTING_INSTALLATION:-}" = "" ]; then
         validate_starting_assumptions
     fi
 

tests/install-darwin.sh

@@ -88,7 +88,7 @@ verify
 
     sudo mkdir -p /nix/store
     sudo touch /nix/store/.silly-hint
-    echo -n "" | PINCH_ME_IM_SILLY=true ./install
+    echo -n "" | ALLOW_PREEXISTING_INSTALLATION=true ./install
     verify
     test -e /nix/store/.silly-hint