test(e2e): preserve runtime contracts in fake xlings

Author: speak-agent

tests/e2e/52_local_path_namespaced_index.sh

@@ -9,6 +9,11 @@ trap "rm -rf $TMP" EXIT
 
 export MCPP_HOME="$TMP/mcpp-home"
 source "$(dirname "$0")/_inherit_toolchain.sh"
+SUBOS_INFO_SEED="$MCPP_HOME/registry/subos/default/.xlings.json"
+[[ -f "$SUBOS_INFO_SEED" ]] || {
+    echo "FAIL: inherited toolchain has no default SubOS runtime contract"
+    exit 1
+}
 
 INDEX_DIR="$TMP/local-index"
 mkdir -p "$INDEX_DIR/pkgs/c"
@@ -113,7 +118,8 @@ set -e
 
 if [[ "${1:-}" == "self" && "${2:-}" == "init" ]]; then
     mkdir -p "${XLINGS_HOME:?}/subos/default"
-    printf '{}\n' > "$XLINGS_HOME/subos/default/.xlings.json"
+    cp "${FAKE_XLINGS_SUBOS_INFO:?}" \
+       "$XLINGS_HOME/subos/default/.xlings.json"
     exit 0
 fi
 
@@ -222,6 +228,7 @@ UPDATE_LOG="$TMP/fake-xlings-update.log"
 if ! FAKE_XLINGS_LOG="$FAKE_LOG" \
      FAKE_XLINGS_DIRECT_LOG="$FAKE_DIRECT_LOG" \
      FAKE_XLINGS_UPDATE_LOG="$UPDATE_LOG" \
+     FAKE_XLINGS_SUBOS_INFO="$SUBOS_INFO_SEED" \
      "$MCPP" build > fetch.log 2>&1; then
     echo "FAIL: clean local path dependency install failed"
     cat fetch.log

tests/e2e/58_preinstall_mcpp_deps_for_hooks.sh

@@ -10,6 +10,11 @@ trap "rm -rf $TMP" EXIT
 
 export MCPP_HOME="$TMP/mcpp-home"
 source "$(dirname "$0")/_inherit_toolchain.sh"
+SUBOS_INFO_SEED="$MCPP_HOME/registry/subos/default/.xlings.json"
+[[ -f "$SUBOS_INFO_SEED" ]] || {
+    echo "FAIL: inherited toolchain has no default SubOS runtime contract"
+    exit 1
+}
 
 INDEX_DIR="$TMP/local-index"
 mkdir -p "$INDEX_DIR/pkgs/c"
@@ -84,7 +89,8 @@ set -e
 
 if [[ "${1:-}" == "self" && "${2:-}" == "init" ]]; then
     mkdir -p "${XLINGS_HOME:?}/subos/default"
-    printf '{}\n' > "$XLINGS_HOME/subos/default/.xlings.json"
+    cp "${FAKE_XLINGS_SUBOS_INFO:?}" \
+       "$XLINGS_HOME/subos/default/.xlings.json"
     exit 0
 fi
 
@@ -198,6 +204,7 @@ EOF
 
 if ! FAKE_XLINGS_LOG="$FAKE_LOG" \
      FAKE_XLINGS_DIRECT_LOG="$FAKE_DIRECT_LOG" \
+     FAKE_XLINGS_SUBOS_INFO="$SUBOS_INFO_SEED" \
      "$MCPP" build > build.log 2>&1; then
     cat build.log
     exit 1