setup.sh: shellcheck disable=SC1090

https://github.com/koalaman/shellcheck/wiki/SC1090

pkgs/stdenv/generic/setup.sh

@@ -70,6 +70,7 @@ _callImplicitHook() {
     if declare -F "$hookName" > /dev/null; then
         "$hookName"
     elif test -e "$hookName" ; then
+        # shellcheck disable=SC1090
         source "$hookName"
     elif [ -n "${!hookName:-}" ]; then
         eval "${!hookName}"
@@ -484,6 +485,7 @@ activatePackage() {
     (( "$hostOffset" <= "$targetOffset" )) || exit 1
 
     if [ -f "$pkg" ]; then
+        # shellcheck disable=SC1090
         source "$pkg"
     fi
 
@@ -1287,6 +1289,7 @@ showPhaseHeader() {
 
 genericBuild() {
     if [ -f "${buildCommandPath:-}" ]; then
+        # shellcheck disable=SC1090
         source "$buildCommandPath"
         return
     fi