fix #5153

Author: bobzhang

jscomp/bsb/bsb_ninja_regen.ml

@@ -56,6 +56,7 @@ let regenerate_ninja
       "@{<info>BSB check@} build spec : %a @." Bsb_ninja_check.pp_check_result check_result;
     if check_result = Bsb_bsc_version_mismatch then begin 
       Bsb_log.warn "@{<info>Different compiler version@}: clean current repo@.";
+      Bsb_clean.clean_bs_deps per_proj_dir;
       Bsb_clean.clean_self  per_proj_dir; 
     end ; 
 

lib/4.06.1/rescript.ml

@@ -14175,6 +14175,7 @@ let regenerate_ninja
       "@{<info>BSB check@} build spec : %a @." Bsb_ninja_check.pp_check_result check_result;
     if check_result = Bsb_bsc_version_mismatch then begin 
       Bsb_log.warn "@{<info>Different compiler version@}: clean current repo@.";
+      Bsb_clean.clean_bs_deps per_proj_dir;
       Bsb_clean.clean_self  per_proj_dir; 
     end ;