diff -Nru gringo-5.3.0/debian/changelog gringo-5.3.0/debian/changelog
--- gringo-5.3.0/debian/changelog	2020-03-12 00:57:01.000000000 +0000
+++ gringo-5.3.0/debian/changelog	2020-03-29 05:17:25.000000000 +0000
@@ -1,3 +1,10 @@
+gringo (5.3.0-13+rpi1) bullseye-staging; urgency=medium
+
+  [changes brought forward from 5.3.0-10+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Thu, 14 Mar 2019 17:34:56 +0000]
+  * Update symbols for raspbian.
+
+ -- Peter Michael Green <plugwash@raspbian.org>  Sun, 29 Mar 2020 05:17:25 +0000
+
 gringo (5.3.0-13) unstable; urgency=medium
 
   * Upload to unstable
diff -Nru gringo-5.3.0/debian/symbols gringo-5.3.0/debian/symbols
--- gringo-5.3.0/debian/symbols	2020-03-12 00:55:58.000000000 +0000
+++ gringo-5.3.0/debian/symbols	2020-03-29 05:17:25.000000000 +0000
@@ -186,26 +186,26 @@
  _ZTINSt6thread11_State_implINS_8_InvokerISt5tupleIJSt10mem_fun1_tIvN5Clasp11ClaspFacade13SolveStrategyENS4_11SolveMode_tEEPNS6_5AsyncENS7_1EEEEEEEE@Base 1
  _ZTINSt6thread11_State_implINS_8_InvokerISt5tupleIJSt10mem_fun1_tIvN5Clasp2mt13ParallelSolveEjEPS6_jEEEEEE@Base 1
  (arch=armel riscv64)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 1
- (arch=!armel !riscv64)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
  (arch=armel riscv64)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 1
- (arch=!armel !riscv64)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
  (arch=armel armhf)_ZTISt19_Sp_make_shared_tag@Base 5.3.0-5~
  (arch=armel riscv64)_ZTISt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE1EE@Base 1
- (arch=!armel !riscv64)_ZTISt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE2EE@Base 1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTISt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE2EE@Base 1
  (arch=armel riscv64)_ZTSN9__gnu_cxx7__mutexE@Base 1
  _ZTSNSt6thread11_State_implINS_8_InvokerISt5tupleIJSt10mem_fun1_tIvN5Clasp11ClaspFacade13SolveStrategyENS4_11SolveMode_tEEPNS6_5AsyncENS7_1EEEEEEEE@Base 1
  _ZTSNSt6thread11_State_implINS_8_InvokerISt5tupleIJSt10mem_fun1_tIvN5Clasp2mt13ParallelSolveEjEPS6_jEEEEEE@Base 1
  (arch=armel riscv64)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 1
- (arch=!armel !riscv64)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
  (arch=armel riscv64)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 1
- (arch=!armel !riscv64)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 1
  _ZTSSt19_Sp_make_shared_tag@Base 1
  (arch=armel riscv64)_ZTSSt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE1EE@Base 1
- (arch=!armel !riscv64)_ZTSSt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE2EE@Base 1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTSSt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE2EE@Base 1
  _ZTVNSt6thread11_State_implINS_8_InvokerISt5tupleIJSt10mem_fun1_tIvN5Clasp11ClaspFacade13SolveStrategyENS4_11SolveMode_tEEPNS6_5AsyncENS7_1EEEEEEEE@Base 1
  _ZTVNSt6thread11_State_implINS_8_InvokerISt5tupleIJSt10mem_fun1_tIvN5Clasp2mt13ParallelSolveEjEPS6_jEEEEEE@Base 1
  (arch=armel riscv64)_ZTVSt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE1EE@Base 1
- (arch=!armel !riscv64)_ZTVSt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE2EE@Base 1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTVSt23_Sp_counted_ptr_inplaceIjSaIjELN9__gnu_cxx12_Lock_policyE2EE@Base 1
  _ZZNSt19_Sp_make_shared_tag5_S_tiEvE5__tag@Base 5.3.0-5~
  clingo_add_string@Base 1
  clingo_assignment_decision@Base 1