Update CI

Stop testing using Python 3.6
Test on Ubuntu 20.04
Update to latest version of symengine

Author: rikardn

.github/workflows/ci.yml

@@ -8,91 +8,81 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - BUILD_TYPE: Debug
-            WITH_BFD: yes
-            PYTHON_VERSION: 3.6
-            TEST_SYMPY: yes
-            OS: ubuntu-16.04
-            CC: gcc
-
           - BUILD_TYPE: Debug
             WITH_BFD: yes
             PYTHON_VERSION: 3.9
             TEST_SYMPY: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
             PYTHON_VERSION: 3.7
             BUILD_SHARED_LIBS: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
             PYTHON_VERSION: 3.7
             WITH_MPFR: yes
             INTEGER_CLASS: gmpxx
             WITH_NUMPY: no
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
             PYTHON_VERSION: 3.8
             WITH_MPC: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
             WITH_MPFR: yes
             PYTHON_VERSION: 3.8
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
             PYTHON_VERSION: 3.9
             WITH_MPC: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
-            PYTHON_VERSION: 3.6
+            PYTHON_VERSION: 3.9
             WITH_MPC: yes
             INTEGER_CLASS: flint
             WITH_FLINT: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Debug
-            PYTHON_VERSION: 3.7
+            PYTHON_VERSION: 3.9
             WITH_BFD: yes
             WITH_PIRANHA: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: gcc
-            EXTRA_APT_PACKAGES: "g++-4.8"
 
           - BUILD_TYPE: Debug
             PYTHON_VERSION: 3.8
             WITH_BFD: yes
             BUILD_SHARED_LIBS: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: clang
 
           - BUILD_TYPE: Release
             PYTHON_VERSION: 3.7
             WITH_NUMPY: yes
-            OS: ubuntu-16.04
+            OS: ubuntu-20.04
             CC: clang
 
           - BUILD_TYPE: Debug
-            PYTHON_VERSION: 3.6
+            PYTHON_VERSION: 3.8
             WITH_SYMPY: yes
-            WITH_LLVM: 8.0
+            WITH_LLVM: 13 
             WITH_SCIPY: yes
-            OS: ubuntu-16.04
-            CC: gcc-4.8
-            CXX: g++-4.8
-            EXTRA_APT_REPOSITORY: 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main'
-            EXTRA_APT_PACKAGES: 'g++-4.8 libstdc++-4.8-dev binutils-dev llvm-8-dev'
+            OS: ubuntu-20.04
+            EXTRA_APT_REPOSITORY: 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main'
+            EXTRA_APT_PACKAGES: 'llvm-13'
 
           - BUILD_TYPE: Debug
             PYTHON_VERSION: 3.7
@@ -114,13 +104,13 @@ jobs:
             CC: gcc
 
           - BUILD_TYPE: Release
-            PYTHON_VERSION: 3.6
+            PYTHON_VERSION: 3.8
             OS: macos-latest
             CC: gcc
 
           - BUILD_TYPE: Release
-            PYTHON_VERSION: 3.6
-            OS: ubuntu-16.04
+            PYTHON_VERSION: 3.8
+            OS: ubuntu-20.04
             WITH_MPC: yes
             WITH_MPFR: yes
             WITH_FLINT: yes
@@ -148,7 +138,7 @@ jobs:
         TEST_IN_TREE: ${{ matrix.TEST_IN_TREE }}
         WITH_SYMENGINE_THREAD_SAFE: ${{ matrix.WITH_SYMENGINE_THREAD_SAFE }}
         WITH_PRIMESIEVE: ${{ matrix.WITH_PRIMESIEVE }}
-        INTEGER_CLASS: ${{ matrix.INTEGER_CLASS }}
+        INTEGER_CLASS: ${{ matrix.gNTEGER_CLASS }}
         WITH_ARB: ${{ matrix.WITH_ARB }}
         WITH_PIRANHA: ${{ matrix.WITH_PIRANHA }}
         WITH_GCC_6: ${{ matrix.WITH_GCC_6 }}

symengine_version.txt

@@ -1 +1 @@
-bb386f47369500d76cda07e6e9f014bfe6339f64
+b104685091b4b84a26ac3ab75b8c51943390eb05