Add SCIP Persistent Support

.github/workflows/test_branches.yml

@@ -268,6 +268,12 @@ jobs:
                 || echo "WARNING: Gurobi is not available"
             python -m pip install --cache-dir cache/pip xpress \
                 || echo "WARNING: Xpress Community Edition is not available"
+            if [[ ${{matrix.python}} == pypy* ]]; then
+                echo "skipping SCIP for pypy"
+            else
+                python -m pip install --cache-dir cache/pip pyscipopt==5.0.0 \
+                    || echo "WARNING: SCIP is not available"
+            fi
             if [[ ${{matrix.python}} == pypy* ]]; then
                 echo "skipping wntr for pypy"
             else

.github/workflows/test_pr_and_main.yml

@@ -298,6 +298,12 @@ jobs:
                 || echo "WARNING: Gurobi is not available"
             python -m pip install --cache-dir cache/pip xpress \
                 || echo "WARNING: Xpress Community Edition is not available"
+            if [[ ${{matrix.python}} == pypy* ]]; then
+                echo "skipping SCIP for pypy"
+            else
+                python -m pip install --cache-dir cache/pip pyscipopt==5.0.0 \
+                    || echo "WARNING: SCIP is not available"
+            fi
             if [[ ${{matrix.python}} == pypy* ]]; then
                 echo "skipping wntr for pypy"
             else

doc/OnlineDocs/library_reference/solvers/index.rst

@@ -9,3 +9,4 @@ Solver Interfaces
    gurobi_direct.rst
    gurobi_persistent.rst
    xpress_persistent.rst
+   scip_persistent.rst

doc/OnlineDocs/library_reference/solvers/scip_persistent.rst

@@ -0,0 +1,7 @@
+SCIPPersistent
+================
+
+.. autoclass:: pyomo.solvers.plugins.solvers.scip_persistent.SCIPPersistent
+   :members:
+   :inherited-members:
+   :show-inheritance:

pyomo/solvers/plugins/solvers/__init__.py

@@ -30,3 +30,5 @@
 import pyomo.solvers.plugins.solvers.mosek_persistent
 import pyomo.solvers.plugins.solvers.xpress_direct
 import pyomo.solvers.plugins.solvers.xpress_persistent
+import pyomo.solvers.plugins.solvers.scip_direct
+import pyomo.solvers.plugins.solvers.scip_persistent