Add nox tasks to output python and exasol versions for builds

Author: Nicoretti

exasol/toolbox/nox/_ci.py

@@ -0,0 +1,32 @@
+import json
+
+import nox
+from nox import Session
+
+
+def _python_matrix():
+    return {"python-version": ["3.9", "3.10", "3.11", "3.12"]}
+
+
+def _exasol_matrix():
+    return {"exasol-version": ["7.1.9"]}
+
+
+@nox.session(name="matrix:python", python=False)
+def python_matrix(session: Session) -> None:
+    """Output the build matrix for Python versions as JSON."""
+    print(json.dumps(_python_matrix()))
+
+
+@nox.session(name="matrix:exasol", python=False)
+def exasol_matrix(session: Session) -> None:
+    """Output the build matrix for Exasol versions as JSON."""
+    print(json.dumps(_exasol_matrix()))
+
+
+@nox.session(name="matrix:all", python=False)
+def full_matrix(session: Session) -> None:
+    """Output the full build matrix for Python & Exasol versions as JSON."""
+    matrix = _python_matrix()
+    matrix.update(_exasol_matrix())
+    print(json.dumps(matrix))

exasol/toolbox/nox/tasks.py

@@ -59,14 +59,20 @@ def check(session: Session) -> None:
     clean_docs,
     open_docs,
 )
-from exasol.toolbox.nox._release import prepare_release
 from exasol.toolbox.nox._shared import (
     Mode,
     _context,
     _version,
     python_files,
 )
 
+from exasol.toolbox.nox._ci import (
+    python_matrix,
+    exasol_matrix,
+    full_matrix,
+)
+
+from exasol.toolbox.nox._release import prepare_release
 
 # isort: on
 # fmt: on