Have 'dunepackaging.py' add a 'is generated' comment to both setup.py and pyproject.toml.

This should be done in the other dune modules as well as some point.

bin/dunepackaging.py

@@ -92,6 +92,13 @@ def main(argv):
     # Generate setup.py
     print("Generate setup.py")
     f = open("setup.py", "w")
+    f.write("""#
+# DO NOT MODIFY THIS FILE!
+# This file is autogenerated by the `dunepackaging.py` script and
+# only used for the pypi dune packages. This file will not be included in
+# the build directory.
+#
+""")
     f.write("import os, sys\n")
     if data.name == 'dune-common':
         f.write("here = os.path.dirname(os.path.abspath(__file__))\n")
@@ -109,9 +116,22 @@ def main(argv):
     # Generate pyproject.toml
     print("Generate pyproject.toml")
     f = open("pyproject.toml", "w")
+    f.write("""#
+# DO NOT MODIFY THIS FILE!
+# This file is autogenerated by the `dunepackaging.py` script and
+# only used for the pypi dune packages. This file will not be included in
+# the build directory.
+#
+# This is uses the `Python-Requires` field in the `dune.modules` file to
+# populate the `requires` entry. Additional packages needed for the package
+# build should be added in the `dune.modules`. These packages will then also be
+# included in the package install from source.
+#
+""")
     requires = data.asPythonRequirementString(data.depends + data.python_requires)
     minimal = ["pip", "setuptools", "wheel", "scikit-build", "cmake", "ninja", "requests"]
     requires += [r for r in minimal if not any([a.startswith(r) for a in requires])]
+    requires.sort()
     f.write("[build-system]\n")
     f.write("requires = "+requires.__str__()+"\n")
     f.write("build-backend = 'setuptools.build_meta'\n")

pyproject.toml

+#
+# DO NOT MODIFY THIS FILE!
+# This file is autogenerated by the `dunepackaging.py` script and
+# only used for the pypi dune packages. This file will not be included in
+# the build directory.
+#
+# This is uses the `Python-Requires` field in the `dune.modules` file to
+# populate the `requires` entry. Additional packages needed for the package
+# build should be added in the `dune.modules`. These packages will then also be
+# included in the package install from source.
+#
 [build-system]
-requires = ['setuptools', 'wheel', 'scikit-build', 'cmake', 'ninja', 'requests', 'portalocker', 'numpy', 'mpi4py']
+requires = ['cmake', 'jinja2', 'mpi4py', 'ninja', 'numpy', 'pip>=21.0.0', 'portalocker', 'requests', 'scikit-build', 'setuptools', 'wheel']
 build-backend = 'setuptools.build_meta'

python/dune/packagemetadata.py

@@ -325,7 +325,7 @@ def metaData(version=None, dependencyCheck=True):
         try:
             with io.open('pyproject.toml', 'r', encoding='utf-8') as f:
                 for line in f:
-                    if 'requires' in line:
+                    if not line.startswith("#") and 'requires' in line:
                         line = line.split('=',maxsplit=1)[1].strip()
                         modules = ast.literal_eval(line)
                         modules = [x for x in modules

setup.py

+#
+# DO NOT MODIFY THIS FILE!
+# This file is autogenerated by the `dunepackaging.py` script and
+# only used for the pypi dune packages. This file will not be included in
+# the build directory.
+#
 import os, sys
 here = os.path.dirname(os.path.abspath(__file__))
 mods = os.path.join(here, "python", "dune")