gh-36400: `build/pkgs/setuptools_scm`: Update to 8.0.4, add fixes for version 8
    
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Version 8 needs some new workarounds when packages that do not use
`setuptools_scm` are installed with `--no-build-isolation` in an
environment with `setuptools_scm`. This is relevant in particular for
conda, see #35593.

`setuptools_scm` inserts itself into the build process of unsuspecting
packages via entry points declared by setuptools. One gets a warning:
-   `[sage_conf-10.2.beta5]     WARNING
setuptools_scm._integration.setuptools pyproject.toml does not contain a
tool.setuptools_scm section` (https://github.com/sagemath/sage/actions/r
uns/6409373032/job/17400573034?pr=36400#step:8:3978)

These warnings show up at build time, but also in runtime uses of
Cython, where it causes doctest failures.

Here we do the update (for no specific reason other than to be up to
date) and implement the workarounds.
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URL: #36400
Reported by: Matthias Köppe
Reviewer(s): Dima Pasechnik, Tobias Diez

Author: Release Manager

build/pkgs/setuptools_scm/checksums.ini

@@ -1,5 +1,5 @@
-tarball=setuptools_scm-VERSION.tar.gz
-sha1=b8c9447fe6dfc44107c9cbd2fd82314aad3cb95e
-md5=0df4e7fd923e4983cd65786efaa0e0d0
-cksum=3196930290
-upstream_url=https://pypi.io/packages/source/s/setuptools_scm/setuptools_scm-VERSION.tar.gz
+tarball=setuptools_scm-VERSION-py3-none-any.whl
+sha1=cfde7254fe351b69cd4bf02e1b57e0b3c59aa9a6
+md5=4c054a609965886703ede26a4ba3206d
+cksum=1360813947
+upstream_url=https://pypi.io/packages/py3/s/setuptools_scm/setuptools_scm-VERSION-py3-none-any.whl

build/pkgs/setuptools_scm/dependencies

@@ -1,4 +1,4 @@
- typing_extensions | setuptools pip wheel tomli packaging $(PYTHON)
+packaging setuptools tomli typing_extensions | pip $(PYTHON)
 
 ----------
 All lines of this file are ignored except the first.

build/pkgs/setuptools_scm/package-version.txt

@@ -1 +1 @@
-7.0.5
+8.0.4

build/pkgs/setuptools_scm/spkg-install.in

@@ -1,2 +1,13 @@
 from setuptools import setup
+from setuptools.dist import Distribution
+
+# setuptools plugins considered harmful:
+# If build isolation is not in use and setuptools_scm is installed,
+# then its file_finders entry point is invoked, which we don't need.
+# And with setuptools_scm 8, we get more trouble:
+# LookupError: pyproject.toml does not contain a tool.setuptools_scm section
+# LookupError: setuptools-scm was unable to detect version ...
+# We just remove all handling of "setuptools.finalize_distribution_options" entry points.
+Distribution._removed = staticmethod(lambda ep: True)
+
 setup()

pkgs/sage-conf/setup.py

@@ -6,12 +6,23 @@
 import fnmatch
 
 from setuptools import setup
+from setuptools.dist import Distribution
 from distutils.command.build_scripts import build_scripts as distutils_build_scripts
 from setuptools.command.build_py import build_py as setuptools_build_py
 from setuptools.command.editable_wheel import editable_wheel as setuptools_editable_wheel
 from setuptools.errors import SetupError
 
 
+# setuptools plugins considered harmful:
+# If build isolation is not in use and setuptools_scm is installed,
+# then its file_finders entry point is invoked, which we don't need.
+# And with setuptools_scm 8, we get more trouble:
+# LookupError: pyproject.toml does not contain a tool.setuptools_scm section
+# LookupError: setuptools-scm was unable to detect version ...
+# We just remove all handling of "setuptools.finalize_distribution_options" entry points.
+Distribution._removed = staticmethod(lambda ep: True)
+
+
 class build_py(setuptools_build_py):
 
     def run(self):

pkgs/sage-conf_pypi/setup.py

@@ -1,5 +1,15 @@
 #!/usr/bin/env python
 
 from setuptools import setup
+from setuptools.dist import Distribution
+
+# setuptools plugins considered harmful:
+# If build isolation is not in use and setuptools_scm is installed,
+# then its file_finders entry point is invoked, which we don't need.
+# And with setuptools_scm 8, we get more trouble:
+# LookupError: pyproject.toml does not contain a tool.setuptools_scm section
+# LookupError: setuptools-scm was unable to detect version ...
+# We just remove all handling of "setuptools.finalize_distribution_options" entry points.
+Distribution._removed = staticmethod(lambda ep: True)
 
 setup()

pkgs/sage-docbuild/setup.py

@@ -1,5 +1,15 @@
 #!/usr/bin/env python
 
 from setuptools import setup
+from setuptools.dist import Distribution
+
+# setuptools plugins considered harmful:
+# If build isolation is not in use and setuptools_scm is installed,
+# then its file_finders entry point is invoked, which we don't need.
+# And with setuptools_scm 8, we get more trouble:
+# LookupError: pyproject.toml does not contain a tool.setuptools_scm section
+# LookupError: setuptools-scm was unable to detect version ...
+# We just remove all handling of "setuptools.finalize_distribution_options" entry points.
+Distribution._removed = staticmethod(lambda ep: True)
 
 setup()

pkgs/sage-setup/setup.py

@@ -1,2 +1,13 @@
 from setuptools import setup
+from setuptools.dist import Distribution
+
+# setuptools plugins considered harmful:
+# If build isolation is not in use and setuptools_scm is installed,
+# then its file_finders entry point is invoked, which we don't need.
+# And with setuptools_scm 8, we get more trouble:
+# LookupError: pyproject.toml does not contain a tool.setuptools_scm section
+# LookupError: setuptools-scm was unable to detect version ...
+# We just remove all handling of "setuptools.finalize_distribution_options" entry points.
+Distribution._removed = staticmethod(lambda ep: True)
+
 setup()

pkgs/sage-sws2rst/setup.py

@@ -422,6 +422,14 @@ def cython(filename, verbose=0, compile_message=False,
 
     # This emulates running "setup.py build" with the correct options
     dist = Distribution()
+    # setuptools plugins considered harmful:
+    # If build isolation is not in use and setuptools_scm is installed,
+    # then its file_finders entry point is invoked, which we don't need.
+    # And with setuptools_scm 8, we get more trouble:
+    # LookupError: pyproject.toml does not contain a tool.setuptools_scm section
+    # LookupError: setuptools-scm was unable to detect version ...
+    # We just remove all handling of "setuptools.finalize_distribution_options" entry points.
+    dist._removed = staticmethod(lambda ep: True)
     dist.ext_modules = [ext]
     dist.include_dirs = includes
     buildcmd = dist.get_command_obj("build")