sage.misc.cython: Replace imports from distutils by setuptools

[mkoeppe]

part of #31295 (Meta-ticket: Replace imports from deprecated distutils).

We fall back to distutils if setuptools cannot be imported.
In this way we avoid having to declare setuptools as an install_requires of sagelib (for now).

CC: @fchapoton @jhpalmieri @kiwifb @kliem

Component: porting

Author: Matthias Koeppe

Branch/Commit: faa8ec6

Reviewer: John Palmieri

Issue created by migration from https://trac.sagemath.org/ticket/31349

[mkoeppe]

Branch: u/mkoeppe/sage_misc_cython__replace_imports_from_distutils_by_setuptools

[mkoeppe]

Commit: faa8ec6

[mkoeppe]

New commits:

faa8ec6

sage.misc.cython: Try using setuptools, fall back to distutils

[mkoeppe]

Author: Matthias Koeppe

[mkoeppe]

Description changed:

--- 
+++ 
@@ -1,2 +1,5 @@
 part of #30984.
 
+We fall back to distutils if setuptools cannot be imported. 
+In this way we avoid having to declare `setuptools` as an `install_requires` of `sagelib` (for now).
+

[mkoeppe]

Description changed:

--- 
+++ 
@@ -1,4 +1,4 @@
-part of #30984.
+part of #31295 (Meta-ticket: Replace imports from deprecated distutils).
 
 We fall back to distutils if setuptools cannot be imported. 
 In this way we avoid having to declare `setuptools` as an `install_requires` of `sagelib` (for now).

[jhpalmieri]

comment:6

Looks okay to me. Is there a reason to not "declare setuptools as an install_requires of sagelib"?

[mkoeppe]

comment:7

Mostly I wanted to avoid touching the files which are modified in #30913.

[jhpalmieri]

Reviewer: John Palmieri

[jhpalmieri]

comment:8

Okay, makes sense.

[mkoeppe]

comment:9

Thanks!

[vbraun]

Changed branch from u/mkoeppe/sage_misc_cython__replace_imports_from_distutils_by_setuptools to faa8ec6