pkgs/sagemath-*/tox.ini: Create environment that uses Sage's python as the basepython, fix sagemath-standard deps

[mkoeppe]

Newer versions of tox seem to provision python 3.10 when the environment python is used, but then our wheels don't necessarily fit.

For this reason, the examples shown in the developer's manual hardcoded the Python version (tox -e py39).

We now define tox environments sagepython in tox.ini, which takes Python as SAGE_VENV/bin/python3 and change the manual to use this environment in examples, such as:

./bootstrap && ./sage -sh -c '(cd pkgs/sagemath-standard && SAGE_NUM_THREADS=16 tox -v -v -v -e sagepython-sagewheels-nopypi)'

(to be run after make build)

Depends on #33936

CC: @dimpase @kwankyu

Component: refactoring

Author: Matthias Koeppe

Branch: ca9d6ce

Reviewer: Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/32716

[mkoeppe]

Branch: u/mkoeppe/pkgs_sagemath_standard_tox_ini__use_sage_s_python_by_default

[mkoeppe]

Author: Matthias Koeppe

[mkoeppe]

Commit: 9db6b2f

[mkoeppe]

Description changed:

--- 
+++ 
@@ -1,2 +1,6 @@
-Newer versions of `tox` seem to provision python 3.10 when the environment `python` is used, but then our wheels don't fit.
+Newer versions of `tox` seem to provision python 3.10 when the environment `python` is used, but then our wheels don't necessarily fit.
 
+For this reason, the examples shown in the developer's manual hardcoded the Python version (`tox -e py39`). 
+
+We now define tox environments `sagepython` in `tox.ini`, which takes Python as `SAGE_VENV/bin/python3` and change the manual to use this environment in examples.
+

[mkoeppe]

New commits:

5ce30b8	pkgs/sage-setup, sagemath-{objects,categories,standard}: Add tox environment sagepython
9db6b2f	src/doc/en/developer/packaging_sage_library.rst: Use sagepython instead of hardcoded py39

[mkoeppe]

Description changed:

--- 
+++ 
@@ -2,5 +2,9 @@
 
 For this reason, the examples shown in the developer's manual hardcoded the Python version (`tox -e py39`). 
 
-We now define tox environments `sagepython` in `tox.ini`, which takes Python as `SAGE_VENV/bin/python3` and change the manual to use this environment in examples.
+We now define tox environments `sagepython` in `tox.ini`, which takes Python as `SAGE_VENV/bin/python3` and change the manual to use this environment in examples, such as:
 
+```
+./bootstrap && ./sage -sh -c '(cd pkgs/sagemath-standard && SAGE_NUM_THREADS=16 tox -v -v -v -e sagepython-sagewheels-nopypi)'
+```
+

[dimpase]

comment:8

command in the ticket description fails with

WARNING: Url 'file:///home/scratch/scratch2/dimpase/sage/sagetrac-mirror/pkgs/sagemath-standard/../../../../venv/var/lib/sage/wheels' is ignored: it is neither a file nor a directory.
ERROR: Could not find a version that satisfies the requirement sage-conf==9.7.beta1
ERROR: No matching distribution found for sage-conf==9.7.beta1
ERROR: invocation failed (exit code 1)
ERROR: could not install deps [-rrequirements.txt]; v = InvocationError('/home/scratch/scratch2/dimpase/sage/sagetrac-mirror/pkgs/sagemath-standard/.tox/sagepython-sagewheels-nopypi/bin/python -m pip install -rrequirements.txt', 1)
sagepython-sagewheels-nopypi finish: getenv /home/scratch/scratch2/dimpase/sage/sagetrac-mirror/pkgs/sagemath-standard/.tox/sagepython-sagewheels-nopypi after 0.69 seconds
...

[mkoeppe]

comment:9

Did you run make build as the manual explains?

[mkoeppe]

Description changed:

--- 
+++ 
@@ -7,4 +7,4 @@
 ```
 ./bootstrap && ./sage -sh -c '(cd pkgs/sagemath-standard && SAGE_NUM_THREADS=16 tox -v -v -v -e sagepython-sagewheels-nopypi)'
 ```
-
+(to be run after `make build`)

[dimpase]

comment:11

besides make build, I also needed to apply

diff --git a/build/pkgs/sage_conf/install-requires.txt b/build/pkgs/sage_conf/install-requires.txt
index 83ad7e641fa..3d4ff51d565 100644
--- a/build/pkgs/sage_conf/install-requires.txt
+++ b/build/pkgs/sage_conf/install-requires.txt
@@ -1 +1 @@
-sage-conf ~= 9.5.b6
+sage-conf
diff --git a/build/pkgs/sage_setup/install-requires.txt b/build/pkgs/sage_setup/install-requires.txt
index 01a931f5eb5..9d4666c07f4 100644
--- a/build/pkgs/sage_setup/install-requires.txt
+++ b/build/pkgs/sage_setup/install-requires.txt
@@ -1 +1 @@
-sage-setup ~= 9.5.b6
+sage-setup

that 9.5.b6 seemed to come from an obsolete workaround anyway.

[dimpase]

comment:12

And after these changes, it errors out (much later) with

ModuleNotFoundError: No module named 'primecountpy'
ERROR: InvocationError for command /home/scratch/scratch2/dimpase/sage/sagetrac-mirror/pkgs/sagemath-standard/.tox/sagepython-sagewheels-nopypi/bin/python -c 'import sys; "" in sys.path and sys.path.remove(""); import sage.all; print(sage.all.__file__)' (exited with code 1)