Install pytest-sphinx from conda-forge and fix mypy errors

[maresb]

Description

pytest-sphinx is now available from conda-forge, so we should install it from there to simplify our environment specifications and installation process.

Updating the dependencies busts the micromamba cache on our CI. As noted in #1598, for such a fresh install, mypy was broken on main. This also fixes type errors in 8 files.

Afterwards, we are able to remove pytensor/compile/sharedvalue.py from mypy-failing.txt.

Related Issue

• Closes #
• Related to Add scipy-stubs as development depedency #1598

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

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📚 Documentation preview 📚: https://pytensor--1599.org.readthedocs.build/en/1599/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.71%. Comparing base (7092f55) to head (1acb289).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1599   +/-   ##
=======================================
  Coverage   81.71%   81.71%           
=======================================
  Files         230      230           
  Lines       52924    52925    +1     
  Branches     9402     9402           
=======================================
+ Hits        43248    43249    +1     
  Misses       7244     7244           
  Partials     2432     2432           

Files with missing lines	Coverage Δ
pytensor/link/jax/linker.py	96.22% <100.00%> (+0.07%)	⬆️
pytensor/link/numba/dispatch/vectorize_codegen.py	91.15% <100.00%> (ø)
pytensor/npy_2_compat.py	100.00% <100.00%> (ø)
pytensor/scan/utils.py	87.56% <100.00%> (ø)
pytensor/tensor/einsum.py	97.10% <100.00%> (ø)
pytensor/tensor/random/rewriting/numba.py	100.00% <100.00%> (ø)
pytensor/tensor/rewriting/blockwise.py	96.24% <100.00%> (ø)
pytensor/tensor/rewriting/numba.py	100.00% <100.00%> (ø)

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[Copilot]

Pull Request Overview

This PR simplifies the pytest-sphinx installation by moving it from pip to conda-forge, and resolves mypy type checking errors across multiple files. The changes enable removing pytensor/compile/sharedvalue.py from the mypy exclusion list.

• Install pytest-sphinx from conda-forge instead of pip
• Fix mypy type annotation and casting errors in 8 files
• Remove pytensor/compile/sharedvalue.py from mypy-failing.txt

Reviewed Changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
scripts/mypy-failing.txt	Removes pytensor/compile/sharedvalue.py from mypy exclusion list
pytensor/tensor/rewriting/numba.py	Removes type ignore comments for proper type annotations
pytensor/tensor/rewriting/blockwise.py	Removes type ignore comment for Blockwise type annotation
pytensor/tensor/random/rewriting/numba.py	Removes type ignore comments for RandomVariable and ShapeFeature
pytensor/tensor/einsum.py	Adds proper type annotations and casting for einsum path handling
pytensor/scan/utils.py	Adds explicit type casting for Variable return type
pytensor/npy_2_compat.py	Adds type ignore comment for NumPy 2 compatibility
pytensor/link/numba/dispatch/vectorize_codegen.py	Replaces type ignore with pyright ignore comments
pytensor/link/jax/linker.py	Moves scalar_shape_inputs type annotation to class level
environment.yml	Moves pytest-sphinx from pip to conda-forge dependencies
environment-osx-arm64.yml	Moves pytest-sphinx from pip to conda-forge dependencies
.github/workflows/test.yml	Adds pytest-sphinx to micromamba install commands

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[ricardoV94]

Nice

[maresb]

Thanks @ricardoV94!