chore(python): Remove old dependencies on atomicwrites and colorama

[SyntaxColoring]

Overview

This deletes some old workarounds in our Python dependencies that I don't think we need anymore.

Background

Python packages can conditionally depend on each other. For example, package A might depend on package B when it's being installed on Windows, but not when it's being installed on macOS. Pipenv has, uh, fascinatingly, never accounted for this.

I guess at some point, that caused trouble for us with two of Pytest's conditional dependencies, atomicwrites and colorama; and we worked around it by naming them as dependencies, even though we don't depend on them directly.

opentrons/api/Pipfile

Lines 26 to 30 in 59645ab

	# atomicwrites and colorama are pytest dependencies on windows,
	# spec'd here to force lockfile inclusion
	# https://github.com/pypa/pipenv/issues/4408#issuecomment-668324177
	atomicwrites = { version = "==1.4.0", markers="sys_platform=='win32'" }
	colorama = { version = "==0.4.4", markers="sys_platform=='win32'" }

Since then, two things have changed that I think make the workaround unnecessary:

1. Pytest no longer uses atomicwrites on any platform (though it does still use colorama on Windows).
2. We've switched from Pytest to uv, which has a universal, i.e. cross-platform, lockfile.

Changelog

• Remove atomicwrites and colorama from our direct dependencies.

• Run uv lock.

  In the lockfile, you can see that this deletes atomicwrites (because nothing needs it anymore) but keeps colorama (because uv is smart enough to see that Pytest still needs it on Windows).

• Leave hardware-testing and abr-testing alone, since they're still using Pipenv. When we get around to migrating them to uv, we should do the same thing for them.

Test Plan and Hands on Testing

Just CI?

Review requests

None.

Risk assessment

🤷

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.91%. Comparing base (f0770c9) to head (76c743d).
⚠️ Report is 5 commits behind head on edge.

Additional details and impacted files

@@            Coverage Diff             @@
##             edge   #20590      +/-   ##
==========================================
+ Coverage   56.25%   56.91%   +0.66%     
==========================================
  Files        3916     3652     -264     
  Lines      327778   306418   -21360     
  Branches    48159    45596    -2563     
==========================================
- Hits       184388   174398    -9990     
+ Misses     143171   131802   -11369     
+ Partials      219      218       -1     

Flag	Coverage Δ
app	46.00% <ø> (ø)
protocol-designer	19.61% <ø> (ø)
robot-server	?
step-generation	5.71% <ø> (ø)

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see 811 files with indirect coverage changes

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[sfoster1]

yay, thank you

[SyntaxColoring]

Looking into tests that are mysteriously hanging only for system-server and only in CI.

[Edit] I guess it was just flaky?