docs: upgrade pip command to install build system dependencies

[smola]

Upgrade pip command to install build system dependencies. Option --no-install is not a valid option since pip 7 (release notes).

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

docs/build_system.rst                                                   @DataDog/python-guild

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 229 ± 2 ms.

The average import time from base is: 232 ± 1 ms.

The import time difference between this PR and base is: -2.56 ± 0.07 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.028 ms (0.88%)

ddtrace.bootstrap.sitecustomize 1.326 ms (0.58%)

ddtrace.bootstrap.preload 1.326 ms (0.58%)

ddtrace.internal.products 1.326 ms (0.58%)

ddtrace.internal.remoteconfig.client 0.629 ms (0.27%)

ddtrace 0.701 ms (0.31%)

ddtrace._logger 0.030 ms (0.01%)

logging 0.030 ms (0.01%)

traceback 0.030 ms (0.01%)

contextlib 0.030 ms (0.01%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-04-21 18:35:11

Comparing candidate commit b2d78ce in PR branch smola/update-docs-build-system with baseline commit 997a12e in branch main.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 500 metrics, 7 unstable metrics.

scenario:iast_aspects-replace_aspect

• 🟥 execution_time [+453.794ns; +591.506ns] or [+9.712%; +12.660%]

[emmettbutler]

This could be simplified with pip install '.[build-system]'

[smola]

@emmettbutler The command appears to work but I see the following warning:

WARNING: ddtrace 3.6.0.dev16+gb2d78cefb does not provide the extra 'build-system'

Also the point of the command seemed to be installed deps without building the project, but that actually builds it.