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Distinguish between direct and transitive packages#1530

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vscode-python-environments-package-transitive
Open

Distinguish between direct and transitive packages#1530
edvilme wants to merge 20 commits into
mainfrom
vscode-python-environments-package-transitive

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@edvilme

@edvilme edvilme commented May 20, 2026

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This pull request attempts to identify transitive packages in the user environment, and show indicators in the UI.

Problem

image

All installed packages, regardless of hierarchy are displayed equally in the sidebar. However, the relationships between them is not entirely obvious through the UI. This may cause (less experienced) users to get confused when they see packages they haven't explicitly installed, or to modify/delete transitive packages, potentially affecting their direct packages.

Hence, there needs to be a way to clearly distinguish between them, and provide guardrails to prevent unintended behaviour.

Proposal

Direct packages are detected through the built in commands of the package managers

Package Manager Command Description
pip pip list --not-required --format=json Lists packages not required (direct, non-transitive) by other packages in a JSON format.
uv uv pip tree --depth 0 Lists a dependency tree of all the packages with depth 0 (i.e., doesn't include transitive packages).
poetry poetry show --top-level --no-ansi Lists the top level packages
conda conda env export --from-history * Lists explicitly installed packages (note: this does not differenciate between direct/transitive)

Packages shown are clearly identified as "Direct packages" or "Transitive" in the UI. Controls for uninstalling transitive packages are hidden to avoid unwanted behaviors.

image

Closes #524

@edvilme edvilme added the feature-request Request for new features or functionality label May 20, 2026
@edvilme edvilme requested a review from Copilot May 20, 2026 22:55

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@eleanorjboyd

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do you have a screenshot of what this would look like? and how do you see it working for other pkg managers?

@edvilme edvilme force-pushed the vscode-python-environments-package-transitive branch from 8f270b3 to 1bd1f7b Compare June 2, 2026 20:42
@edvilme edvilme changed the base branch from main to vscode-python-environments-package-refactor June 2, 2026 20:42
@edvilme

edvilme commented Jun 2, 2026

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Depends on #1538
Will re-target and rebase when merged

@edvilme edvilme force-pushed the vscode-python-environments-package-transitive branch 2 times, most recently from 3eed7fb to e6467d6 Compare June 11, 2026 21:22
Base automatically changed from vscode-python-environments-package-refactor to main June 11, 2026 22:26
@edvilme edvilme force-pushed the vscode-python-environments-package-transitive branch from e6467d6 to 3f579f5 Compare June 11, 2026 22:44
edvilme and others added 2 commits June 11, 2026 15:47
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
@edvilme edvilme marked this pull request as ready for review June 11, 2026 22:57
@edvilme edvilme changed the title [Draft] Indicate transitive packages. Distinguish between direct and transitive packages Jun 11, 2026
@edvilme edvilme requested a review from Copilot June 12, 2026 00:00
Comment thread src/features/envCommands.ts Outdated
Comment thread src/managers/builtin/pipListUtils.ts
Comment thread src/managers/poetry/poetryPackageManager.ts
Comment thread src/api.ts
Comment thread src/test/managers/common/packageChanges.unit.test.ts

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Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 9 comments.

Comment thread src/managers/poetry/poetryPackageManager.ts
Comment thread src/managers/common/packageChanges.ts Outdated
Comment thread src/features/views/treeViewItems.ts Outdated
Comment thread src/features/views/treeViewItems.ts Outdated
Comment thread src/features/views/envManagersView.ts
Comment thread src/features/views/projectView.ts Outdated
Comment thread src/features/envCommands.ts
Comment thread src/api.ts
Comment thread api/src/main.ts
- Log parse failures in parsePipListJson() instead of silently returning []
- Make isTransitive readonly on PackageInfo and PythonPackageImpl
- Rename fetchDirectPackageNames to getDirectPackageNames in public API
- Fix JSDoc to say Set instead of array
- Add isTransitive to public API PackageInfo
- Localize transitive uninstall confirmation and (transitive) prefix
- Respect pkg.iconPath, only fallback to ThemeIcon
- Wrap getDirectPackageNames in try/catch for error isolation
- Use poetry show --top-level instead of --tree; fix glyph regex
- Only refresh packages when cache is empty, not on every expansion
- Add unit tests for parsePipListJson, parseUvTree, and error handling

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
@edvilme

edvilme commented Jun 12, 2026

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Addressed all review comments in the latest commit. See individual replies on each comment thread for details.

Comment thread src/features/envCommands.ts
edvilme and others added 2 commits June 12, 2026 11:59
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Comment thread src/features/envCommands.ts
Comment thread api/src/main.ts
* @param environment - The Python environment for which to fetch direct package names.
* @returns A promise that resolves to a set of package name strings, or undefined if not supported.
*/
getDirectPackageNames?(environment: PythonEnvironment): Promise<Set<string> | undefined>;

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Is it implemented for conda? Seems not covered

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Conda doesn't have a direct mechanism for getting direct packages, only conda env export --from-history which isn't strictly the same as direct or transitive packages, and can lead to more confusion

Comment thread src/managers/builtin/utils.ts
Comment thread src/managers/common/packageChanges.ts
Comment thread src/managers/poetry/poetryPackageManager.ts Outdated
// If direct package detection fails, leave isTransitive undefined rather than breaking refresh
}
if (afterDirectDependenciesNames && afterDirectDependenciesNames.size > 0) {
for (const pkg of after) {

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Copilot generated: isTransitive is declared readonly on both the public PackageInfo and PythonPackageImpl, but this writes to it through a structural cast — that bypasses the contract just introduced. It also depends on getPackages() returning the same cached object references each call, which isn't a documented guarantee. Preferred: compute isTransitive inside each manager's refresh() and pass it through api.createPackageItem(...) so the field is genuinely immutable and the cast can go away.

Comment thread src/features/views/envManagersView.ts Outdated
Comment thread src/managers/common/packageChanges.ts Outdated
Comment thread api/src/main.ts
/**
* Fetches the names of direct (non-transitive) packages for the specified Python environment.
* @param environment - The Python environment for which to fetch direct package names.
* @returns A promise that resolves to a set of package name strings, or undefined if not supported.

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Copilot generated: Two questions on this signature:

  1. Set<string> is unusual on our public API surface; readonly string[] would be more consistent with the rest of PackageManager and easier for consumers to serialize/transport.
  2. The three observable states — method not implemented, method returns undefined, method returns an empty Set — all need documented semantics. The current consumer treats empty-set as "no info" (via a size > 0 guard), which silently drops legitimately-empty results. Likewise, consumers of PackageInfo.isTransitive can't distinguish undefined from false; please document that undefined means "unknown".

Comment thread src/managers/common/packageChanges.ts Outdated
edvilme and others added 6 commits June 15, 2026 12:40
Show a modal warning with 'Uninstall Anyway' / 'Cancel' instead of
silently blocking uninstall of transitive packages.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
…intent)

pip list --not-required and uv pip tree --depth=0 return leaf packages
(no dependents), not user-installed packages. Document this limitation
on the PackageManager interface, pip implementation, and utility function.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Transitive packages now show a tooltip: 'This package is a dependency
of another installed package. It may also have been explicitly installed.'

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Include . in the extraction regex so dotted package names like
zope.interface and ruamel.yaml are not truncated. Normalization
via normalizePackageName (PEP 503) is already applied for comparison.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Unclear which packages were installed as dependencies of another

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