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feat: add opt-in isolated environment path detection - #1123
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Drop PYTHONPATH, PYTHONHOME, and VIRTUAL_ENV when --isolated probes the target interpreter. The default still inherits them. Fixes CycloneDX#1045 Signed-off-by: Elton Chang <80650461+Notle-eltoN@users.noreply.github.com> Co-authored-by: Cursor <cursoragent@cursor.com>
Up to standards ✅🟢 Issues
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| Metric | Results |
|---|---|
| Complexity | ✅ 6 (≤ 20 complexity) |
| Duplication | 0 |
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EltonChang1
marked this pull request as draft
October 17, 2026 01:42
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Description
Add an opt-in
--isolatedflag tocyclonedx-py environment. When it is set, the interpreter path probe does not inheritPYTHONPATH,PYTHONHOME, orVIRTUAL_ENV, including mixed-case names on Windows. A parent process can no longer inject packages into an SBOM for a target environment. The flag is off by default, so workflows that intentionally pass those variables keep the current behavior.The probe builds a fresh environment mapping and drops those names case-insensitively, because
os.environ.copy()is case-sensitive even where Windows environment lookup is not. With no interpreter argument,--isolatedprobes the current executable under that same cleaned environment instead of reusing the already-importedsys.path.Resolves or fixes issue: #1045
AI Tool Disclosure
--isolatedflag from issue 1045. DropPYTHONPATH,PYTHONHOME, andVIRTUAL_ENVonly when the flag is set, keep the default inheritance behavior, and add regression tests plus the environment help text.Affirmation