Missing items in LD_LIBRARY_PATH break numpy stage-packages

Metadata

Project: snapcraft (launchpad)
Number: #1862516
Type: issue
State: open
Author: ~aglavic
Labels: —
Created: 2020-02-09 01:26 PM UTC
Updated: 2020-02-09 01:27 PM UTC
Closed: —

Current evaluation

Numpy staged via stage-packages fails at runtime because libblas.so.3 and liblapack.so.3 sit in nested blas/lapack directories outside the library search path; the old issue is untriaged.

Suggested action: needs triage

Reason: The report identifies exact missing libraries and nested directories, supplies a concrete setup, and shows an LD_LIBRARY_PATH workaround, so a packaging-path defect is plausible. However, it has no labels, maintainer comments, or current reproduction; current dependency documentation still requires users to add missing library directories, so the behavior needs verification and prioritization rather than closure.

Evaluated by: mr-cal-bot

Impact: 55 Quick Win: 16 Complexity: 58 Confidence: 72 Actionability: 70

Issue body

When trying to build a python project that used numpy by adding python3-numpy to stage-packages the import fails because libblas.so.3 and liblapack.so.3 cannot be found. The libraries are included in the snap package bud their path isn't searched during execution. I could work around it by adding these lines to my snapcraft.yaml file: environment: LD_LIBRARY_PATH: $LD_LIBRARY_PATH:$SNAP/usr/lib/x86_64-linux-gnu/blas:$SNAP/usr/lib/x86_64-linux-gnu/lapack My setup is: - VirtualBox running Ubuntu Eoan (x86_64) - Latest snapcraft from snap - Using lxd based build I assume the issue is that these libraries use a sub-directory and thus this could be a general issue in the packaging process of libraries. The issue doesn't come up when using numpy from python-packages, but this is no option when using complex dependencies like wxpython that need binary packages and depend on numpy.

Evaluation history

Date	Model	Scores	Action	Summary
2026-10-02 07:39 PM UTC	stealth/space-bunny-alpha	Impact: 55 Quick Win: 16 Complexity: 58 Confidence: 72 Actionability: 70	needs triage	Numpy staged via stage-packages fails at runtime because libblas.so.3 and liblapack.so.3 sit in nested blas/lapack directories outside the library search path; the old issue is untriaged.
2026-09-24 07:43 PM UTC	stealth/space-bunny-alpha	Impact: 48 Quick Win: 22 Complexity: 35 Confidence: 78 Actionability: 72	needs triage	A 2019 report says python3-numpy from stage-packages fails because BLAS/LAPACK in architecture-specific subdirectories are absent from LD_LIBRARY_PATH. No maintainer response or reproducer was recorded; current docs prescribe configuring the app's LD_LIBRARY_PATH.
2026-09-01 09:18 AM UTC	qwen/qwen3.8-27b	Impact: 20 Quick Win: 12 Staleness: 95 Complexity: 40 Confidence: 70 Support Request: 55	close stale	2019 report that stage-packages python3-numpy fails at runtime because libblas/liblapack live in subdirectories not on the library search path; reporter found an LD_LIBRARY_PATH workaround. No labels, comments, or maintainer activity in 6.5 years.
2026-07-23 02:09 PM UTC	qwen/qwen3.6-35b-a3b	Staleness: 98 Complexity: 35 Confidence: 85 Support Request: 20	close stale	Build failure when using python3-numpy in stage-packages due to missing BLAS/LAPACK libraries in LD_LIBRARY_PATH. Unresolved for over 6 years with no maintainer response.
2026-07-22 01:26 PM UTC	qwen/qwen3.6-35b-a3b	Staleness: 98 Complexity: 45 Confidence: 95 Support Request: 60	close stale	Reports numpy stage-packages failing at runtime due to missing BLAS/LAPACK library paths in snapcraft. Provides a workaround. Unaddressed for over 6 years on an EOL Ubuntu release.
2026-07-10 04:48 AM UTC	qwen3.6-35b-a3b-mtp-q6	Staleness: 95 Complexity: 35 Confidence: 85 Support Request: 25	close stale	Runtime failure when importing numpy from stage-packages due to unresolved BLAS/LAPACK library paths. Issue has zero comments, no labels, and has been inactive for over six years.

Update history

Date	Change
2020-02-09 01:27 PM UTC	created

Related work

Related To: snapcraft#462 (confidence 65%)
Historical commit a983e470b added SNAP_LIBRARY_PATH to LD_LIBRARY_PATH, providing related context but no evidence that it fixed nested blas/lapack paths.

Related issues

No related issues found above the similarity threshold.