fix: resolve relative path sources in --sandbox uv export

[VishakBaddur]

Fixes #8980

Problem

marimo edit --sandbox fails when a script's inline metadata uses relative path sources in [tool.uv.sources]. uv export --script returns paths relative to the script file, but those lines get written to a temp requirements file. When uv run --with-requirements processes that file, it resolves paths relative to CWD - not the script's directory - causing path resolution failures.

Fix

In _uv_export_script_requirements_txt (marimo/_cli/sandbox.py), convert any relative paths (.-prefixed) to absolute paths using the script's parent directory as the base. Handles both editable (-e ../../) and non-editable (../../) path sources. Non-path deps and already-absolute paths are left unchanged.

Test

Added test_uv_export_script_requirements_txt_resolves_relative_paths covering:

• Editable relative paths (-e ../../) → resolved to absolute
• Non-editable relative paths (../other_pkg) → resolved to absolute
• Regular deps (numpy==1.26.0) → unchanged
• Already-absolute paths → unchanged

[vercel]

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Project	Deployment	Actions	Updated (UTC)
marimo-docs	Ready	Preview, Comment	Apr 22, 2026 9:36pm

[codecov]

Bundle Report

Bundle size has no change ✅

Affected Assets, Files, and Routes:

view changes for bundle: marimo-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
assets/dist-*.js	27 bytes	164 bytes	19.71% ⚠️
assets/dist-*.js	-79 bytes	104 bytes	-43.17%
assets/dist-*.js	-39 bytes	137 bytes	-22.16%
assets/dist-*.js	82 bytes	259 bytes	46.33% ⚠️
assets/dist-*.js	-33 bytes	104 bytes	-24.09%
assets/dist-*.js	-174 bytes	102 bytes	-63.04%
assets/dist-*.js	152 bytes	335 bytes	83.06% ⚠️
assets/dist-*.js	-220 bytes	183 bytes	-54.59%
assets/dist-*.js	-119 bytes	137 bytes	-46.48%
assets/dist-*.js	-158 bytes	177 bytes	-47.16%
assets/dist-*.js	299 bytes	403 bytes	287.5% ⚠️
assets/dist-*.js	79 bytes	183 bytes	75.96% ⚠️
assets/dist-*.js	96 bytes	256 bytes	60.0% ⚠️
assets/dist-*.js	-218 bytes	169 bytes	-56.33%
assets/dist-*.js	223 bytes	387 bytes	135.98% ⚠️
assets/dist-*.js	58 bytes	160 bytes	56.86% ⚠️
assets/dist-*.js	107 bytes	276 bytes	63.31% ⚠️
assets/dist-*.js	-83 bytes	176 bytes	-32.05%
assets/__vite-*.js	5 bytes	98 bytes	5.38% ⚠️
assets/__vite-*.js	-5 bytes	93 bytes	-5.1%

[Copilot]

Pull request overview

Fixes sandbox failures when uv export --script emits relative local path requirements by rewriting those paths to be absolute based on the script’s directory before writing the temp requirements file used by uv run --with-requirements.

Changes:

• Resolve .-prefixed path requirement lines from uv export --script into absolute paths in the sandbox CLI.
• Add a regression test covering editable and non-editable relative path lines as well as unchanged “normal” and already-absolute deps.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
marimo/_cli/sandbox.py	Converts relative path lines from uv export --script output to absolute paths rooted at the script directory.
tests/_cli/test_sandbox.py	Adds a unit test to ensure relative paths in exported requirements are resolved correctly.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[dmadisetti]

@VishakBaddur Thanks! The helper function means we can test directly

[dmadisetti]

Thanks @VishakBaddur !

[github-actions]

🚀 Development release published. You may be able to view the changes at https://marimo.app?v=0.23.3-dev37