Migrate ITables Streamlit component to st.components.v2

[Copilot]

ITables' Streamlit integration was using the v1 custom component API. This migrates it to st.components.v2, which renders inline (no iframe) and uses a cleaner function-based lifecycle.

Frontend (packages/itables_for_streamlit/)

• Build: Replaced Create React App with esbuild (matching the anywidget package pattern); CSS extracted to src/index.css
• Dependency: streamlit-component-lib → @streamlit/component-v2-lib (types only — v2 runtime is provided by the Streamlit host)
• API: Rewrote index.tsx from event-based v1 (RENDER_EVENT / setComponentValue / setFrameHeight) to a v2 FrontendRenderer default export that creates the table on mount and returns a cleanup function

const ITableForStreamlit: FrontendRenderer<ITableState, ITableData> = (component) => {
  const { data, parentElement, setStateValue } = component;
  // ... create DataTable, wire select/deselect → setStateValue('selected_rows', ...)
  return () => { dt.destroy(); span.remove(); };
};
export default ITableForStreamlit;

Python (src/itables/streamlit.py)

• declare_component(name, path=...) → components.v2.component(name, js=..., css=..., isolate_styles=False)
• JS/CSS loaded as inline strings at import time (avoids Streamlit runtime dependency during manifest discovery)
• isolate_styles=False keeps styles in the main DOM — required for DataTables popups/fixed-header elements that are appended to document.body
• Arguments now passed via data={"dt_args": ..., "other_args": ...}; return type is BidiComponentResult (dict-like, backwards-compatible access via result["selected_rows"] or result.selected_rows)

Config & Housekeeping

• pyproject.toml: Added [tool.streamlit.component] manifest entry; updated ensured-targets for the new output filenames
• apps/streamlit/itables_app.py: Replaced MarshallComponentException (v1-only) with StreamlitAPIException
• .github/dependabot.yml: Added Dependabot configuration with grouped updates for pip, each npm package directory, and GitHub Actions
• src/itables/version.py: Bumped version to 2.8.0.dev0
• docs/changelog.md: Added 2.8.0 (unreleased) entry for this migration
• pixi.lock: Updated to reflect the new development version

Note on CSS build: The CSS is built without --minify intentionally. Minified single-line CSS containing * selectors is misclassified as a glob pattern by Streamlit's inline-content heuristic, causing registration to fail.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Transition ITables' streamlit component to st.components.v2</issue_title>
<issue_description>ITables currently uses streamlit's v1 component, but v2 has shipped. Can we upgrade our component to v2?</issue_description>

<agent_instructions>Our ITable component for Streamlit was developped using Streamlit's custom component in v1. Now a version 2 is available.

A template for custom v2 components is available here: https://github.com/streamlit/component-template

The options offered by V2 are compared to V1 on this page: https://docs.streamlit.io/develop/api-reference/custom-components</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Transition ITables' streamlit component to st.components.v2 #511

---

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.28%. Comparing base (413bb74) to head (6b998a6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #521      +/-   ##
==========================================
+ Coverage   94.26%   94.28%   +0.01%     
==========================================
  Files          47       47              
  Lines        2617     2623       +6     
==========================================
+ Hits         2467     2473       +6     
  Misses        150      150              

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[github-actions]

Thank you for making this pull request.

Did you know? You can try it on Binder: .

Also, the version of ITables developed in this PR is available as a wheel artifact 📦 for easy installation.
Download it here, unzip it and then run pip install itables-xxx.whl in the unzipped directory.

A conda package is also available for easy installation:
Download it here, and then run conda install itables-xxx.tar.bz2 in the directory where you downloaded the file.

[mwouts]

@copilot Can you group the dependabot alerts ?

[Copilot]

@copilot Can you group the dependabot alerts ?

Added .github/dependabot.yml in commit b531783. It groups updates by ecosystem:

• pip: all Python dependencies grouped into one PR
• npm: each package directory (dt_for_itables, itables_anywidget, itables_for_dash, itables_for_streamlit) grouped separately
• github-actions: all Actions updates grouped into one PR

[mwouts]

@copilot You should rebase on main. Also, can you start a new development version - bump the version number to 2.8.0.dev0 and add an entry in the changelog ? Finally you need to fix the CI (update the pixi lock file and commit it).

[mwouts]

@copilot the CI failed. It says

 Error:   × lock-file not up-to-date with the workspace

Can you make sure to activate pre-commit before you commit? (Can you add this instruction to an agent file maybe?)

[Copilot]

@copilot You should rebase on main. Also, can you start a new development version - bump the version number to 2.8.0.dev0 and add an entry in the changelog ? Finally you need to fix the CI (update the...

Done in commit d450efe:

• Rebased onto main
• Bumped version to 2.8.0.dev0 in src/itables/version.py
• Added a 2.8.0 (unreleased) entry in docs/changelog.md
• Updated pixi.lock with the new version and sha256 for the local itables package

Note: pixi lock couldn't fully re-solve all platforms in this environment (network restrictions prevented downloading osx-arm64 conda packages), so the version/sha256 in pixi.lock were updated manually. The CI's pytest-pixi-updated job will run pixi update which will regenerate fully.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• pixi.sh
  • Triggering command: /usr/bin/curl curl -fsSL REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[mwouts]

I have reported the issue with pixi install --locked observed on the CI at prefix-dev/pixi#6136