47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
# Textual constants.py — TEXTUAL_THEME environment default
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## Metadata
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| Field | Value |
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| Institute | Molodetz Institute — Research & Retrieval Division |
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| Subject | tui-framework-design |
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| Document type | Source Dossier |
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| Tier | 1 |
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| Source title | Textual src/textual/constants.py — TEXTUAL_THEME env handling |
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| Source URL | https://raw.githubusercontent.com/Textualize/textual/main/src/textual/constants.py |
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| Source publisher / author | Textualize (Textual project) |
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| Source type | repository |
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| Source date (published) | Unknown — not stated |
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| Date researched | 2026-10-11 |
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| Researched by | tai (agent), model: Muse Spark, on behalf of retoor |
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| Research method | direct page fetch |
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| Confidence | Medium |
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| Status | Active |
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## Summary
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A thin source with one finding: the `TEXTUAL_THEME` environment variable sets the default theme, taking a first-existing-wins list. It exists here as the precedent for tai's `TAI_THEME` variable.
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## Key findings
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- `TEXTUAL_THEME` sets the default theme from the environment, accepting a list where the first existing theme wins.
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## Pros / strengths
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- Env-var default with first-existing-wins fallback is a small, robust precedence mechanism worth copying exactly.
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## Cons / limitations / caveats
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- Thin source: one mechanism only, no interaction with flags or runtime switching visible here.
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## Relevance to tai
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- Direct precedent for the palette-role conclusion's precedence chain (flag > `TAI_THEME` env var > default).
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## Changelog
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| Date | Change |
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|---|---|
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| 2026-10-11 | Initial dossier created from 2026-10-11 research-pass evidence (body opened via web_fetch by researching agent). |
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