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Configuration
Ghostty and Fastfetch editors with preview, validation and history.
Configuration edits your Ghostty terminal and Fastfetch settings with visual controls, a live preview, validation and a full history. Pick the app from the Application dropdown.
The editor always works on your editable source file (set in Settings → System integrations). It never edits generated files in /nix/store. If Home Manager owns the live file, the page says so. Save your edits here, then use System Sync → Apply Home Manager to activate them.
You can edit in two ways, and they stay in sync:
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Controls: form fields for common settings.
- Ghostty: font family and size, theme, window padding, background opacity, cursor style. Click Apply controls to draft.
- Fastfetch: logo source and type and the separator (Apply logo & separator), plus the module list: move modules up or down, remove them, or Add module.
- Source configuration: the raw file in a text editor, for anything the controls don't cover.
Changes stay in a draft until you save. Preview shows roughly how the result will look: font, padding and opacity for Ghostty, the module list for Fastfetch. It's an illustration, not a real terminal. Fastfetch command modules are never run in the preview.
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Validate checks the draft. Ghostty uses its own
ghostty +validate-config; Fastfetch checks the JSONC syntax and module structure. - Review & save shows the current and new content side by side.
- On confirm, the app saves a backup of the current file, then writes the new one in a single step.
Note
If the file changed on disk after you loaded it (say, you edited it in another editor), saving stops and asks you to reload rather than overwrite that change. Reload file discards your draft and loads the file from disk again.
Your edits keep everything else in the file: Ghostty keeps unrelated lines, and Fastfetch keeps comments and custom module options.
Configuration history lists the last 100 saved versions for the selected app.
- Select a version and click Compare to see it next to your current draft.
- Review restore to draft loads that version into the editor as a draft. Nothing is written until you Review & save.
Every save also appears in the Change timeline.
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