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Merged
snshn merged 1 commit into from
Oct 15, 2026
Merged

Move Windows data dir under %LocalAppData% #5

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4 changes: 2 additions & 2 deletions ARCHITECTURE.md
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Expand Up @@ -239,9 +239,9 @@ Planned dependencies (to be added as each part is implemented):
| System service | `/etc/lost/lost.toml` | `/var/lib/lost/.lost/` (`lost.service` sets `HOME=/var/lib/lost`) |
| User (Linux, BSD) | `~/.lost/lost.toml` | `~/.lost/` |
| User (macOS) | `~/Library/Application Support/LOST/lost.toml` | `~/Library/Application Support/LOST/` |
| User (Windows) | `%USERPROFILE%\LOST\lost.toml` | `%USERPROFILE%\LOST\` |
| User (Windows) | `%LOCALAPPDATA%\LOST\lost.toml` | `%LOCALAPPDATA%\LOST\` |

One folder per user holds both config and data. It's created readable by its owner only, since it also holds the signing key (§9.2).
One folder per user holds both config and data. It's created readable by its owner only, since it also holds the signing key (§9.2). On Windows it's in `AppData\Local` (`C:\Users\NAME\AppData\Local\LOST\`), as Bitcoin Core's is since 28.0: unlike `AppData\Roaming`, it's never copied to a server by roaming profiles, which matters for a big database and for a key that shouldn't leave the computer.

Configuration precedence: command-line flag → the user's `lost.toml` → `/etc/lost/lost.toml` → built-in default.

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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -124,7 +124,7 @@ It obeys robots.txt, asks each server for one thing a second (`--delay`), and sa
### Database

The local database is stored by default either in `~/.lost/` (Linux, BSD), `~/Library/Application Support/LOST/` (macOS),
or `%USERPROFILE%\LOST\` (Windows).
or `%LOCALAPPDATA%\LOST\` (Windows, i.e. `C:\Users\NAME\AppData\Local\LOST\`).


## Building
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2 changes: 1 addition & 1 deletion dist/lost.toml
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@@ -1,6 +1,6 @@
# LOST configuration.
# System-wide: /etc/lost/lost.toml. Per user: ~/.lost/lost.toml (Linux/BSD),
# ~/Library/Application Support/LOST/lost.toml (macOS), %USERPROFILE%\LOST\lost.toml (Windows).
# ~/Library/Application Support/LOST/lost.toml (macOS), %LOCALAPPDATA%\LOST\lost.toml (Windows).
# Every key is optional; command-line flags override this file.

[server]
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8 changes: 6 additions & 2 deletions src/config.rs
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Expand Up @@ -114,10 +114,14 @@ impl Default for GuiConfig {

/// The per-user folder that holds both config and data:
/// `~/.lost` (Linux, BSD), `~/Library/Application Support/LOST` (macOS),
/// `%USERPROFILE%\LOST` (Windows).
/// `%LOCALAPPDATA%\LOST` (Windows: `AppData\Local`, which roaming
/// profiles never copy to a server, unlike `AppData\Roaming`; the database
/// can be big, and the signing key shouldn't leave the computer).
pub fn user_dir() -> Option<PathBuf> {
if cfg!(windows) {
std::env::var_os("USERPROFILE").map(|home| PathBuf::from(home).join("LOST"))
std::env::var_os("LOCALAPPDATA")
.filter(|dir| !dir.is_empty())
.map(|dir| PathBuf::from(dir).join("LOST"))
} else {
let home = PathBuf::from(std::env::var_os("HOME").filter(|h| !h.is_empty())?);
if cfg!(target_os = "macos") {
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