4 ms·

Can you expand on this? How do you achieve it? Just a WIP JJ commit after every change or something more clever?

by eproxus 6mo ago

Meleagris 6mo ago
In .claude/settings.json you can trigger shell commands on events like SessionStart, Stop, PreCompact, and PostToolUse [1]. I have all of them run `jj status`, because jj snapshots the working copy every time it's invoked. You can have Claude write the hooks, but mine is: `[[ -d .jj ]] && jj status >/dev/null 2>&1; exit 0` [1] https://code.claude.com/docs/en/agent-sdk/hooks https://code.claude.com/docs/en/agent-sdk/hooks
dwb 6mo ago
"hooks": { "PreToolUse": [ { "matcher": "Edit|Write", "hooks": [ { "type": "command", "command": "if command -v jj >/dev/null && jj root >/dev/null 2>&1; then if ! jj status >/dev/null 2>&1; then echo 'WARNING: failed to snapshot jj repository, tell user to fix'; fi; fi" } ] } ], "PostToolUse": [ { "matcher": "Edit|Write", "hooks": [ { "type": "command", "command": "if command -v jj >/dev/null && jj root >/dev/null 2>&1; then if ! jj status >/dev/null 2>&1; then echo 'WARNING: failed to snapshot jj repository, tell user to fix'; fi; fi" } ] }, In newer jj there’s a dedicated snapshot command but I’ve not updated yet. Pop this in your Claude Code settings.json. It will snapshot the repository, thus recording any changes. Explore with jj evolog.
steveklabnik 6mo ago
The others use `jj status`, but if I were to do this, I'd use `jj log -n0`, which has no output. All you really need is any read-only jj command. You could also turn on watchman and have this property on every save of a file and not even need to worry about hooks.
- yencabulator 6mo ago
  `jj util snapshot` sounds like it was meant for this.
  - steveklabnik 6mo ago
    I know there was a debug command that would do it, but that was considered an unstable interface. That sounds like a better command, I’ll have to check it out, thanks!

Can you expand on this? How do you achieve it? Just a WIP JJ commit after every change or something more clever?

by eproxus 6mo ago

Can you expand on this? How do you achieve it? Just a WIP JJ commit after every change or something more clever?

In .claude/settings.json you can trigger shell commands on events like SessionStart, Stop, PreCompact, and PostToolUse [1]. I have all of them run `jj status`, because jj snapshots the working copy every time it's invoked. You can have Claude write the hooks, but mine is: `[[ -d .jj ]] && jj status >/dev/null 2>&1; exit 0` [1] https://code.claude.com/docs/en/agent-sdk/hooks https://code.claude.com/docs/en/agent-sdk/hooks

dwb 6mo ago

"hooks": { "PreToolUse": [ { "matcher": "Edit|Write", "hooks": [ { "type": "command", "command": "if command -v jj >/dev/null && jj root >/dev/null 2>&1; then if ! jj status >/dev/null 2>&1; then echo 'WARNING: failed to snapshot jj repository, tell user to fix'; fi; fi" } ] } ], "PostToolUse": [ { "matcher": "Edit|Write", "hooks": [ { "type": "command", "command": "if command -v jj >/dev/null && jj root >/dev/null 2>&1; then if ! jj status >/dev/null 2>&1; then echo 'WARNING: failed to snapshot jj repository, tell user to fix'; fi; fi" } ] }, In newer jj there’s a dedicated snapshot command but I’ve not updated yet. Pop this in your Claude Code settings.json. It will snapshot the repository, thus recording any changes. Explore with jj evolog.

steveklabnik 6mo ago

The others use `jj status`, but if I were to do this, I'd use `jj log -n0`, which has no output. All you really need is any read-only jj command. You could also turn on watchman and have this property on every save of a file and not even need to worry about hooks.

yencabulator 6mo ago
`jj util snapshot` sounds like it was meant for this.
- steveklabnik 6mo ago
  I know there was a debug command that would do it, but that was considered an unstable interface. That sounds like a better command, I’ll have to check it out, thanks!