Reapply

Reapply & Diff

Safely synchronize existing projects with a new template version.

Prerequisites

• Target directory was previously rendered with Tempify
• .tempify-lock.json is in the target (or is managed)
• Same template ID as in the lock file

Diff (display only)

tempify basic_cpp my-app --diff
tempify basic_cpp my-app --diff --json

• No file changes
• No hooks
• Shows changes to managed files, origin metadata, update kind

Reapply (apply)

# Report only
tempify reapply basic_cpp my-app --report --json
# Apply
tempify reapply basic_cpp my-app --json

Alias:

tempify basic_cpp my-app --reapply

What reapply does

• Applies safe actions: create, update, delete on managed files
• Keeps local edits with action keep
• Blocks on conflict or review
• Does not run hooks (first slice)

Version policy

Transition	Typical
Patch / prerelease	Allowed
Major	Blocked → review
Pre-1.0 minor	Blocked → review
Downgrade	Blocked
Different template (ID mismatch)	Blocked

JSON example (success)

{
"status": "ok",
"mode": "reapply",
"template": { "id": "basic_cpp", "version": "0.1.0" },
"origin": {
"detected": true,
"matches_requested_template": true,
"template_id": "basic_cpp",
"template_version": "0.1.0-rc.1"
},
"update": {
"kind": "upgrade",
"from_version": "0.1.0-rc.1",
"to_version": "0.1.0",
"policy": {
"action": "allow",
"reason": "forward_version_change"
}
}
}

JSON example (blocked)

{
"status": "error",
"code": "REAPPLY_BLOCKED",
"blocked": {
"origin_mismatch": {
"origin_template": { "id": "layered_cpp_product" },
"requested_template": { "id": "basic_cpp" }
}
}
}

Authors

Versioning for safe reapply: Versioning & Reapply

See also

Glossary · FAQ