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A snapshot: read at commit 707a04c7ce8 on 2026-10-18T00:06:01Z by majordomus 0.29.0. Nothing on this page is read again. See it live

I2713

A build never lets idle incremental sessions fill the disk

Where it stands

devtask.issue
Readiness
ready no dependency and no gate holds it; nobody has started it
Status
READY
Can start
startable
Milestone
Milestone status
ACTIVE
Wave
0
Waiting on
none
Holds back
Behind it in all
1
Evidence
0 of 1
A move writes the repository: it stamps one field of this issue's record and appends one event to the ledger, and a commit will carry both.
The same moves from a terminal

majordomus plan start I2713

majordomus plan verify I2713

majordomus plan done I2713

What it is

Objective
Make the repository's own build entry points keep a build directory's incremental cache bounded, so that concurrent sessions building on one machine cannot run the disk out.
Why
2026-10-14 16:20-17:57Z: free disk on the shared Mac fell from 71 GiB to 4 GiB; derive refused (\"4935MB free, floor 5120MB\") and every session's chain stopped. One private build directory had grown from 21 to 47 GiB, 24 GiB of it debug/incremental: 574 session directories of which one was live. Deleting the idle ones by hand gave back 16 GiB with a compile still running. The owner: \"tohle se nesmi stavat\".
Now
lib/rust_bin.sh's bounded build refuses below a free-space floor but never reclaims; cargo keeps every finished incremental session until a clean.
Wanted
Before a build starts (mj_cargo_bounded and every script that builds through it), idle incremental session directories of its build directory older than a declared age are removed (never one ending in -working, never another tree's build directory), what was reclaimed is said on stderr, and when free space is still under the declared floor the build refuses with the largest build directories named.
Done when
unknown: the record declares no `completion`
Risk
unknown: the record declares no `risk`

Acceptance

  • A build prunes idle incremental sessions of its own build directory and says how much it reclaimed
  • A live (-working) session and other build directories are never touched
  • Under the floor after pruning, the refusal names the largest build directories
Validation
bin/majordomus plan validate
Evidence required
idle_sessions_are_pruned_case
Evidence present
unknown: the record carries no `evidence` entries

Scope

Touches
lib/rust_bin.shscripts/derivedocs/DEVELOPMENT_RUNTIME.md.ai/repo/policy.yamltest/cases
Not
Deleting another worktree's build output or any target directory
Depends on
none
Priority
p0
Profile
implementation
Parallel safe
true
Owner
unknown: the record declares no `owner`

The work so far

Branches
none
Merged
none
Commits
0
Trunk
master
Sessions
none
Created
2026-10-14
Updated
2026-10-14
Started
unknown: the record declares no `started_at`
Verified
unknown: the record declares no `verified_at`
Completed
unknown: the record declares no `completed_at`

Synchronisation

Adapter
scripts/github-sync
Repository
unknown: the derived plan's header carries no repository
External issue
unknown: a live GitHub state; this executable makes no network call, so only `scripts/github-sync --check` can answer it
State there
unknown: a live GitHub state; this executable makes no network call, so only `scripts/github-sync --check` can answer it

Findings

LevelCodeMessageReproduce
WARNscope_conflictshares lib/rust_bin.sh with I2714; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2716; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2717; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2718; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2720; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2723; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares docs/DEVELOPMENT_RUNTIME.md with I2731; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2734; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2740; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2742; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2747; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2760; they may not run concurrentlymajordomus plan validate
WARNscope_conflictshares test/cases with I2786; they may not run concurrentlymajordomus plan validate