{"record":{"id":"af8658fc8ccb8838","repo":"earendil-works/pi","slug":"nothing-to-compact-session-too-small","errorCode":null,"errorMessage":"Nothing to compact (session too small)","messagePattern":"Nothing to compact \\(session too small\\)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/coding-agent/src/core/agent-session.ts","lineNumber":1887,"sourceCode":"\n\t\ttry {\n\t\t\tif (!this.model) {\n\t\t\t\tthrow new Error(formatNoModelSelectedMessage());\n\t\t\t}\n\n\t\t\tconst { model: requestModel, apiKey, headers, env } = await this._getSummarizationRequestAuth(this.model);\n\n\t\t\tconst pathEntries = this.sessionManager.getBranch();\n\t\t\tconst settings = this.settingsManager.getCompactionSettings();\n\n\t\t\tconst preparation = prepareCompaction(pathEntries, settings);\n\t\t\tif (!preparation) {\n\t\t\t\t// Check why we can't compact\n\t\t\t\tconst lastEntry = pathEntries[pathEntries.length - 1];\n\t\t\t\tif (lastEntry?.type === \"compaction\") {\n\t\t\t\t\tthrow new Error(\"Already compacted\");\n\t\t\t\t}\n\t\t\t\tthrow new Error(\"Nothing to compact (session too small)\");\n\t\t\t}\n\n\t\t\tlet extensionCompaction: CompactionResult | undefined;\n\n\t\t\tif (this._extensionRunner.hasHandlers(\"session_before_compact\")) {\n\t\t\t\tconst result = (await this._extensionRunner.emit({\n\t\t\t\t\ttype: \"session_before_compact\",\n\t\t\t\t\tpreparation,\n\t\t\t\t\tbranchEntries: pathEntries,\n\t\t\t\t\tcustomInstructions,\n\t\t\t\t\treason: \"manual\",\n\t\t\t\t\twillRetry: false,\n\t\t\t\t\tsignal: this._compactionAbortController.signal,\n\t\t\t\t})) as SessionBeforeCompactResult | undefined;\n\n\t\t\t\tif (result?.cancel) {\n\t\t\t\t\tthrow new Error(\"Compaction cancelled\");\n\t\t\t\t}","sourceCodeStart":1869,"sourceCodeEnd":1905,"githubUrl":"https://github.com/earendil-works/pi/blob/4af9d21d3b4d664e4a29fcabfec85171077248e3/packages/coding-agent/src/core/agent-session.ts#L1869-L1905","documentation":"Error \"Nothing to compact (session too small)\" thrown in earendil-works/pi.","triggerScenarios":"Thrown at packages/coding-agent/src/core/agent-session.ts:1887 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"4af9d21d3b4d664e4a29fcabfec85171077248e3","analyzedAt":"2026-08-24T13:07:14.692Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}