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fix(eval): run tar with relative paths so the SWE-chat harness works on Windows #164

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Merged
kushalpatil07 merged 1 commit into from
Jul 29, 2026
+7 −3
Merged

fix(eval): run tar with relative paths so the SWE-chat harness works on Windows #164

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6 changes: 4 additions & 2 deletions evals/swechat-plan/build-memory.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ import {
writeFileSync,
} from "node:fs";
import { homedir } from "node:os";
import { dirname, resolve } from "node:path";
import { dirname, relative, resolve } from "node:path";
import { fileURLToPath } from "node:url";
import {
type CommandResult,
Expand Down Expand Up @@ -236,7 +236,9 @@ async function prepareTargetRepo(context: Context): Promise<void> {
const response = await fetch(`https://codeload.github.com/${context.config.repo.full_name}/tar.gz/${context.config.repo.base_commit}`);
if (!response.ok) throw new Error(`Failed to download base archive: ${response.status} ${response.statusText}`);
writeFileSync(archivePath, Buffer.from(await response.arrayBuffer()));
const extract = run(["tar", "-xzf", archivePath, "-C", extractDir], context.repoRoot, process.env);
// Run tar from the run directory with relative paths: GNU tar interprets
// absolute Windows paths ("C:\...") as remote host specs and fails.
const extract = run(["tar", "-xzf", relative(context.runDir, archivePath), "-C", relative(context.runDir, extractDir)], context.runDir, process.env);
if (extract.exit_code !== 0) throw new Error(`Failed to extract base archive: ${extract.stderr ?? extract.stdout ?? ""}`);
const roots = readdirSync(extractDir, { withFileTypes: true }).filter((entry) => entry.isDirectory());
if (roots.length !== 1) throw new Error(`Expected one archive root in ${extractDir}, found ${roots.length}`);
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4 changes: 3 additions & 1 deletion evals/swechat-plan/run.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -277,7 +277,9 @@ async function prepareTargetRepo(context: RunContext): Promise<CommandResult[]>
const response = await fetch(`https://codeload.github.com/${context.config.repo.full_name}/tar.gz/${context.config.repo.base_commit}`);
if (!response.ok) throw new Error(`Failed to download base archive: ${response.status} ${response.statusText}`);
writeFileSync(archivePath, Buffer.from(await response.arrayBuffer()));
const extract = run(["tar", "-xzf", archivePath, "-C", extractDir], context.repoRoot, process.env);
// Run tar from the run directory with relative paths: GNU tar interprets
// absolute Windows paths ("C:\...") as remote host specs and fails.
const extract = run(["tar", "-xzf", relative(context.runDir, archivePath), "-C", relative(context.runDir, extractDir)], context.runDir, process.env);
if (extract.exit_code !== 0) throw new Error(`Failed to extract base archive: ${extract.stderr ?? extract.stdout ?? ""}`);
const roots = readdirSync(extractDir, { withFileTypes: true }).filter((entry) => entry.isDirectory());
if (roots.length !== 1) throw new Error(`Expected one archive root in ${extractDir}, found ${roots.length}`);
Expand Down