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perf(discovery): memoized WSL host-home probe per environment

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- Deduplicated the re-imported changelog bullets from the PR #8403 merge,
  keeping the condensed register with only the new #8402 entry.
- getUserHomeCandidates memoizes the WSL home candidate keyed by
  platform + WSL markers + USERPROFILE, so a wedged interop pipe costs
  one bounded probe per process instead of one 500ms stall per
  discovery loader, while env changes (tests, SDK embeddings) still
  recompute.
This commit is contained in:
can1357
2026-08-13 06:51:35 +02:00
parent b47e3e8e35
commit a69d166e00
8 changed files with 83 additions and 64 deletions
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scripts/gen-nix-bun.ts
+20 -10
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@@ -6,20 +6,30 @@ import { $which } from "../packages/utils/src/which";
const repoRoot = path.join(import.meta.dir, "..");
type FindExecutable = (command: string) => string | null;
/** The executable path and invocation mode for the pinned Bun dependency generator. */
export type NixBunDepsGenerator = { kind: "bun2nix"; executable: string } | { kind: "nix"; executable: string };
/** Resolve the generator needed by releases before they mutate repository state. */
export function resolveNixBunDepsGenerator(findExecutable: FindExecutable = $which): NixBunDepsGenerator {
const bun2nix = findExecutable("bun2nix");
if (bun2nix) return { kind: "bun2nix", executable: bun2nix };
const nix = findExecutable("nix");
if (nix) return { kind: "nix", executable: nix };
throw new Error("Generating nix/bun.nix requires bun2nix from `nix develop`, or Nix to enter that shell.");
}
/** Regenerate the checked-in Bun dependency expression with the pinned bun2nix input. */
export async function generateNixBunDeps(): Promise<void> {
const bun2nix = $which("bun2nix");
if (bun2nix) {
await $`${bun2nix} -l bun.lock -c ../ -o nix/bun.nix`.cwd(repoRoot);
export async function generateNixBunDeps(generator: NixBunDepsGenerator = resolveNixBunDepsGenerator()): Promise<void> {
if (generator.kind === "bun2nix") {
await $`${generator.executable} -l bun.lock -c ../ -o nix/bun.nix`.cwd(repoRoot);
return;
}
const nix = $which("nix");
if (!nix) {
throw new Error("Generating nix/bun.nix requires bun2nix from `nix develop`, or Nix to enter that shell.");
}
await $`${nix} --extra-experimental-features ${"nix-command flakes"} --accept-flake-config develop --command bun2nix -l bun.lock -c ../ -o nix/bun.nix`.cwd(
await $`${generator.executable} --extra-experimental-features ${"nix-command flakes"} --accept-flake-config develop --command bun2nix -l bun.lock -c ../ -o nix/bun.nix`.cwd(
repoRoot,
);
}