fix: installing big git-hosted packages

close #4064

.changeset/blue-crabs-sparkle.md

@@ -0,0 +1,9 @@
+---
+"@pnpm/git-fetcher": patch
+"@pnpm/tarball-fetcher": patch
+"pnpm": patch
+---
+
+Fixes a regression introduced in pnpm v6.23.3 via [#4044](https://github.com/pnpm/pnpm/pull/4044).
+
+The temporary directory to which the Git-hosted package is downloaded should not be removed prematurely [#4064](https://github.com/pnpm/pnpm/issues/4064).

packages/git-fetcher/src/index.ts

@@ -24,7 +24,9 @@ export default () => {
       // removing /.git to make directory integrity calculation faster
       await rimraf(path.join(tempLocation, '.git'))
       const filesIndex = await cafs.addFilesFromDir(tempLocation, opts.manifest)
-      await rimraf(tempLocation)
+      // Important! We cannot remove the temp location at this stage.
+      // Even though we have the index of the package,
+      // the linking of files to the store is in progress.
       return { filesIndex }
     },
   }

packages/git-fetcher/test/index.ts

@@ -63,4 +63,18 @@ test('fetch a package without a package.json', async () => {
     }
   )
   expect(filesIndex['denolib.json']).toBeTruthy()
-})
+})
+
+// Covers the regression reported in https://github.com/pnpm/pnpm/issues/4064
+test('fetch a big repository', async () => {
+  const cafsDir = tempy.directory()
+  const fetch = createFetcher().git
+  const manifest = pDefer<DependencyManifest>()
+  const { filesIndex } = await fetch(createCafsStore(cafsDir),
+    {
+      commit: 'a65fbf5a90f53c9d72fed4daaca59da50f074355',
+      repo: 'https://github.com/sveltejs/action-deploy-docs.git',
+      type: 'git',
+    }, { manifest })
+  await Promise.all(Object.values(filesIndex).map(({ writeResult }) => writeResult))
+})

packages/tarball-fetcher/package.json

@@ -41,7 +41,6 @@
     "@pnpm/graceful-fs": "workspace:1.0.0",
     "@pnpm/prepare-package": "workspace:1.0.7",
     "@zkochan/retry": "^0.2.0",
-    "@zkochan/rimraf": "^2.1.1",
     "ramda": "^0.27.1",
     "ssri": "^8.0.1"
   },

packages/tarball-fetcher/src/createDownloader.ts

@@ -12,7 +12,6 @@ import {
 import { FetchFromRegistry } from '@pnpm/fetching-types'
 import preparePackage from '@pnpm/prepare-package'
 import * as retry from '@zkochan/retry'
-import rimraf from '@zkochan/rimraf'
 import fromPairs from 'ramda/src/fromPairs'
 import omit from 'ramda/src/omit'
 import ssri from 'ssri'
@@ -248,7 +247,9 @@ async function prepareGitHostedPkg (filesIndex: FilesIndex, cafs: Cafs) {
   })
   await preparePackage(tempLocation)
   const newFilesIndex = await cafs.addFilesFromDir(tempLocation)
-  await rimraf(tempLocation)
+  // Important! We cannot remove the temp location at this stage.
+  // Even though we have the index of the package,
+  // the linking of files to the store is in progress.
   return newFilesIndex
 }
 

packages/tarball-fetcher/test/download.ts

@@ -353,3 +353,16 @@ test('accessing private packages', async () => {
 async function getFileIntegrity (filename: string) {
   return (await ssri.fromStream(fs.createReadStream(filename))).toString()
 }
+
+// Covers the regression reported in https://github.com/pnpm/pnpm/issues/4064
+test('fetch a big repository', async () => {
+  process.chdir(tempy.directory())
+
+  const resolution = { tarball: 'https://codeload.github.com/sveltejs/action-deploy-docs/tar.gz/a65fbf5a90f53c9d72fed4daaca59da50f074355' }
+
+  const result = await fetch.tarball(cafs, resolution, {
+    lockfileDir: process.cwd(),
+  })
+
+  expect(result.filesIndex).toBeTruthy()
+})