install: Run preinstall prior to reading the tree

1 files changed, 15 insertions, 7 deletions

diff --git a/lib/install.js b/lib/install.js
index 20d3d0f96..cd64dc805 100644
--- a/lib/install.js
+++ b/lib/install.js
@@ -98,6 +98,7 @@ var path = require('path')
 // dependencies
 var log = require('npmlog')
 var readPackageTree = require('read-package-tree')
+var readPackageJson = require('read-package-json')
 var chain = require('slide').chain
 var asyncMap = require('slide').asyncMap
 var archy = require('archy')
@@ -245,6 +246,11 @@ Installer.prototype.run = function (_cb) {
 
   var installSteps = []
   var postInstallSteps = []
+  if (!this.dryrun) {
+    installSteps.push(
+      [this.newTracker(log, 'runTopLevelLifecycles', 2)],
+      [this, this.runPreinstallTopLevelLifecycles])
+   }
   installSteps.push(
     [this.newTracker(log, 'loadCurrentTree', 4)],
     [this, this.loadCurrentTree],
@@ -265,9 +271,6 @@ Installer.prototype.run = function (_cb) {
     [this, this.debugActions, 'decomposeActions', 'todo'])
   if (!this.dryrun) {
     installSteps.push(
-      [this.newTracker(log, 'runTopLevelLifecycles', 2)],
-      [this, this.runPreinstallTopLevelLifecycles],
-
       [this.newTracker(log, 'executeActions', 8)],
       [this, this.executeActions],
       [this, this.finishTracker, 'executeActions'])
@@ -551,10 +554,15 @@ Installer.prototype.runPreinstallTopLevelLifecycles = function (cb) {
   var steps = []
   var trackLifecycle = this.progress.runTopLevelLifecycles
 
-  steps.push(
-    [doOneAction, 'preinstall', this.idealTree.path, this.idealTree, trackLifecycle.newGroup('preinstall:.')]
-  )
-  chain(steps, cb)
+  readPackageJson(path.join(this.where, 'package.json'), log, false, (err, data) => {
+    if (err) return cb()
+    this.currentTree = createNode({
+      isTop: true,
+      package: data,
+      path: this.where
+    })
+    doOneAction('preinstall', this.where, this.currentTree, log.newGroup('preinstall:.'), cb)
+  })
 }
 
 Installer.prototype.runPostinstallTopLevelLifecycles = function (cb) {