install: Use EXDEV aware move instead of rename

This will allow moving across devices and moving when filesystems don't
support renaming directories full of files.

Credit: @iarna

lib/install/action/extract.js

@@ -3,7 +3,7 @@ var path = require('path')
 var iferr = require('iferr')
 var asyncMap = require('slide').asyncMap
 var fs = require('graceful-fs')
-var rename = require('../../utils/rename.js')
+var move = require('../../utils/move.js')
 var gentlyRm = require('../../utils/gently-rm.js')
 var updatePackageJson = require('../update-package-json')
 var npm = require('../../npm.js')
@@ -68,7 +68,7 @@ function stageBundledModule (bundler, child, staging, parentPath, next) {
 
   function moveModule () {
     if (child.fromBundle) {
-      return rename(stageFrom, stageTo, iferr(next, updateMovedPackageJson))
+      return move(stageFrom, stageTo, iferr(next, updateMovedPackageJson))
     } else {
       return fs.stat(stageFrom, function (notExists, exists) {
         if (exists) {

lib/install/action/finalize.js

@@ -4,7 +4,7 @@ var rimraf = require('rimraf')
 var fs = require('graceful-fs')
 var mkdirp = require('mkdirp')
 var asyncMap = require('slide').asyncMap
-var rename = require('../../utils/rename.js')
+var move = require('../../utils/move.js')
 var gentlyRm = require('../../utils/gently-rm')
 var moduleStagingPath = require('../module-staging-path.js')
 
@@ -26,31 +26,31 @@ module.exports = function (staging, pkg, log, next) {
 
   function destStatted (doesNotExist) {
     if (doesNotExist) {
-      rename(extractedTo, pkg.path, whenMoved)
+      move(extractedTo, pkg.path, whenMoved)
     } else {
       moveAway()
     }
   }
 
-  function whenMoved (renameEr) {
-    if (!renameEr) return next()
-    if (renameEr.code !== 'ENOTEMPTY') return next(renameEr)
+  function whenMoved (moveEr) {
+    if (!moveEr) return next()
+    if (moveEr.code !== 'ENOTEMPTY' && moveEr.code !== 'EEXIST') return next(moveEr)
     moveAway()
   }
 
   function moveAway () {
-    rename(pkg.path, delpath, whenOldMovedAway)
+    move(pkg.path, delpath, whenOldMovedAway)
   }
 
-  function whenOldMovedAway (renameEr) {
-    if (renameEr) return next(renameEr)
-    rename(extractedTo, pkg.path, whenConflictMoved)
+  function whenOldMovedAway (moveEr) {
+    if (moveEr) return next(moveEr)
+    move(extractedTo, pkg.path, whenConflictMoved)
   }
 
-  function whenConflictMoved (renameEr) {
+  function whenConflictMoved (moveEr) {
     // if we got an error we'll try to put back the original module back,
     // succeed or fail though we want the original error that caused this
-    if (renameEr) return rename(delpath, pkg.path, function () { next(renameEr) })
+    if (moveEr) return move(delpath, pkg.path, function () { next(moveEr) })
     fs.readdir(path.join(delpath, 'node_modules'), makeTarget)
   }
 
@@ -65,7 +65,7 @@ module.exports = function (staging, pkg, log, next) {
     asyncMap(files, function (file, done) {
       var from = path.join(delpath, 'node_modules', file)
       var to = path.join(pkg.path, 'node_modules', file)
-      rename(from, to, done)
+      move(from, to, done)
     }, cleanup)
   }
 

lib/install/action/move.js

@@ -8,7 +8,7 @@ var mkdirp = require('mkdirp')
 var rmStuff = require('../../unbuild.js').rmStuff
 var lifecycle = require('../../utils/lifecycle.js')
 var updatePackageJson = require('../update-package-json.js')
-var rename = require('../../utils/rename.js')
+var move = require('../../utils/move.js')
 
 /*
   Move a module from one point in the node_modules tree to another.
@@ -46,7 +46,7 @@ function moveModuleOnly (from, to, log, done) {
 
   log.silly('move', 'move existing destination node_modules away', toModules)
 
-  rename(toModules, tempToModules, removeDestination(done))
+  move(toModules, tempToModules, removeDestination(done))
 
   function removeDestination (next) {
     return function (er) {
@@ -62,7 +62,7 @@ function moveModuleOnly (from, to, log, done) {
   function moveToModulesBack (next) {
     return function () {
       log.silly('move', 'move existing destination node_modules back', toModules)
-      rename(tempToModules, toModules, iferr(done, next))
+      move(tempToModules, toModules, iferr(done, next))
     }
   }
 
@@ -76,22 +76,22 @@ function moveModuleOnly (from, to, log, done) {
   function moveNodeModules (next) {
     return function () {
       log.silly('move', 'move source node_modules away', fromModules)
-      rename(fromModules, tempFromModules, iferr(doMove(next), doMove(moveNodeModulesBack(next))))
+      move(fromModules, tempFromModules, iferr(doMove(next), doMove(moveNodeModulesBack(next))))
     }
   }
 
   function doMove (next) {
     return function () {
       log.silly('move', 'move module dir to final dest', from, to)
-      rename(from, to, iferr(done, next))
+      move(from, to, iferr(done, next))
     }
   }
 
   function moveNodeModulesBack (next) {
     return function () {
       mkdirp(from, iferr(done, function () {
         log.silly('move', 'put source node_modules back', fromModules)
-        rename(tempFromModules, fromModules, iferr(done, next))
+        move(tempFromModules, fromModules, iferr(done, next))
       }))
     }
   }

lib/install/action/remove.js

@@ -6,7 +6,7 @@ var asyncMap = require('slide').asyncMap
 var mkdirp = require('mkdirp')
 var npm = require('../../npm.js')
 var andIgnoreErrors = require('../and-ignore-errors.js')
-var rename = require('../../utils/rename.js')
+var move = require('../../utils/move.js')
 
 // This is weird because we want to remove the module but not it's node_modules folder
 // allowing for this allows us to not worry about the order of operations
@@ -26,11 +26,11 @@ function removeLink (pkg, next) {
 function removeDir (pkg, log, next) {
   var modpath = path.join(path.dirname(pkg.path), '.' + path.basename(pkg.path) + '.MODULES')
 
-  rename(path.join(pkg.path, 'node_modules'), modpath, unbuildPackage)
+  move(path.join(pkg.path, 'node_modules'), modpath, unbuildPackage)
 
-  function unbuildPackage (renameEr) {
+  function unbuildPackage (moveEr) {
     npm.commands.unbuild(pkg.path, true, function () {
-      rimraf(pkg.path, renameEr ? andRemoveEmptyParents(pkg.path) : moveModulesBack)
+      rimraf(pkg.path, moveEr ? andRemoveEmptyParents(pkg.path) : moveModulesBack)
     })
   }
 
@@ -58,7 +58,7 @@ function removeDir (pkg, log, next) {
       var to = path.join(pkg.path, 'node_modules', file)
       // we ignore errors here, because they can legitimately happen, for instance,
       // bundled modules will be in both node_modules folders
-      rename(from, to, andIgnoreErrors(done))
+      move(from, to, andIgnoreErrors(done))
     }, cleanup)
   }