fix(packageRelativePath): fix 'where' for file deps

Fix 'where' for file deps. It makes more sense for the 'where' to be the
directory the file is in (and was possibly built in) than it being the
file itself, having no use whatsoever.

See https://npm.community/t/3364

PR-URL: #142
Credit: @larsgw
Close: #142
Reviewed-by: @mikemimik

lib/install/deps.js

@@ -203,10 +203,15 @@ function removeObsoleteDep (child, log) {
 function packageRelativePath (tree) {
   if (!tree) return ''
   var requested = tree.package._requested || {}
-  var isLocal = requested.type === 'directory' || requested.type === 'file'
-  return isLocal ? requested.fetchSpec
-    : (tree.isLink || tree.isInLink) && !preserveSymlinks() ? tree.realpath
-      : tree.path
+  if (requested.type === 'directory') {
+    return requested.fetchSpec
+  } else if (requested.type === 'file') {
+    return path.dirname(requested.fetchSpec)
+  } else if ((tree.isLink || tree.isInLink) && !preserveSymlinks()) {
+    return tree.realpath
+  } else {
+    return tree.path
+  }
 }
 
 function matchingDep (tree, name) {

test/tap/install-dep-classification.js

@@ -23,18 +23,39 @@ const env = common.newEnv().extend({
   npm_config_loglevel: 'error'
 })
 
+/**
+ * NOTE: Tarball Fixtures
+ * They contain package.json files with dependencies like the following:
+ * a-1.0.0.tgz: package/package.json
+ * {
+ *   "name":"a",
+ *   "version":"1.0.0",
+ *   "dependencies":{
+ *     "b":"./b-1.0.0.tgz"
+ *   }
+ * }
+ * example-1.0.0.tgz: package/package.json
+ * {
+ *   "name":"example",
+ *   "version":"1.0.0",
+ *   "dependencies":{
+ *     "a":"./a-1.0.0.tgz",
+ *     "b":"./b-1.0.0.tgz"
+ *   }
+ * }
+ */
 const fixture = new Tacks(Dir({
   cache: Dir(),
   global: Dir(),
   tmp: Dir(),
   testdir: Dir({
     'a-1.0.0.tgz': File(Buffer.from(
-      '1f8b0800000000000003edcfc10e82300c0660ce3ec5d2b38e4eb71d789b' +
-      '010d41e358187890f0ee56493c71319218937d977feb9aa50daebab886f2' +
-      'b0a43cc7ce671b4344abb558ab3f2934223b198b4a598bdcc707a38f9c5b' +
-      '0fb2668c83eb79946fff597611effc131378772528c0c11e6ed4c7b6f37c' +
-      '53122572a5a640be265fb514a198a0e43729f3f2f06a9043738779defd7a' +
-      '89244992e4630fd69e456800080000',
+      '1f8b0800000000000003edcfc10a83300c06e09df71492f35653567bf06d' +
+      'a2067163b558b7c3c4775f54f0e4654c18837e973f4da0249eca1bd59cfa' +
+      '25d535b4eeb03344b4c6245bfd8946995d328b5a5b3bd55264464beebdc8' +
+      '9647e8a99355befd67b92559f34f0ce0e8ce9003c1099edc85a675f2d20a' +
+      '154aa762cfae6257361c201fa090994a8bf33c577dfd82713cfefa86288a' +
+      'a2e8736f68a0ff4400080000',
       'hex'
     )),
     'b-1.0.0.tgz': File(Buffer.from(
@@ -55,12 +76,12 @@ const fixture = new Tacks(Dir({
       })
     }),
     'example-1.0.0.tgz': File(Buffer.from(
-      '1f8b0800000000000003ed8fc10ac2300c8677f62946cedaa5d8f5e0db64' +
-      '5b1853d795758a38f6ee4607e261370722f4bbfce5cb4f493c9527aa39f3' +
-      '73aa63e85cb23288688d4997fc136d304df6b945adad45e9c923375a72ed' +
-      '4596b884817a59e5db7fe65bd277fe0923386a190ec0376afd99610b57ee' +
-      '43d339715aa14231157b7615bbb2e100871148664a65b47b15d450dfa554' +
-      'ccb2f890d3b4f9f57d9148241259e60112d8208a00080000',
+      '1f8b0800000000000003ed8fc10a83300c863def2924e7ada6587bf06daa' +
+      '06719bb55837c6c4775fa6307670a70963d0ef92f02584fcce94275353e2' +
+      '962a8ebeb3d1c620a2562a5ef34f64aae328cd344aa935f21e379962875b' +
+      '3fb2c6c50fa6e757bebdb364895ff54f18c19a962007ba99d69d09f670a5' +
+      'de379d6527050a645391235b912d1bf2908f607826127398e762a8efbc53' +
+      'ccae7873d3b4fb75ba402010087ce2014747c9d500080000',
       'hex'
     )),
     optional: Dir({

test/tap/install-local-from-local.js

@@ -0,0 +1,94 @@
+'use strict'
+var path = require('path')
+var fs = require('graceful-fs')
+var test = require('tap').test
+var common = require('../common-tap.js')
+var Tacks = require('tacks')
+var Dir = Tacks.Dir
+var File = Tacks.File
+
+var testdir = path.join(__dirname, path.basename(__filename, '.js'))
+var cwd = path.join(testdir, '3')
+
+/**
+ * NOTE: Tarball Fixtures
+ * They contain package.json files with dependencies like the following:
+ * 1-1.0.0.tgz: package/package.json
+ * {
+ *   "name":"1",
+ *   "version":"1.0.0"
+ * }
+ * 2-1.0.0.tgz: package/package.json
+ * {
+ *   "name":"2",
+ *   "version":"1.0.0",
+ *   "dependencies":{
+ *     "1":"file:../1/1-1.0.0.tgz"
+ *   }
+ * }
+ */
+var fixture = new Tacks(Dir({
+  '1': Dir({
+    '1-1.0.0.tgz': File(Buffer.from(
+      '1f8b08000000000000032b484cce4e4c4fd52f80d07a59c5f9790c540606' +
+      '06066626260ad8c4c1c0d85c81c1d8d4ccc0d0d0cccc00a80ec830353103' +
+      'd2d4760836505a5c925804740aa5e640bca200a78708a856ca4bcc4d55b2' +
+      '523254d2512a4b2d2acecccf03f1f40cf40c946ab906da79a360148c8251' +
+      '300a6804007849dfdf00080000',
+      'hex'
+    ))
+  }),
+  '2': Dir({
+    '2-1.0.0.tgz': File(Buffer.from(
+      '1f8b0800000000000003ed8f3d0e83300c8599394594b90d36840cdc2602' +
+      '17d19f80087468c5ddeb14a9135b91aa4af996e73c3f47f660eb8b6d291b' +
+      '565567dfbb646700c0682db6fc00ea5c24456900d118e01c17a52e58f75e' +
+      '648bd94f76e455befd67bd457cf44f78a64248676f242b21737908cf3b8d' +
+      'beeb5d70508182d56d6820d790ab3bf2dc0a83ec62489dba2b554a6598e1' +
+      'f13da1a6f62139b0a44bfaeb0b23914824b2c50b8b5b623100080000',
+      'hex'
+    ))
+  }),
+  '3': Dir({
+    'package.json': File({
+      name: '3',
+      version: '1.0.0',
+      dependencies: {
+        '2': '../2/2-1.0.0.tgz'
+      }
+    })
+  })
+}))
+
+function setup () {
+  fixture.create(testdir)
+}
+
+function cleanup () {
+  fixture.remove(testdir)
+}
+
+test('setup', function (t) {
+  cleanup()
+  setup()
+  t.end()
+})
+
+test('installing local package with local dependency', function (t) {
+  common.npm(
+    ['install'],
+    {cwd: cwd},
+    function (er, code, stdout, stderr) {
+      t.is(code, 0, 'no error code')
+      t.is(stderr, '', 'no error output')
+      t.ok(fs.existsSync(path.join(cwd, 'node_modules', '2')), 'installed direct dep')
+      t.ok(fs.existsSync(path.join(cwd, 'node_modules', '1')), 'installed indirect dep')
+      t.end()
+    }
+  )
+})
+
+test('cleanup', function (t) {
+  cleanup()
+  t.end()
+})