gistfile.patch

diff --git a/lib/arborist/build-ideal-tree.js b/lib/arborist/build-ideal-tree.js
index 9464772..5a4f8d7 100644
--- a/lib/arborist/build-ideal-tree.js
+++ b/lib/arborist/build-ideal-tree.js
@@ -208,7 +208,8 @@ module.exports = cls => class IdealTreeBuilder extends Tracker(Virtual(Actual(cl
   }
 
   [_rootNodeFromPackage] (pkg) {
-    return new Node({
+    const Cls = pkg.workspaces ? Workspace : Node
+    return this[_mapWorkspaces](new Cls({
       path: this.path,
       pkg,
       extraneous: false,
@@ -217,7 +218,15 @@ module.exports = cls => class IdealTreeBuilder extends Tracker(Virtual(Actual(cl
       peer: false,
       optional: false,
       global: this[_global],
-    })
+    }))
+  }
+
+  [_mapWorkspaces] (node) {
+    if (!node.isWorkspace)
+      return node
+
+    return doGlobStuffReturnPromise(.....)
+      .then(() => node)
   }
 
   // process the add/rm requests by modifying the root node, and the
diff --git a/notes/workspace.md b/notes/workspace.md
index 289705a..b0d0711 100644
--- a/notes/workspace.md
+++ b/notes/workspace.md
@@ -35,15 +35,30 @@ what pre-arborist `npm link ../foo` would generate.
 
 ```
 root
++-- node_modules
+|   +-- app => app
+|   +-- a => pkgs/a
+|   +-- b => pkgs/b
+|   +-- c => pkgs/c
+|   +-- x
+|   +-- y
+|   +-- z
+|   +-- i
+|   +-- n ?
++-- app
+|   +-- node_modules
+|       +-- a => pkgs/a
+|       +-- b => pkgs/b
+|       +-- c => pkgs/c
+|       +-- i
 +-- pkgs
-    +-- app
-    |   +-- node_modules
-    |       +-- a => pkgs/a
-    |       +-- b => pkgs/b
-    |       +-- c => pkgs/c
-    |       +-- i
-    +-- a (b, c, x)
+    +-- a (b, c, x, m@file:./m)
+    |   +-- m (n)
+    |   |   +-- node_modules
+    |   |       +-- n ?
     |   +-- node_modules
+    |       +-- n ?
+    |       +-- m => pkgs/a/m
     |       +-- x
     |       +-- b => pkgs/b
     |       +-- c => pkgs/c
@@ -53,8 +68,42 @@ root
     |       +-- a => pkgs/a
     |       +-- c => pkgs/c
     +-- c (a, b, z)
-        +-- node_modules
-            +-- z
-            +-- a => pkgs/a
-            +-- b => pkgs/b
+    |   +-- node_modules
+    |       +-- z
+    |       +-- a => pkgs/a
+    |       +-- b => pkgs/b
+    +-- w (nested workspace) wsParent = root
+        +-- pkgs
+            +-- i (wsParent = pkgs/w, root = ./, parent = null, fsParent = pkgs/w)
+            +-- j
+            +-- k
 ```
+
+root/package.json
+
+```json
+{
+  "workspaces": [
+    "pkgs/*",
+    "app"
+  ]
+}
+```
+
+root `Node`
+
+- know it's a workspace
+- 4 Edges in edgesOut with type=workspace, referencing workspace children
+  - that means we create a link node in root.children.get('app')
+    targetting `./app` Node, etc.
+- during buildIdeal:
+  - need to know that app is in root's workspace
+    - app.wsParent = root
+    - root.wsChildren.add(app)
+  - if any dep CAN be satisfied by a named dep in the workspace, then
+    create a Link targetting that workspace child node
+      - resolving: _first_ check this.wsParent.get('dep-name'), and if
+        that's ok, then resolve with a link to that target.
+  - no hoisting by default: when doing `_canPlaceDep`, if target is
+    node.wsParent, AND we're not hoisting, THEN: return CONFLICT
+- When setting Node.parent or Node.fsParent, set wsParent = parent.wsParent