Use pure node.js to generate package.json.

Makefile

@@ -203,7 +203,7 @@ d3.js d3%.js: Makefile
 	@chmod a-w $@
 
 package.json: d3.js
-	sed -e s/{version}/`node -e 'require("./test/env"); require("./d3"); d3.version'`/ $@.template > $@
+	node src/package.js > $@
 
 clean:
 	rm -f d3*.js

package.json

@@ -2,10 +2,23 @@
   "name": "d3",
   "version": "1.29.6",
   "description": "A small, free JavaScript library for manipulating documents based on data.",
-  "keywords": ["dom", "w3c", "visualization", "svg", "animation", "canvas"],
+  "keywords": [
+    "dom",
+    "w3c",
+    "visualization",
+    "svg",
+    "animation",
+    "canvas"
+  ],
   "homepage": "http://mbostock.github.com/d3/",
-  "author": {"name": "Mike Bostock", "url": "http://bost.ocks.org/mike"},
-  "repository": {"type": "git", "url": "http://github.com/mbostock/d3.git"},
+  "author": {
+    "name": "Mike Bostock",
+    "url": "http://bost.ocks.org/mike"
+  },
+  "repository": {
+    "type": "git",
+    "url": "http://github.com/mbostock/d3.git"
+  },
   "dependencies": {
     "uglify-js": "1.0.6",
     "jsdom": "0.2.3",

package.json.template → src/package.js

-{
+require("../test/env");
+require("../d3");
+
+require("util").puts(JSON.stringify({
   "name": "d3",
-  "version": "{version}",
+  "version": d3.version,
   "description": "A small, free JavaScript library for manipulating documents based on data.",
   "keywords": ["dom", "w3c", "visualization", "svg", "animation", "canvas"],
   "homepage": "http://mbostock.github.com/d3/",
@@ -11,4 +14,4 @@
     "jsdom": "0.2.3",
     "vows": "0.5.10"
   }
-}
+}, null, 2));