Populate atom.nuspec with the current Atom version

build/tasks/create-installer.coffee

@@ -13,8 +13,14 @@ module.exports = (grunt) ->
     buildDir = grunt.config.get('atom.buildDir')
     atomDir = path.join(buildDir, 'Atom')
 
+    packageInfo = JSON.parse(fs.readFileSync(path.join(atomDir, 'resources', 'app', 'package.json'), {encoding: 'utf8'}))
+    inputTemplate = fs.readFileSync(path.join('build', 'windows', 'atom.nuspec.hbs'), {encoding: 'utf8'})
+
+    targetNuspecPath = path.join(buildDir, 'atom.nuspec')
+    fs.writeFileSync(targetNuspecPath, inputTemplate.replace(/{{version}}/, packageInfo.version))
+
     cmd = 'build/windows/nuget.exe'
-    args = ['pack', './build/windows/atom.nuspec', '-BasePath', atomDir, '-OutputDirectory', buildDir]
+    args = ['pack', targetNuspecPath, '-BasePath', atomDir, '-OutputDirectory', buildDir]
 
     spawn {cmd, args}, (error, result, code) ->
       if error?

build/windows/atom.nuspec.hbs

@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
     <metadata>
         <id>atom</id>
-        <version>0.123.0</version>
+        <version>{{version}}</version>
         <authors>The Atom Community</authors>
         <owners>The Atom Community</owners>
         <iconUrl>http://f.cl.ly/items/0X3B1j1j010I0X1p3l0S/atom.ico</iconUrl>