Merge pull request #467 from kennethreitz/updates

notice on updates!

Pipfile

@@ -11,6 +11,9 @@ pew = ">=0.1.26"
 pep8 = "*"
 pytest = "*"
 pip-tools = "*"
+background = "*"
+semver = "*"
+requests = "*"
 
 [requires]
 python_version = "3.6"

Pipfile.lock

@@ -1,8 +1,9 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "76e3894ec377275576c53e478d0ecc005d0886027f0bb2962bc14faee96bb0e1"
+            "sha256": "f89bcf3e88bd0c33e5a924e59417f55eba7ff56069860f3faf1c57eaf269e979"
         },
+        "pipfile-spec": 1,
         "requires": {
             "python_version": "3.6"
         },
@@ -14,6 +15,9 @@
         ]
     },
     "default": {
+        "background": {
+            "version": "==0.1.0"
+        },
         "certifi": {
             "version": "==2017.7.27.1"
         },
@@ -53,6 +57,9 @@
         "resumable-urlretrieve": {
             "version": "==0.1.5"
         },
+        "semver": {
+            "version": "==2.7.8"
+        },
         "six": {
             "version": "==1.10.0"
         },

pipenv/cli.py

@@ -8,6 +8,7 @@ import distutils.spawn
 import shutil
 import signal
 
+import background
 import click
 import click_completion
 import crayons
@@ -16,6 +17,7 @@ import parse
 import pexpect
 import requests
 import pipfile
+import semver
 from blindspin import spinner
 from requests.packages.urllib3.exceptions import InsecureRequestWarning
 
@@ -60,6 +62,21 @@ requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
 
 project = Project()
 
+@background.task
+def check_for_updates():
+    try:
+        r = requests.get('https://pypi.python.org/pypi/pipenv/json', timeout=0.5)
+        latest = sorted([semver.parse_version_info(v) for v in list(r.json()['releases'].keys())])[-1]
+        current = semver.parse_version_info(__version__)
+
+        if latest > current:
+            click.echo('{0}: {1} is now available. You get bonus points for upgrading!'.format(
+                crayons.green('Courtesy Notice'),
+                crayons.yellow('Pipenv v{v.major}.{v.minor}.{v.patch}'.format(v=latest)),
+            ), err=True)
+    except Exception:
+        pass
+
 
 def cleanup_virtualenv(bare=True):
     """Removes the virtualenv directory from the system."""
@@ -790,6 +807,8 @@ def easter_egg(package_name):
 @click.pass_context
 def cli(ctx, where=False, venv=False, rm=False, bare=False, three=False, python=False, help=False):
 
+    check_for_updates()
+
     if ctx.invoked_subcommand is None:
         # --where was passed...
         if where:

setup.py

@@ -26,7 +26,8 @@ required = [
     'pew>=0.1.26',
     'pip',
     'pip-tools>=1.9.0',
-    'setuptools>=36.3.0'
+    'setuptools>=36.3.0',
+    'background'
 ]
 
 if sys.version_info < (2, 7):