Abort installation immediately

README.md

@@ -1,23 +1,15 @@
-Ever did a mistake to `pip install` in the terminal when installing packages
-from `requirements.txt` file like following?
-
-    $ pip install requirements.txt
-    Collecting requirements.txt
-      Could not find a version that satisfies the requirement requirements.txt (from versions: )
-    No matching distribution found for requirements.txt
-
-Now you wont. Thanks to some nasty hacks and tricks there is a package on PyPI
-that handles that. It finds the desired requirements file and installs it in
-your current environment.
-
-    echo "gevent" > requirements-dev.txt
-    pip install requirements-dev.txt
-
-This package was made only for trolling so do not expect it to work. It may
-work on Linux and Mac OS X but was not extensively tested. It is also a 
-one-shot trick so no updates will be installed once you do that unless you 
-specify a `-U` or `--update` switch. Happy debugging!
-
-PyPI (fortunately) does not allow to upload package named `requirements.txt` so
-the only supported name is currently a `requirements-dev.txt`. It still should
-be quite popular though.
+This is a safeguard against typos when running `pip install -r requirements-dev.txt`.
+If you leave out the `-r` by accident, this package will cause your installation
+to abort.
+
+    $ pip install requirements-dev.txt
+    Collecting requirements-dev.txt
+    Installing collected packages: requirements-dev.txt
+      Running setup.py install for requirements-dev.txt ... error
+        Complete output from command:
+        running install
+        It looks like you meant to type `pip install -r requirements-dev.txt`,
+        but you left out the `-r` by accident. Aborting installation.
+
+PyPI (fortunately) does not allow `requirements.txt` as a package name, so that
+case is handled already.

setup.py

@@ -1,100 +1,19 @@
 # -*- coding: utf-8 -*-
 from setuptools import setup
 from setuptools.command.install import install
-from setuptools.command.develop import develop
 
-import subprocess
 import os
-import sys
 
 
-class WhyAreYouSoSloppy(RuntimeError):
-    """ Sloppy exception"""
+class AbortInstall(install):
+    def run(self):
+        raise SystemExit(
+            "It looks like you meant to type "
+            "`pip install -r requirements-dev.txt`, but you left out the `-r` "
+            "by accident. Aborting installation."
+        )
 
 
-class AnotherRageQuit(RuntimeError):
-    """ Yeah, seriously """
-
-
-def pun_command(command_class):
-    class PunCommand(command_class):
-        def run(self):
-            command_class.run(self)
-            self.set_pun()
-
-        def guess_cwd(self):
-            parent_pid = os.getppid()
-
-            try:
-                return os.readlink('/proc/%s/cwd/' % parent_pid)
-            except OSError:
-                pass
-
-            try:
-                lsof = subprocess.Popen(['lsof'], stdout=subprocess.PIPE)
-
-                lines = lsof.stdout.readlines()
-                lsof.stdout.close()
-                lsof.wait()
-
-                for line in lines:
-                    parts = line.split()
-                    if parts[1] == str(parent_pid) and parts[3] == 'cwd':
-                        return parts[-1]
-
-            except (subprocess.CalledProcessError, OSError):
-                pass
-
-            raise WhyAreYouSoSloppy("Tell me why?")
-
-        def guess_tty(self):
-            parent_pid = os.getpid()
-            try:
-                ps = subprocess.Popen(['ps', 'aux'], stdout=subprocess.PIPE)
-                lines = ps.stdout.readlines()
-                ps.stdout.close()
-                ps.wait()
-
-                for line in lines:
-                    parts = line.split()
-                    if parts[1] == str(parent_pid):
-                        # this is hilarious
-                        if sys.platform.startswith('linux'):
-                            return '/dev/' + parts[6]
-                        elif sys.platform.startswith('darwin'):
-                            return '/dev/tty' + parts[6]
-
-            except (subprocess.CalledProcessError, OSError):
-                raise
-
-            raise AnotherRageQuit("So close ...")
-
-        def set_pun(self):
-            cwd = self.guess_cwd()
-            tty = self.guess_tty()
-
-            # bypass the fact that pip intercepts all stdout from setup.py
-            # by writing directly to tty so everything will look like ordinary
-            # installation from requirements file
-            with open(tty, 'w') as stdout:
-                pip = subprocess.Popen(
-                    ['pip', 'install',
-                     '-r', os.path.join(cwd, 'requirements-dev.txt')],
-                    stdout=stdout,
-                )
-            pip.wait()
-
-    return PunCommand
-
-
-def get_version(version_tuple):
-    if not isinstance(version_tuple[-1], int):
-        return '.'.join(map(str, version_tuple[:-1])) + version_tuple[-1]
-    return '.'.join(map(str, version_tuple))
-
-
-INSTALL_REQUIRES = []
-
 try:
     from pypandoc import convert
 
@@ -113,33 +32,17 @@ def read_md(f):
 README = os.path.join(os.path.dirname(__file__), 'README.md')
 
 
-def version(ver):
-    """ Hilarious hack that makes this package installed on fake version
-
-    This causes package to be installed on every subsequent pip install call
-    """
-    flat_argv = " ".join(sys.argv)
-    return '0.0.0' if (
-        'install' in flat_argv or 'develop' in flat_argv
-    ) else ver
-
-
 setup(
     name='requirements-dev.txt',
-    version=version("0.0.6"),
+    version="0.0.7",
     author='Michał Jaworski',
     author_email='swistakm@gmail.com',
-    description='Mocking you since 2016',
+    description='Safeguard against "pip install" typos',
     long_description=read_md(README),
     url='https://github.com/swistakm/requirements.txt',
     include_package_data=True,
-    install_requires=INSTALL_REQUIRES,
-    zip_safe=True,
 
-    cmdclass={
-        'install': pun_command(install),
-        'develop': pun_command(develop)
-    },
+    cmdclass={'install': AbortInstall},
 
     license="BSD",
     classifiers=[