Fix dependencies of package

Author: Insoleet

setup.py

@@ -1,6 +1,43 @@
 from setuptools import setup, find_packages
 import ucoinpy
+import os
+import re
 
+def which(program):
+    """
+    Detect whether or not a program is installed.
+    Thanks to http://stackoverflow.com/a/377028/70191
+    """
+    def is_exe(fpath):
+        return os.path.exists(fpath) and os.access(fpath, os.X_OK)
+
+    fpath, _ = os.path.split(program)
+    if fpath:
+        if is_exe(program):
+            return program
+    else:
+        for path in os.environ['PATH'].split(os.pathsep):
+            exe_file = os.path.join(path, program)
+            if is_exe(exe_file):
+                return exe_file
+
+    return None
+
+EDITABLE_REQUIREMENT = re.compile(r'^-e (?P<link>(?P<vcs>git|svn|hg|bzr).+#egg=(?P<package>.+)-(?P<version>\d(?:\.\d)*))$')
+
+install_requires = []
+dependency_links = []
+
+for requirement in (l.strip() for l in open('requirements.txt')):
+    match = EDITABLE_REQUIREMENT.match(requirement)
+    if match:
+        assert which(match.group('vcs')) is not None, \
+            "VCS '%(vcs)s' must be installed in order to install %(link)s" % match.groupdict()
+        install_requires.append("%(package)s==%(version)s" % match.groupdict())
+        dependency_links.append(match.group('link'))
+    else:
+        install_requires.append(requirement)
+        
 setup(
     name='ucoinpy',
 
@@ -15,7 +52,7 @@
     description="A python implementation of [uCoin](https://github.com/ucoin-io/ucoin) API",
 
     long_description=open('README.md').read(),
-    
+
     # Active la prise en compte du fichier MANIFEST.in
     include_package_data=True,
     url='https://github.com/ucoin-io/ucoin-python-api',
@@ -30,6 +67,8 @@
         "Programming Language :: Python :: 3.4",
         "Topic :: Communications",
     ],
+    install_requires=install_requires,
+    dependency_links=dependency_links
 
 
 )