Running pivy-importer fails on Mac

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I attempted to run pivy-importer on my MacBook Pro 2015, Siera v. 10.12.3, Java 1.8.0_112 and ended up with this error

```
MUSRS186002-942:tmp rs186002$ java -jar pivy-importer-0.4.1-all.jar --repo ~/tmp/pypi virtualenv:15.0.1 pip:7.1.2 --replace alabaster:0.7=alabaster:0.7.1,pytz:0a=pytz:2016.4,Babel:0.8=Babel:1.0,sphinx_rtd_theme:0.1=sphinx_rtd_theme:0.1.1
alabaster:0.7=alabaster:0.7.1
pytz:0a=pytz:2016.4
Babel:0.8=Babel:1.0
sphinx_rtd_theme:0.1=sphinx_rtd_theme:0.1.1
12:53:02.579 INFO c.l.p.i.deps.DependencyDownloader - Pulling in virtualenv:15.0.1
12:53:04.256 INFO c.l.p.i.deps.DependencyDownloader - Pulling in pip:7.1.2
12:53:04.777 INFO c.l.p.i.deps.DependencyDownloader - Pulling in pytest:3.0.6
12:53:05.196 INFO c.l.p.i.deps.DependencyDownloader - Pulling in virtualenv:1.10
12:53:05.872 INFO c.l.p.i.deps.DependencyDownloader - Pulling in scripttest:1.3
12:53:05.936 INFO c.l.p.i.deps.DependencyDownloader - Pulling in mock:2.0.0
12:53:06.671 INFO c.l.p.i.deps.DependencyDownloader - Pulling in py:1.4.29
12:53:06.825 INFO c.l.p.i.deps.DependencyDownloader - Pulling in setuptools:34.1.1
12:53:06.940 INFO c.l.p.i.deps.DependencyDownloader - Pulling in argparse:1.4.0
12:53:07.010 INFO c.l.p.i.deps.DependencyDownloader - Pulling in colorama:0.3.7
12:53:07.076 INFO c.l.p.i.deps.DependencyDownloader - Pulling in pbr:0.11.0
12:53:07.161 INFO c.l.p.i.deps.DependencyDownloader - Pulling in six:1.9.0
12:53:07.228 INFO c.l.p.i.deps.DependencyDownloader - Pulling in funcsigs:1.0.0
12:53:07.354 INFO c.l.p.i.deps.DependencyDownloader - Pulling in Sphinx:1.5.2
12:53:09.066 INFO c.l.p.i.deps.DependencyDownloader - Pulling in Jinja2:2.7
12:53:09.386 INFO c.l.p.i.deps.DependencyDownloader - Pulling in Pygments:2.0
12:53:10.152 INFO c.l.p.i.deps.DependencyDownloader - Pulling in Sphinx:1.3
12:53:11.369 INFO c.l.p.i.deps.DependencyDownloader - Pulling in unittest2:1.1.0
12:53:11.506 INFO c.l.p.i.deps.DependencyDownloader - Pulling in pip:9.0.1
12:53:11.748 INFO c.l.p.i.deps.DependencyDownloader - Pulling in ordereddict:1.1
12:53:11.811 INFO c.l.p.i.deps.DependencyDownloader - Pulling in six:1.5.0
12:53:11.883 INFO c.l.p.i.deps.DependencyDownloader - Pulling in Jinja2:2.3
12:53:12.307 INFO c.l.p.i.deps.DependencyDownloader - Pulling in docutils:0.11
12:53:12.514 INFO c.l.p.i.deps.DependencyDownloader - Pulling in snowballstemmer:1.1.0
12:53:12.637 INFO c.l.p.i.deps.DependencyDownloader - Pulling in Babel:1.3
12:53:13.104 INFO c.l.p.i.deps.DependencyDownloader - Pulling in alabaster:0.7.1
12:53:13.169 INFO c.l.p.i.deps.DependencyDownloader - Pulling in imagesize:0.7.1
12:53:13.232 INFO c.l.p.i.deps.DependencyDownloader - Pulling in requests:2.4.0
12:53:13.403 INFO c.l.p.i.deps.DependencyDownloader - Pulling in colorama:0.3.5
12:53:13.473 INFO c.l.p.i.deps.DependencyDownloader - Pulling in nose:1.3.7
12:53:13.568 INFO c.l.p.i.deps.DependencyDownloader - Pulling in simplejson:3.10.0
12:53:13.638 INFO c.l.p.i.deps.DependencyDownloader - Pulling in html5lib:1.0b10
Exception in thread "main" java.lang.RuntimeException: Unable to find version 2.2 for chardet
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:80)
at org.codehaus.groovy.reflection.CachedConstructor.doConstructorInvoke(CachedConstructor.java:74)
at org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrap.callConstructor(ConstructorSite.java:84)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallConstructor(CallSiteArray.java:60)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:235)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:247)
at com.linkedin.python.importer.pypi.ProjectDetails.maybeFixVersion(ProjectDetails.groovy:55)
at com.linkedin.python.importer.pypi.ProjectDetails$maybeFixVersion.call(Unknown Source)
at com.linkedin.python.importer.distribution.SourceDistPackage$_parseRequiresText_closure1.doCall(SourceDistPackage.groovy:81)
at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019)
at groovy.lang.Closure.call(Closure.java:426)
at groovy.lang.Closure.call(Closure.java:442)
at org.codehaus.groovy.runtime.DefaultGroovyMethods.callClosureForLine(DefaultGroovyMethods.java:5236)
at org.codehaus.groovy.runtime.StringGroovyMethods.eachLine(StringGroovyMethods.java:615)
at org.codehaus.groovy.runtime.StringGroovyMethods.eachLine(StringGroovyMethods.java:636)
at org.codehaus.groovy.runtime.StringGroovyMethods.eachLine(StringGroovyMethods.java:595)
at org.codehaus.groovy.runtime.dgm$1060.invoke(Unknown Source)
at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoMetaMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:274)
at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:56)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
at com.linkedin.python.importer.distribution.SourceDistPackage.parseRequiresText(SourceDistPackage.groovy:50)
at com.linkedin.python.importer.distribution.SourceDistPackage.getDependencies(SourceDistPackage.groovy:41)
at sun.reflect.GeneratedMethodAccessor26.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.callGroovyObjectGetProperty(GetEffectivePogoPropertySite.java:68)
at com.linkedin.python.importer.deps.DependencyDownloader.downloadDependency(DependencyDownloader.groovy:72)
at com.linkedin.python.importer.deps.DependencyDownloader$downloadDependency.callCurrent(Unknown Source)
at com.linkedin.python.importer.deps.DependencyDownloader.download(DependencyDownloader.groovy:50)
at com.linkedin.python.importer.ImporterCLI.main(ImporterCLI.java:73)
```

Reproduce the shown pivy-importer command and trace the failure from com.linkedin.python.importer.pypi.ProjectDetails.groovy:55 through SourceDistPackage.groovy:81 and DependencyDownloader.groovy:72. Confirm how the chardet 2.2 requirement is handled; done means the importer no longer fails at this point or reports the dependency problem clearly.

Written by the indexing model from the issue text.