title: Error while creating wheel while installing packages in Mac
body: <p>This is the error I receive while installing packages from a file using <code>pip install -r req.txt</code></p>
  <p>Then it tried building wheels for collected packages: <code>blis</code>; <code>cytoolz</code>; <code>murmurhash</code>; <code>preshed</code>; <code>regex</code>, and I got a long error list.</p>
  <pre><code>  typedef __uint32_t      __darwin_useconds_t;    /* [???] microseconds */
            ^
    note: '__uint128_t' declared here
    In file included from Python3/_regex.c:46:
    In file included from /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/include/python3.8/Python.h:25:
    In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/stdio.h:64:
    In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/_stdio.h:71:
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/_types.h:43:9: error: unknown type name '__uint32_t'; did you mean '__uint128_t'?
    typedef __uint32_t      __darwin_wctype_t;
            ^
    note: '__uint128_t' declared here
    In file included from Python3/_regex.c:46:
    In file included from /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/include/python3.8/Python.h:25:
    In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/stdio.h:64:
    In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/_stdio.h:75:
    In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/_types/_va_list.h:31:
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/machine/types.h:37:2: error: architecture not supported
    #error architecture not supported
     ^
    fatal error: too many errors emitted, stopping now [-ferror-limit=]
    20 errors generated.
    error: command 'xcrun' failed with exit status 1
    ----------------------------------------
    ERROR: Failed building wheel for regex```
  
  Is something wrong with MacOS side because it is giving me bizarre errors.
  Any leads appreciated.
  </code></pre>