I have only recently joined this list --- hopefully my first mail to this list is acceptable. *First*, is it possible to place comments in the distutils.cfg file? *Second*, I have been unable to install yappi (included in the PyPI list) on my Windows 7 (64-bit) platform with Python 2.7 (32-bit) and would greatly appreciate help on this installation. Note, I have installed many other PyPI packages on this same system with no problems where I have cygwin, minGW (32-bit) and minGW (64-bit) gcc and g++ compilers installed and working properly. I have installed yappi on my Windows Vista (32-bit) platform with Python 2.7. I have also studied the information posted by Greg Ward at http://docs.python.org/install/index.html. Here are some of the results of my attempts to install yappi on the Windows 7 system. I looked at what compilers are available for building from my setup.py file: c:\Software\Python\yappi\yappi-0.62>python setup.py build --help-compiler List of available compilers: --compiler=bcpp Borland C++ Compiler --compiler=cygwin Cygwin port of GNU C Compiler for Win32 --compiler=emx EMX port of GNU C Compiler for OS/2 --compiler=mingw32 Mingw32 port of GNU C Compiler for Win32 --compiler=msvc Microsoft Visual C++ --compiler=unix standard UNIX-style compiler I then tried the following: c:\Software\Python\yappi\yappi-0.62>python setup.py build --compiler=cygwin running build running build_py running build_ext building '_yappi' extension gcc -mcygwin -mdll -O -Wall -IC:\Python27\include -IC:\Python27\PC -c _yappi.c -o build\temp.win32-2.7\Release\_yappi.o error: command 'gcc' failed: No such file or directory I then tried to be more specific, c:\Software\Python\yappi\yappi-0.62>python setup.py build --compiler=c:\cygwin\bin\gcc.exe running build running build_py running build_ext building '_yappi' extension error: don't don't know how to compile C/C++ code on platform 'nt' with 'c:\cygwin\bin\gcc.exe' compiler I also tried many other possible (at least IMHO) solutions --- these also failed. For example, c:\Software\Python\yappi\yappi-0.62>python setup.py build --compiler=msvc running build running build_py running build_ext building '_yappi' extension error: Unable to find vcvarsall.bat I then modified the c:\python27\Lib\distutils\distutils.cfg file and set different compilers in it --- these also failed. The bottom line --- all my trials (attempts) failed for one reason or another. Any suggestions as to how to proceed? I will be glad to provide any additional information on my trials. --V