Nim 1.6.6 released

[didlybom]

Thank you @dom96. This is what I get:
    
    
    C:\Windows\system32>cmd /c echo int main^(^) { return sizeof^(void *^); } | 
gcc -xc - -o archtest && archtest
    
c:/users/User/.choosenim/toolchains/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
 cannot open output file archtest.exe: Permission denied
    collect2.exe: error: ld returned 1 exit status
    
    
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