bug#56030: The guix pull profile is too big

[(]

On Thu Jul 21, 2022 at 4:03 PM BST, paren--- via Bug reports for GNU Guix wrote:
> Would this not violate POSIX?
Correction: system(3) is ISO C, not POSIX.

But:

@ C11 7.1.4p1
```
... it is permitted to take the address of a library function even if it
is also defined as a macro ^185 ...

185) This means that an implementation shall provide an actual function
for each library function, even if it also provides a macro for that
function.
```

Note the footnote. So this technically would be a violation of ISO C,
but trivially fixed. Apologies for the noise! (Though the SHELL_PATH
solution still applies, of course.)

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