bug#73799: guix shell: error: symlink: File exists: "/bin/cc"

[Rutherther]

Hey Marco,

that llvm.scm change is actually irrelevant to the problem. There
will never be cc in the llvm package itself before the condition.
It occurs prior to the profile merging.
There is no fhs in that case
so checking for /bin/cc does not make sense, moreover
it could pose a problem if one built without a sandbox
on a foreign distro. Then the package output could differ
because /bin/gcc or /bin/c++ exist.

As for the change in environment.scm, that is indeed
what causes the issue.
Since there is an if already, maybe it would make sense to
not introduce another condition statement, but to extend
the existing if?

Regards,
Rutherther