"guix environment --pure" different to guix-daemon's environment

[Danny Milosavljevic]

Hi,

so I'm trying to get mrustc to work (see attachment) but I've hit a snag.

When I use "guix build", gcc will eventually fail with SIGABRT.
When I then try to reproduce the problem via "guix environment" gcc works just
fine (using the failed tempdir and the failed command line).

What could be up in this case?

Can I get guix-daemon to make gcc dump core on SIGABRT? (setrlimit in a build 
phase? :->)

wip-mrustc.patch
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pgpH33wEoEzFO.pgp
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