Hi,

here is a patch set to add mold linker.

I've temporarily put the package definition into gnu/packages/raspberry-pi.scm as I'm unsure if it should go to gnu/packages/commencement.scm or somewhere else.

It would be be interesting to test it as a new default linker on such a large scale project.

Also there is currently one test failing so I've disabled the tests for now:

Testing mold-wrapper ... execl: No such file or directory
make[1]: *** [Makefile.linux:6: elf/mold-wrapper.sh] Error 1
make[1]: *** Waiting for unfinished jobs....

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Petr