Subject: System cross-compilation to i585-pc-gnu vs. grafts
From: Ludovic Courtès <[email-masked]>
To: [email-masked]
Date: Tue, 09 Jun 2020 14:01:12 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Hello!

Attempting to cross-build the system to i586-pc-gnu with grafts enabled
leads to something fishy:

--8<---------------cut here---------------start------------->8---
$ git log |head -1
commit a50628bbe0fa4ba3835e311098e4fdf7a1d8a29e
$ ./pre-inst-env guix system build --target=i586-pc-gnu gnu/system/examples/bare-hurd.tmpl -n
The following derivations would be built:
   /gnu/store/3dphrw8kka8x3pj1xshc7wxv18spcp9s-tzdata-2019c.drv
   /gnu/store/ry0pzyhawjkjmz343dda3in2fbbaax5b-net-tools-1.60-0.479bb4a.drv
   /gnu/store/jwwsf3kky7qwbi0kswbqa76dk069hj4a-linux-libre-headers-cross-x86_64-linux-5.4.20.drv
   /gnu/store/sa56z96rixkghpf3z1rv0sqc41rfix4d-gcc-cross-sans-libc-x86_64-linux-7.5.0.drv
   /gnu/store/kcrrjh29qawb2yhsq41hvggbymnmy67h-glibc-cross-x86_64-linux-2.31.drv
   /gnu/store/lj7acjnbza54j1kv0n8imdclh70087s3-gcc-cross-x86_64-linux-7.5.0.drv
47.9 MB would be downloaded:
   /gnu/store/1gyikmvlmdvblg5q6j2aj1dp5dln6d0v-guix-1.1.0-9.ab9e300
   /gnu/store/70qjgxkdvjsqb3q14yyam9wk8sd48azc-openldap-2.4.49
   /gnu/store/w1rm6r3dmhsvqpb5biwy0hck7swij9z1-curl-7.69.1
   /gnu/store/bbm5x79iqrwy0mcx6yr4hq3x5n641jya-git-minimal-2.26.2
$ guix graph --path -t derivation /gnu/store/ry0pzyhawjkjmz343dda3in2fbbaax5b-net-tools-1.60-0.479bb4a.drv /gnu/store/sa56z96rixkghpf3z1rv0sqc41rfix4d-gcc-cross-sans-libc-x86_64-linux-7.5.0.drv
/gnu/store/ry0pzyhawjkjmz343dda3in2fbbaax5b-net-tools-1.60-0.479bb4a.drv
/gnu/store/jwwsf3kky7qwbi0kswbqa76dk069hj4a-linux-libre-headers-cross-x86_64-linux-5.4.20.drv
/gnu/store/sa56z96rixkghpf3z1rv0sqc41rfix4d-gcc-cross-sans-libc-x86_64-linux-7.5.0.drv
--8<---------------cut here---------------end--------------->8---

The “x86_64-linux” cross-toolchain look very bogus.  It disappears when
adding ‘--no-grafts’.

Ludo’.