On Sun, Jan 21, 2018 at 04:58:22AM +0000, Ken Moffat wrote:
> I'll be putting rustc-1.23.0 into the book soon
Or maybe I won't. I've had weird rust panics when building as a
user (unrepeatable), and building as root (only advisable if you
have good backups!) several builds where my package script exited
with good status after the build (or after the tests). The previous
versions (1.21.0, 1.22.1) had none of those issues.
So, I was not especially *happy* about putting this version into the
book, but resigned to it. I had previously measured a build (time,
space), but I forgot to check the size of the ~/.cargo files. Also,
it occurred to me that if root installs after a user build, root
might need to download some of the cargo files (in fact, root
downloaded all 235MB of them in my case).
But when I became root and tried a DESTDIR install a LOT of extra
time was spent building the various cargo files (so far, so
annoying) and then the install eventually failed because libssl2 was
missing. Trying to do a real install then failed in the same way,
so I reinstalled in an all-root build, without adding libssl2.
Until that time I had never heard of libssl2, and I've no idea why
it was suddenly needed. But this series of issues makes me distrust
this version of rustc.
But Bruce built 1.23.0 as a user and then installed as root without
any problems (apart from with an unset DESTDIR variable when he
wanted to do a real install), and without root downloading cargo
files or apparently rebuilding them.
Looking at other distros -
gentoo : Still on 1.19.0, they will have to change if they add
firefox-58.0 or latest librsvg.
debian : 1.23.0 moved into sid (unstable) two days ago. I can't see
anything special in what they do, but I think they do DESTDIR
installs which are then packaged up.
arch : Using 1.23.0, but everything in arch is a DESTDIR install.
fedora : No idea, I couldn't find it - their rustc seems to be
something entirely different. Maybe they use previous rust to build
current rust.
The problem with putting a DESTDIR install into the book is that it
uses over 460MB of extra space.
I think I'm going to look more deeply at rust-1.22.1, particularly
at whether it seems to build reliably as a user with a root DESTDIR
install, and whether or not it is good enough for new librsvg.
Meanwhile, my current comments on rustc-1.23.0 rhyme with "block of
white".
ĸen
--
Truth, in front of her huge walk-in wardrobe, selected black leather
boots with stiletto heels for such a barefaced truth.
- Unseen Academicals
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