Re: [lmi] Creating a chroot for cross-building lmi

[Greg Chicares]

On 2020-05-16 22:03, Greg Chicares wrote:

[...debootstrap options]

>  - I chose 'sid' because I know I don't have it cached anywhere.
>  - I specified '--variant=minbase' because it should be smallest (and
>      who knows, it might be as good for building lmi as the default).

'--variant=minbase' does have some benefit: for example, it
excludes cron, fdisk, and nano, none of which are really
needed in a chroot. Omitting it causes half again as much
stuff to be downloaded:

#rm -rf /tmp/sid-chroot ; mkdir -p /tmp/sid-chroot ; time debootstrap 
--arch=amd64 --cache-dir=/tmp/sidcache --variant=minbase --include=zsh sid 
/tmp/sid-chroot 2>&1 |tee siderr |less -S
debootstrap --arch=amd64 --cache-dir=/tmp/sidcache --variant=minbase  sid  2>  
32.45s user 9.62s system 62% cpu 1:07.29 total
tee siderr  0.01s user 0.01s system 0% cpu 1:07.29 total
less -S  0.02s user 0.01s system 0% cpu 1:47.13 total
#du -sb /tmp/sidcache
38957612        /tmp/sidcache

#rm -rf /tmp/sid-chroot ; mkdir -p /tmp/sid-chroot ; time debootstrap 
--arch=amd64 --cache-dir=/tmp/sidcache --include=zsh sid /tmp/sid-chroot 2>&1 
|tee siderr |less -S
debootstrap --arch=amd64 --cache-dir=/tmp/sidcache --include=zsh sid  2>&1  
52.81s user 14.53s system 52% cpu 2:08.77 total
tee siderr  0.00s user 0.04s system 0% cpu 2:08.77 total
less -S  0.03s user 0.01s system 0% cpu 2:36.15 total
#du -sb /tmp/sidcache
56839516        /tmp/sidcache

56839516 / 38957612 = 1.459

Incidentally:
  time some_command 2>&1 |less
gives only the total time, including time spent in 'less', so
it's not very useful; but with
  time some_command 2>&1 |tee log_file |less -S
zsh prints a line with 'time' output for the command only.
I'm really glad I've stumbled across that.

BTW, at least with 'sid', I get this diagnostic numerous times:
  it looks like wine32 is missing, you should install it.
  as root, please execute "apt-get install wine32"
even though I'd already done
  dpkg --add-architecture i386
as recommended here:
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=739081#10
before doing
  apt-get install wine
so I'll try something like
-  apt-get install wine
+  apt-get install wine wine32
if the problem occurs with a fresh 'bullseye' chroot.