Your message dated Sat, 02 May 2020 20:54:04 +0000
with message-id <[email protected]>
and subject line Bug#959203: Removed package(s) from unstable
has caused the Debian Bug report #950989,
regarding ruby2.5 is not binNMU-safe
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
950989: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950989
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: dh-strip-nondeterminism
Version: 1.6.3-2
Severity: important
Control: affects -1 + libruby2.5

libruby2.5 is marked Multi-Arch: same. However trying to coinstall it
for multiple architectures yields an unpack error:

| Unpacking libruby2.5:ppc64el (2.5.7-1+b1) ...
| dpkg: error processing archive 
/tmp/apt-dpkg-install-ogGPd3/261-libruby2.5_2.5.7-1+b1_ppc64el.deb (--unpack):
|  trying to overwrite shared 
'/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png', 
which is different from other instances of package libruby2.5:ppc64el
| dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)

Now looking into the ruby2.5 source package, we see that there is a
macFFBgHack.png:

028ebc15ad448256635073ebedaf1282006227f4cef68a8402c6c4d7001994a8  
lib/rdoc/generator/template/darkfish/images/macFFBgHack.png

However it differs from the one being installed:

5921908de94f1f1c32b39848cab4e01738eead861484034896a5232aba8ae106  
amd64/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
9c9ea17044f29a72ec885908a94e338f478048963b70c2dff1ccba43341f82de  
arm64/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
af77542eac693dea616f874d680cc8060e554fc169ffa5c27f5b9cf7616e4ec7  
ppc64el/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
eba3347383f8247df7f6055dc3144f79313107fc4ad702b13a902d2d9c494344  
s390x/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png

Where does the difference come from?

diffoscope tells us that it likely has to do with some timestamp:

| $ diffoscope 
{amd64,ppc64el}/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
| 2020-02-06 19:27:08 W: diffoscope.main: Fuzzy-matching is currently disabled 
as the "tlsh" module is unavailable.
| --- 
amd64/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
| +++ 
ppc64el/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
| │┄ Command `sng` exited with exit code 1. Standard output:
| │┄     sng: in stdin, 0 sBIT red bits not valid for 8bit/sample image
| @@ -3,13 +3,13 @@
|  00000020: 6300 0000 0473 4249 5408 0808 087c 0864  c....sBIT....|.d
|  00000030: 8800 0000 0970 4859 7300 000b 1200 000b  .....pHYs.......
|  00000040: 1201 d2dd 7efc 0000 001c 7445 5874 536f  ....~.....tEXtSo
|  00000050: 6674 7761 7265 0041 646f 6265 2046 6972  ftware.Adobe Fir
|  00000060: 6577 6f72 6b73 2043 5333 98d6 4603 0000  eworks CS3..F...
|  00000070: 0027 7445 5874 4372 6561 7469 6f6e 2054  .'tEXtCreation T
|  00000080: 696d 6500 3230 3230 2d30 312d 3139 5431  ime.2020-01-19T1
| -00000090: 383a 3036 3a34 362d 3030 3a30 30c9 ea2c  8:06:46-00:00..,
| -000000a0: e700 0000 2849 4441 5448 89ed cd41 0100  ....(IDATH...A..
| +00000090: 373a 3438 3a33 372d 3030 3a30 30ec 38b8  7:48:37-00:00.8.
| +000000a0: 4e00 0000 2849 4441 5448 89ed cd41 0100  N...(IDATH...A..
|  000000b0: 3008 0021 b47f a755 5b0a 7f47 0106 cfb1  0..!...U[..G....
|  000000c0: bd0e 4a4a 4a4a 4a4a 4a4a 4ac0 0759 d100  ..JJJJJJJJJ..Y..
|  000000d0: f11f fc9f 8500 0000 0049 454e 44ae 4260  .........IEND.B`
|  000000e0: 82                                       .
| $

But why would anything change the timestamp of a plain png file which
isn't created during build?

A look into the build logs revewals:

https://buildd.debian.org/status/fetch.php?pkg=ruby2.5&arch=amd64&ver=2.5.7-1%2Bb1&stamp=1579457813&raw=0
|    dh_strip_nondeterminism -a
|       Using 1579457206 as canonical time
|  ...
|       Normalizing 
debian/libruby2.5/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
 using File::StripNondeterminism::handlers::png

https://buildd.debian.org/status/fetch.php?pkg=ruby2.5&arch=ppc64el&ver=2.5.7-1%2Bb1&stamp=1579456774&raw=0
|    dh_strip_nondeterminism -a
|       Using 1579456117 as canonical time
|  ...
|       Normalizing 
debian/libruby2.5/usr/lib/ruby/2.5.0/rdoc/generator/template/darkfish/images/macFFBgHack.png
 using File::StripNondeterminism::handlers::png

So what breaks macFFBgHack.png is nothing else than
dh_strip_nondeterminism.

This could affect any Multi-Arch: same package that is being binNMUed. I
think the only sane solution to this problem is having
dh_strip_nondeterminism skip binNMU changelog entries when generating
the timestamp.

Helmut

--- End Message ---
--- Begin Message ---
Version: 2.5.7-1+rm

Dear submitter,

as the package ruby2.5 has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/959203

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
[email protected].

Debian distribution maintenance software
pp.
Scott Kitterman (the ftpmaster behind the curtain)

--- End Message ---
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