Re: Preventing .build-id file conflicts between pypy3.7-libs-7.3.7-1.fc34.x86_64 and pypy3.8-libs-7.3.7-1.fc34.x86_64

[Sérgio Basto]

On Mon, 2022-02-14 at 10:34 +0100, Michal Schorm wrote:
>  The time had to come, when two packages would generate the same
> hash.
>  
>  I was hit by:
>  ---
>  Error: Transaction test error:
>    file /usr/lib/.build-id/34/feaa549462e8818baa0629ce11da344465882b
>  conflicts between attempted installs of discord-0.0.16-1.fc35.x86_64
>  and skypeforlinux-8.79.0.95-1.x86_64
>  ---
>  some time ago but since neither is a package maintained by Fedora
>  Project maintainers, no one gave a damn about the core of the issue.
>  That time, I got one of the apps as a Flatpak instead, but not all
>  packages have such workarounds at hand. 
yeah , thank you for reminder these cases (with electron apps)

we fixed with `%global         debug_package %{nil}`


>  --
>  
>  Michal Schorm
>  Software Engineer
>  Core Services - Databases Team
>  Red Hat
>  
>  --
>  
>  On Sun, Feb 13, 2022 at 2:13 PM Miro Hrončok <mhroncok(a)redhat.com&gt;
>  wrote:
>  > 
>  > Hey,
>  > apparently some ELF files are identical between Fedora's pypy3.7-
>  > libs and
>  > pypy3.8-libs packages.
>  > 
>  > On Fedora 34, this leads to installation conflict:
>  > 
>  > Error: Transaction test error:
>  >    file /usr/lib/.build-
>  > id/39/208b4f57aa4d5cfcbed13cf6c5ec428de27264 from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/40/682aae1fc61eaa03230eac9033407ce96488c9 from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/53/96df0ea06a9dd7e8eeea66aaa65dda9b64e73c from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/87/535f93c815a75349f4d56210c31d4ef4b797f2 from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/c6/bff4486941a2fb3490a80eb7b7bfe3370e8ba0 from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/c9/e94d839699198b0e87c334f8e03160fec054de from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/e4/a09cf0647ed5d0e730dcdfef7aff9f9a2e11a0 from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/e8/1db0d87e7cce4f5fcad18063f7b7fce2eb9590 from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  >    file /usr/lib/.build-
>  > id/ee/d5ab1faa168044b871001c4117fc8b7853b3c6 from
>  > install of pypy3.7-libs-7.3.7-1.fc34.x86_64 conflicts with file
>  > from package
>  > pypy3.8-libs-7.3.7-1.fc34.x86_64
>  > 
>  > As reported in https://bugzilla.redhat.com/2053880
>  > 
>  > I've read all the previous discussion about this on Fedora devel
>  > list, but I
>  > still have no idea what should I do to prevent this conflict.
>  > 
>  > Moving the files to a common component seems like a bad idea given
>  > it's not
>  > "two packages bundle the same thing" but rather "two packages built
>  > in a
>  > different way".
>  > 
>  > I see this:
>  > 
>  > https://github.com/rpm-software-management/rpm/blob/rpm-4.16.1.3/macros.i...
>  > 
>  > %{?_unique_build_ids:--build-id-seed "%{VERSION}-%{RELEASE}"}
>  > 
>  > I suppose I could pass in %{NAME} as well, right?
>  > 
>  > What are the side effects for changing the seed like this?:
>  > 
>  > %global __debug_install_post \
>  > 
>  > %{lua:print(rpm.expand('%__debug_install_post'):gsub('%-%-build%-
>  > id%-seed%s+"',
>  > rpm.expand('--build-id-seed "%{NAME}-')))}
>  > 
>  > 
>  > Actually, should RPM pass %{NAME} by default? Or at least have a
>  > macro I could
>  > redefine in a less cryptic and fragile way?
>  > 
>  > --
>  > Miro Hrončok
>  > --
>  > Phone: [phone]
>  > IRC: mhroncok
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-- 
Sérgio M. B.