[releng] Issue #7671: Builders does not respect ExclusiveArch

[Vít Ondruch]

vondruch reported a new issue against the project: `releng` that you are following:
``
A while ago, there was a change in packaging guidelines:

https://pagure.io/packaging-committee/issue/751

And the ticket started with a claim:

>  A while back, Koji was fixed to actually pay attention to
> ExcludeArch: and ExclusiveArch: when choosing the host to build a noarch package. 
>  
I don't think that it works, testing with either this:

~~~
diff --git a/rubygem-mongo.spec b/rubygem-mongo.spec
index 1d436d7..82a9e00 100644
--- a/rubygem-mongo.spec
+++ b/rubygem-mongo.spec
@@ -26,6 +26,9 @@ BuildRequires: %{_bindir}/mongod
 BuildRequires: rubygem(bson) >= 4.3.0
 BuildRequires: rubygem(rspec)
 BuildArch: noarch
+# MongoDB serverved does not support all architectures. Use x86_64 for build
+# to be sure Koji build is always successful.
+ExclusiveArch: x86_64 noarch
 
 %description
 A Ruby driver for MongoDB.
~~~

https://koji.fedoraproject.org/koji/taskinfo?taskID=28734500

or

~~~
diff --git a/rubygem-mongo.spec b/rubygem-mongo.spec
index 1d436d7..82a9e00 100644
--- a/rubygem-mongo.spec
+++ b/rubygem-mongo.spec
@@ -26,6 +26,9 @@ BuildRequires: %{_bindir}/mongod
 BuildRequires: rubygem(bson) >= 4.3.0
 BuildRequires: rubygem(rspec)
 BuildArch: noarch
+# MongoDB serverved does not support all architectures. Use x86_64 for build
+# to be sure Koji build is always successful.
+ExclusiveArch: x86_64
 
 %description
 A Ruby driver for MongoDB.
~~~

https://koji.fedoraproject.org/koji/taskinfo?taskID=28734626

Both builds were done on i686 builders while only x86_64 builders should be used.
``

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https://pagure.io/releng/issue/7671

[Peter Robinson]

pbrobinson added a new comment to an issue you are following:
``
The i686 builders are only x86_64 and those builders can be used for either arch and are
configured as such so this is working at expected.
``

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https://pagure.io/releng/issue/7671

[Peter Robinson]

pbrobinson added a new comment to an issue you are following:
``
It's also my understanding that since mongodb moved from v8 to mozjs that it now
supports all architectures
``

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https://pagure.io/releng/issue/7671

[Vít Ondruch]

vondruch added a new comment to an issue you are following:
``
>  The i686 builders are only x86_64 and those builders can be used for
> either arch and are configured as such so this is working at expected.
>  
If i686 builds run on x86_64 builder is implementation detail IMO. I understand, that it
might be the reason why ExclusiveArch does not work, but this hardly means that my
expectations are wrong. Every time when some arch is specified somewhere in RPM, it really
means that specific architecture. You could hardly justify that PPC is used where PPC64 is
expected and vice versa.

>  It's also my understanding that since mongodb moved from v8 to
> mozjs that it now supports all architectures
>  
https://bugzilla.redhat.com/show_bug.cgi?id=1549025#c4
``

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https://pagure.io/releng/issue/7671

[Peter Robinson]

pbrobinson added a new comment to an issue you are following:
``
@vondruch in the case of PPC a build (where it's still supported) would actually run
on a ppc64 builder, there's maps for compatibility. See the hosts in koji:

PPC example: https://koji.fedoraproject.org/koji/hostinfo?hostID=229
x86 example: https://koji.fedoraproject.org/koji/hostinfo?hostID=229

But in the case of ARMv7 vs aarch64 the underlying hosts are not compatible so you
won't get a armv7hl build land on an aarch64 host for example, see all hosts and the
allows arches in the koji hosts list:
https://koji.fedoraproject.org/koji/hosts?start=50&state=enabled&...
``

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https://pagure.io/releng/issue/7671

[Vít Ondruch]

vondruch added a new comment to an issue you are following:
``
So how can I force my package to be built in x86_64 buildroot? If I understand it
correctly, I can't ATM. Is there a chance to fix it?

Also this means that this guideline change is wrong:

https://fedoraproject.org/w/index.php?title=Packaging:Guidelines&diff...
``

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https://pagure.io/releng/issue/7671

[Patrick "マルタインアンドレアス" Uiterwijk]

puiterwijk added a new comment to an issue you are following:
``
@vondruch Just looked at some of it, and I believe this is a koji bug, since koji uses the
wrong arch bit of the build to determine which arch to build for (look further down on the
taskinfo page, and it says "Arch: x86_64").
So I don't think the guideline is wrong, this is just a bug/edge-case.
``

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https://pagure.io/releng/issue/7671

[Patrick "マルタインアンドレアス" Uiterwijk]

puiterwijk added a new comment to an issue you are following:
``
Actually, just looked at your spec file, but since we are not in the module_build case,
this condition applies: `ExcludeArch:    ppc %{sparc} s390`.
That seems to be respected here.
It just doesn't list that i686 is to be excluded.
``

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https://pagure.io/releng/issue/7671

[Patrick "マルタインアンドレアス" Uiterwijk]

puiterwijk added a new comment to an issue you are following:
``
Sorry, my last comment on how it's not there was me not reading the patches and not
seeing that this was rubygem-mongo, sorry.
``

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https://pagure.io/releng/issue/7671

[Patrick "マルタインアンドレアス" Uiterwijk]

puiterwijk added a new comment to an issue you are following:
``
Is there any chance you could attach the full spec file you're building with?
``

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https://pagure.io/releng/issue/7671

[Vít Ondruch]

vondruch added a new comment to an issue you are following:
``
>  Is there any chance you could attach the full spec file you're
> building with?
>  
https://src.fedoraproject.org/rpms/rubygem-mongo/blob/master/f/rubygem-mo...

Unfortunately, the package is currently FTBFS (and that is why I am back to this issue
actually) on all arches anyway.
``

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https://pagure.io/releng/issue/7671

[Vít Ondruch]

vondruch added a new comment to an issue you are following:
``
I fixed the FTBFS, but the ExlusiveArch issues still persist:

https://koji.fedoraproject.org/koji/taskinfo?taskID=29631670
``

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https://pagure.io/releng/issue/7671

[Suzanne Yeghiayan]

The issue: `Builders does not respect ExclusiveArch` of project: `releng` has been
assigned to `mohanboddu` by syeghiay.

https://pagure.io/releng/issue/7671

[Mat Booth]

mbooth added a new comment to an issue you are following:
``
Since Eclipse went to 64bit only I am constantly hitting this issue with Eclipse
packages.

Noarch Eclipse plug-ins now have to have this in their spec:

```
# Upstream Eclipse no longer supports non-64bit arches
ExcludeArch: s390 %{arm} %{ix86}
BuildArch:      noarch
```

And maybe 1 in 10 builds get erroneously done in a i686 buildroot, e.g:
https://koji.fedoraproject.org/koji/taskinfo?taskID=35429122
``

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https://pagure.io/releng/issue/7671