ivy builds in EPEL7

[Christopher]

It's a shame that ivy-local isn't available in EPEL7.
Is this because it's part of javapackages-tools and RH has an older version
packaged in RHEL7, so javapackages-tools cannot be updated?

If that's the case, it might be helpful if the ivy-local stuffs could be
shipped separately for EPEL7.

Related: Does anybody have a good example ant/ivy package building in EPEL7
I can peek at? I'm trying to get zookeeper packaged in EPEL7, but I really
don't know how to make things work without ivy-local. I'm a maven person,
and ivy is a so completely foreign to me, I'm not sure where to start. I
know it's possible to resolve locally, but I'm just not sure how to make it
work, and I learn best by example. Any help is appreciated.

[Mikolaj Izdebski]

On 12/23/2016 04:02 AM, Christopher wrote:
> It's a shame that ivy-local isn't available in EPEL7.
> Is this because it's part of javapackages-tools and RH has an older version
> packaged in RHEL7, so javapackages-tools cannot be updated?

It would be technically possible to ship updated javapackages-tools in
EPEL 7 (and even EPEL 6) - upstream supports installation on EL 6/7.
Package names would need to be different (eg. javapackages-tools4,
ivy-local4 etc.) due to EPEL policy of not overriding EL packages.

One of the biggest problem I can see is that EL 7 uses different Maven
metadata format (aka "depmaps"), while current Fedora and current
javapackages-tools use new metadata format. But there are scripts to
convert between these two formats.
> If that's the case, it might be helpful if the ivy-local stuffs could be
> shipped separately for EPEL7.

That should be possible too, but would probably require more work.
> Related: Does anybody have a good example ant/ivy package building in EPEL7
> I can peek at? I'm trying to get zookeeper packaged in EPEL7, but I really
> don't know how to make things work without ivy-local. I'm a maven person,
> and ivy is a so completely foreign to me, I'm not sure where to start. I
> know it's possible to resolve locally, but I'm just not sure how to make it
> work, and I learn best by example. Any help is appreciated.

Local Ivy resolution mode is not implemented in RHEL 7, but RPM builds
can patch ivy.xml to use pattern-based resolver, pointed to javadir.
Such approach is demonstrated in EL's ant-contrib package:

https://git.centos.org/tree/rpms!ant-contrib/c7

[Mikolaj Izdebski]

On 12/23/2016 09:18 AM, Mikolaj Izdebski wrote:
> On 12/23/2016 04:02 AM, Christopher wrote:
> > It's a shame that ivy-local isn't available in EPEL7.
> > Is this because it's part of javapackages-tools and RH has an older version
> > packaged in RHEL7, so javapackages-tools cannot be updated?
>
> It would be technically possible to ship updated javapackages-tools in
> EPEL 7 (and even EPEL 6) - upstream supports installation on EL 6/7.
> Package names would need to be different (eg. javapackages-tools4,
> ivy-local4 etc.) due to EPEL policy of not overriding EL packages.

An approach like that can be seen in software collections, where more
recent versions of Fedora Java packages are built for EL 6/7:

http://ftp.icm.edu.pl/pub/Linux/distributions/centos/7/sclo/x86_64/rh/rh-jav...

http://ftp.icm.edu.pl/pub/Linux/distributions/centos/6/sclo/x86_64/rh/rh-jav...