EPEL8 support

[Orion Poplawski]

Is there any possibility of reasonable rust support in EPEL8?  At the 
moment we don't have rust-packaging or cargo2rpm/rust2rpm.  CentOS 
stream 8 seems to have rust/carge 1.66.1 and rust-srpm-macros 5-2.

-- 
Orion Poplawski
he/him/his  - surely the least important thing about me
IT Systems Manager                         720-772-5637
NWRA, Boulder/CoRA Office             FAX: [phone]
3380 Mitchell Lane                       orion(a)nwra.com
Boulder, CO 80301                 https://www.nwra.com/

[Neal Gompa]

On Sat, Feb 18, 2023 at 2:59 PM Orion Poplawski <orion(a)nwra.com&gt; wrote:
>  Is there any possibility of reasonable rust support in EPEL8?  At the
>  moment we don't have rust-packaging or cargo2rpm/rust2rpm.  CentOS
>  stream 8 seems to have rust/carge 1.66.1 and rust-srpm-macros 5-2.
>  
Not really. Fedora packaging of Rust stuff relies on dynamic build
dependency generation at package build time, which is not possible on
RHEL 8.

Technically, we didn't require this originally (and indeed the target
was originally for RPM 4.14+), but virtually no Fedora Rust packages
today operate at that level anymore, so in practice we need at least
RPM 4.16 now.



-- 
真実はいつも一つ！/ Always, there's only one truth!

[Fabio Valentini]

On Sat, Feb 18, 2023 at 9:03 PM Neal Gompa <ngompa13(a)gmail.com&gt; wrote:
>  On Sat, Feb 18, 2023 at 2:59 PM Orion Poplawski <orion(a)nwra.com&gt; wrote:
>  >
>  > Is there any possibility of reasonable rust support in EPEL8?  At the
>  > moment we don't have rust-packaging or cargo2rpm/rust2rpm.  CentOS
>  > stream 8 seems to have rust/carge 1.66.1 and rust-srpm-macros 5-2.
>  >
>
>  Not really. Fedora packaging of Rust stuff relies on dynamic build
>  dependency generation at package build time, which is not possible on
>  RHEL 8.
>
>  Technically, we didn't require this originally (and indeed the target
>  was originally for RPM 4.14+), but virtually no Fedora Rust packages
>  today operate at that level anymore, so in practice we need at least
>  RPM 4.16 now. 
If you want to build Rust stuff on EPEL 8, you will need to fall back
to the RHEL toolchain for doing that (which is ... not great).
There's some packages in EPEL 8 that do that, you can take a look at
these for inspiration:
https://koschei.fedoraproject.org/groups/rust-sig?collection=epel8

Fabio

[Orion Poplawski]

On 2/19/23 12:06, Fabio Valentini wrote:
>  On Sat, Feb 18, 2023 at 9:03 PM Neal Gompa <ngompa13(a)gmail.com&gt;
> wrote:
> >
> > On Sat, Feb 18, 2023 at 2:59 PM Orion Poplawski <orion(a)nwra.com&gt; wrote:
> >>
> >> Is there any possibility of reasonable rust support in EPEL8?  At the
> >> moment we don't have rust-packaging or cargo2rpm/rust2rpm.  CentOS
> >> stream 8 seems to have rust/carge 1.66.1 and rust-srpm-macros 5-2.
> >>
> >
> > Not really. Fedora packaging of Rust stuff relies on dynamic build
> > dependency generation at package build time, which is not possible on
> > RHEL 8.
> >
> > Technically, we didn't require this originally (and indeed the target
> > was originally for RPM 4.14+), but virtually no Fedora Rust packages
> > today operate at that level anymore, so in practice we need at least
> > RPM 4.16 now.
>  
>  If you want to build Rust stuff on EPEL 8, you will need to fall back
>  to the RHEL toolchain for doing that (which is ... not great).
>  There's some packages in EPEL 8 that do that, you can take a look at
>  these for inspiration:
>  https://koschei.fedoraproject.org/groups/rust-sig?collection=epel8
>  
>  Fabio 
Thanks.  Looks like many bundle their deps (among some other tweaks), 
which I suppose could be option if needed.

-- 
Orion Poplawski
he/him/his  - surely the least important thing about me
IT Systems Manager                         720-772-5637
NWRA, Boulder/CoRA Office             FAX: [phone]
3380 Mitchell Lane                       orion(a)nwra.com
Boulder, CO 80301                 https://www.nwra.com/

[Fabio Valentini]

On Mon, Feb 20, 2023 at 12:22 AM Orion Poplawski <orion(a)nwra.com&gt; wrote:
>  On 2/19/23 12:06, Fabio Valentini wrote:
>  > On Sat, Feb 18, 2023 at 9:03 PM Neal Gompa <ngompa13(a)gmail.com&gt; wrote:
>  >>
>  >> On Sat, Feb 18, 2023 at 2:59 PM Orion Poplawski <orion(a)nwra.com&gt; wrote:
>  >>>
>  >>> Is there any possibility of reasonable rust support in EPEL8?  At the
>  >>> moment we don't have rust-packaging or cargo2rpm/rust2rpm.  CentOS
>  >>> stream 8 seems to have rust/carge 1.66.1 and rust-srpm-macros 5-2.
>  >>>
>  >>
>  >> Not really. Fedora packaging of Rust stuff relies on dynamic build
>  >> dependency generation at package build time, which is not possible on
>  >> RHEL 8.
>  >>
>  >> Technically, we didn't require this originally (and indeed the target
>  >> was originally for RPM 4.14+), but virtually no Fedora Rust packages
>  >> today operate at that level anymore, so in practice we need at least
>  >> RPM 4.16 now.
>  >
>  > If you want to build Rust stuff on EPEL 8, you will need to fall back
>  > to the RHEL toolchain for doing that (which is ... not great).
>  > There's some packages in EPEL 8 that do that, you can take a look at
>  > these for inspiration:
>  > https://koschei.fedoraproject.org/groups/rust-sig?collection=epel8
>  >
>  > Fabio
>
>  Thanks.  Looks like many bundle their deps (among some other tweaks),
>  which I suppose could be option if needed. 
Yes. There are no Rust crates (i.e. Rust libraries) packaged for EPEL
8 at all, so bundling dependencies is the only option.

Fabio