Re: "fedpkg local" builds fail for rust packages

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On Mon, Apr 8, 2024 at 6:17 AM Richard W.M. Jones <rjones@xxxxxxxxxx> wrote:
>
> On Fri, Apr 05, 2024 at 03:33:35PM +0200, Fabio Valentini wrote:
> > On Fri, Apr 5, 2024 at 9:51 AM Michael J Gruber <mjg@xxxxxxxxxxxxxxxxx> wrote:
> > >
> > > So you're saying that those packages are in the repos for everyone but
> > > not meant to be installed by anyone (besides mock chroots), and that is
> > > how and why they are packaged.
> >
> > Yes. That is the best we can do given how cargo + Rust work.
> >
> > > `This package contains library source intended for building other packages which
> > > use the "xyz" crate.`
> >
> > So the description matches what I said?
> >
> > > Unless you `fedpkg local` build it. Or maybe only if you `fedpkg
> > > mockbuild` it. Does a rebuild from `fedpkg srpm` even work?
> > >
> > > Wow!
> >
> > Sorry to burst your bubble, but "fedpkg local" is an ugly hack
> > (independent of Rust peculiarities).
>
> fedpkg local works fine for almost all cases.
>
> > And I am not interested in adding workarounds to the Rust packaging
> > toolchain to support it.
> >
> > "fedpkg mockbuild" and "fedpkg srpm" all work as expected ...
> >
> > > Is there any other set of packages which we package like that?
> >
> > Probably golang ... maybe Haskell, OCaml?
>
> OCaml is definitely _not_ packaged like this.  ocaml-* and
> ocaml-*-devel packages are normal packages that can be installed by
> end users if they want, although usually only if they're developing
> OCaml software.
>

Packaged Rust crates work *fine* for local development as long as you
are willing to cut yourself off from crates.io. Unlike *every other
language package manager*, Cargo does not support multiple concurrent
indexes. This is ultimately the bottleneck, and there's been very
little interest in resolving this upstream.

Upstream issue: https://github.com/rust-lang/cargo/issues/4883

Without this feature, it becomes difficult to do development using
packaged crates.


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