On Wed, 2021-05-26 at 13:00 +0200, Petr Pisar wrote:
> V Wed, May 26, 2021 at 10:30:54AM +0100, Sérgio Basto napsal(a):
> > fedpkg clone debhelper
> > cd debhelper
> > fedpkg srpm && mock -r epel-8-x86_64 --no-clean --rebuild debhelper-
> > 13.3.4-1.fc35.src.rpm
> >
> > I can build the package in _all_ others branches but
>
> In epel7 too?
Doesn't build at all in epel 7 (1)
>From debhelper (13.1) changelog: "Dh_Lib.pm: Require perl v5.24
(available in Debian oldstable) to enable more modern features. "
(1)
Perl v5.24.0 required--this is only v5.16.3, stopped at
/builddir/build/BUILD/debhelper-13.3.4/lib/Debian/Debhelper/Dh_Lib.pm
line 9.
> > in epel8 ends with
> > "Initialization of state variables in list context currently
> > forbidden
> > at /builddir/build/BUILD/debhelper-
> > 13.3.4/lib/Debian/Debhelper/Dh_Lib.pm line 2021, near");" "
> >
> perl has a "splain" tool which explains the compiler errors and
> warnings:
>
> $ splain
> /usr/bin/splain: Reading from STDIN
> Initialization of state variables in list context currently forbidden
> at /home/test/fedora/debhelper/debhelper-
> 13.3.4/lib/Debian/Debhelper/Dh_Lib.pm line 2021, near ");"
> Initialization of state variables in list context currently forbidden
> at
> /home/test/fedora/debhelper/debhelper-
> 13.3.4/lib/Debian/Debhelper/Dh_Lib.pm line 2021, near ");" (#1)
> (F) state only permits initializing a single scalar variable, in
> scalar
> context. So state $a = 42 is allowed, but not state ($a) = 42. To
> apply
> state semantics to a hash or array, store a hash or array reference
> in a
> scalar variable.
>
> What do we have at the line 2021?:
>
> state %rrr = map { $_ => 1 } split(' ', $rrr_env);
>
> That's it. perl 5.26.3 does not support "state" declaration for hashes
> (%err).
> Here is a one-line reproducer:
>
> $ perl -e 'use v5.24; sub foo {state %rrr = map { $_ => 1 } split(q{ },
> q{});}'
> Initialization of state variables in list context currently forbidden
> at -e line 1, near ");"
> Execution of -e aborted due to compilation errors.
>
> Which can be reduced to:
>
> $ perl -e 'use v5.24; state %rrr = ();'
> Initialization of state variables in list context currently forbidden
> at -e line 1, near ");"
> Execution of -e aborted due to compilation errors.
>
> Please note that the "use v5.24;" statement is taken from debhelper
> code.
> It's obviously an upstream bug. The code is not valid syntax for perl
> 5.24.
>
> The state support for non-scalar types was implemented in Perl 5.28.0
> (see
> "perldoc perl5280delta" command output):
>
> Initialisation of aggregate state variables
> A persistent lexical array or hash variable can now be initialized,
> by
> an expression such as "state @a = qw(x y z)". Initialization of a
> list
> of persistent lexical variables is still not possible.
>
> You should reach out depbhelp upstream to correct the "use v5.24;" into
> "use
> v5.28;". Or you can ask them to refactor the code to support perl 5.26.
>
> If you insist on using that debhelper version on RHEL-8, you can try
> switching
> to perl:5.30 module stream which delivers Perl 5.30.1. But you will
> have to
> rebuild most of the dephelper dependencies for the new perl yourself.
> (Because
> EPEL support for modules is, ehm, mostly undefined and unhelpful.)
>
> -- Petr
>
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--
Sérgio M. B.
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