bug#73002: Julia packages are not reproducible

bug#73002: Julia packages are not reproducible

[Ludovic Courtès]

Currently Julia packages, as built with Julia 1.8.3, are not
reproducible.  Here’s a small sample:

--8<---------------cut here---------------start------------->8---
$ guix challenge julia-csv julia-preferences julia-crayons 
/gnu/store/6yh8jmdbgnz41rgqk898629jhhxsgksi-julia-crayons-4.1.1 contents differ:
  no local build for '/gnu/store/6yh8jmdbgnz41rgqk898629jhhxsgksi-julia-crayons-4.1.1'
  https://ci.guix.gnu.org/nar/lzip/6yh8jmdbgnz41rgqk898629jhhxsgksi-julia-crayons-4.1.1: 1hjz4h51g42fqzwq3z28bddc8sfs5cyv2xsmw5gscapjhlkg1whc
  https://bordeaux.guix.gnu.org/nar/lzip/6yh8jmdbgnz41rgqk898629jhhxsgksi-julia-crayons-4.1.1: 01aiycvx8yp68fsssszaqnlkxabh63v542l0x6q5z2sf85n2317m
  differing file:
    /share/julia/compiled/v1.8/Crayons/TXPcU_FeJYN.ji
/gnu/store/cz3pk9ch9xkrrq9dxhb390z3vgifjhm8-julia-preferences-1.2.2 contents differ:
  no local build for '/gnu/store/cz3pk9ch9xkrrq9dxhb390z3vgifjhm8-julia-preferences-1.2.2'
  https://ci.guix.gnu.org/nar/lzip/cz3pk9ch9xkrrq9dxhb390z3vgifjhm8-julia-preferences-1.2.2: 0m4x1cmy6ff5zi9i3cvmssry45g6d9x4cvmdnj1dnx6dyni4dc9n
  https://bordeaux.guix.gnu.org/nar/lzip/cz3pk9ch9xkrrq9dxhb390z3vgifjhm8-julia-preferences-1.2.2: 1xk0nhl12wgdwmbh4xinagk9s1qm58fzz84iirjnwq5162sl90ci
  differing file:
    /share/julia/compiled/v1.8/Preferences/pWSk8_CTiKV.ji
/gnu/store/s7qnqsig3d43z412arw4802yrb98drj8-julia-csv-0.10.4 contents differ:
  no local build for '/gnu/store/s7qnqsig3d43z412arw4802yrb98drj8-julia-csv-0.10.4'
  https://ci.guix.gnu.org/nar/lzip/s7qnqsig3d43z412arw4802yrb98drj8-julia-csv-0.10.4: 0cw248s4wviy52bb2j04gf2pwih2am1mkyf37289br625sw3k7vb
  https://bordeaux.guix.gnu.org/nar/lzip/s7qnqsig3d43z412arw4802yrb98drj8-julia-csv-0.10.4: 00b0agj1mncji8j5v9k4cq4lw46iviz7xcrrm5s6sr22ay6hvphn
  differing file:
    /share/julia/compiled/v1.8/CSV/HHBkp_Mz514.ji

3 store items were analyzed:
  - 0 (0.0%) were identical
  - 3 (100.0%) differed
  - 0 (0.0%) were inconclusive
$ guix describe
Generation 316  Sep 01 2024 23:38:54    (current)
  guix f88a946
    repository URL: https://git.savannah.gnu.org/git/guix.git
    commit: f88a946249d75b9e8fa310471e7f2fec91d9790b
--8<---------------cut here---------------end--------------->8---

Ludo’.

bug#73002:

[King, Spencer via Bug reports for GNU Guix]

For what it's worth I had been running into reproducibility issues with a couple of Julia packages I was working on as well, one example being https://issues.guix.gnu.org/72896. I assume the cause is the same as what you're seeing here.

Best,
Spencer

bug#73002: Julia packages are not reproducible

[Simon Tournier]

Hi Ludo,

On Tue, 03 Sep 2024 at 13:56, Ludovic Courtès <ludovic.courtes@inria.fr> wrote:

> Currently Julia packages, as built with Julia 1.8.3, are not
> reproducible.  Here’s a small sample:

Duplicate with:

        bug#47354: (build-system julia) not reproducible
        zimoun <zimon.toutoune@gmail.com>
        Wed, 24 Mar 2021 01:37:07 +0100
        id:86o8f9idzg.fsf@gmail.com
        https://issues.guix.gnu.org/47354
        https://issues.guix.gnu.org/msgid/86o8f9idzg.fsf@gmail.com
        https://yhetil.org/guix/86o8f9idzg.fsf@gmail.com

Please also consider:

        bug#22304: Build for Julia is not reproducible
        Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
        Mon, 04 Jan 2016 17:28:42 +0100
        id:idj1t9xia11.fsf@bimsb-sys02.mdc-berlin.net
        https://issues.guix.gnu.org/22304
        https://issues.guix.gnu.org/msgid/idj1t9xia11.fsf@bimsb-sys02.mdc-berlin.net
        https://yhetil.org/guix/idj1t9xia11.fsf@bimsb-sys02.mdc-berlin.net

Well, IIRC, upstream was not receptive about tackling that problem, see
upstream issue#34753.

    https://github.com/JuliaLang/julia/issues/34753

Somehow, it’s seem the same kind of situation as Guile and
non-reproducible .go. ;-) Tackling the problem implies a deep-dive into
the compiler’s internals that requires a lot of efforts without the help
of core upstream.

Please note that Julia had been removed from Debian on 2022 [1], thus it
does not seem under the radar of ReproducibleBuilds.

Cheers,
simon

1: https://tracker.debian.org/pkg/julia