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’.