Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [Problem: nothing provides requested (python3dist(flit-core) < 4~~ with python3dist(flit-core) >= 3.12)
WARNING: DNF5 command failed, retrying, attempt #3, sleeping 10s]: [The DNF5 command fails since there is a dependency which is not available from any source]
=============
[ERROR: Command failed: 
 # /usr/bin/systemd-nspawn -q -M cbe9e2faae7f43b6ad0663fdc55b13bc -D /var/lib/mock/fedora-42-x86_64-bootstrap-1746776964.163860/root -a --capability=cap_ipc_lock --rlimit=RLIMIT_NOFILE=10240 --capability=cap_ipc_lock --bind=/tmp/mock-resolv.msb6yihu:/etc/resolv.conf --console=pipe --setenv=TERM=vt100 --setenv=SHELL=/bin/bash --setenv=HOME=/var/lib/mock/fedora-42-x86_64-1746776964.163860/root/installation-homedir --setenv=HOSTNAME=mock --setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin '--setenv=PROMPT_COMMAND=printf "\033]0;<mock-chroot>\007"' '--setenv=PS1=<mock-chroot> \s-\v\$ ' --setenv=LANG=C.UTF-8 --setenv=LC_MESSAGES=C.UTF-8 --setenv=SYSTEMD_NSPAWN_TMPFS_TMP=0 --setenv=SYSTEMD_SECCOMP=0 --resolv-conf=off /usr/bin/dnf5 builddep --installroot /var/lib/mock/fedora-42-x86_64-1746776964.163860/root/ --releasever 42 '/var/lib/mock/fedora-42-x86_64-1746776964.163860/root/builddir/build/SRPMS/python-stestr-4.2.0-1.fc42~bootstrap.buildreqs.nosrc.rpm' --setopt=deltarpm=False --setopt=allow_vendor_change=yes --allowerasing --setopt=tsflags=nocontexts --setopt=tsflags=nocontexts --setopt=tsflags=nocontexts]: [The container is unable to spawn, because a required package is missing  python3dist(flit-core).]

Issue: Missing package as dependency, (python3dist(flit-core) < 4~~ with python3dist(flit-core) >= 3.12)
Resolution: Package dependency needs to be met, so if required the package needs to be built from source before the build step.