Fix nix shell

[f-f]

Description

#5558 missed a flake update

Checklist

• Commits in meaningful sequence and with useful messages.
• Tests added or updated when needed.
• CHANGELOG.md files updated for packages with externally visible changes.
  NOTE: New section is never added with the code changes. (See RELEASING.md).
• Versions updated in .cabal and CHANGELOG.md files when necessary, according to the
  versioning process.
• Version bounds in .cabal files updated when necessary.
  NOTE: If bounds change in a cabal file, that package itself must have a version increase. (See RELEASING.md).
• Code formatted (use scripts/fourmolize.sh).
• Cabal files formatted (use scripts/cabal-format.sh).
• CDDL files are up to date (use scripts/gen-cddl.sh)
• hie.yaml updated (use scripts/gen-hie.sh).
• Self-reviewed the diff.

[teodanciu]

Is this right though? It is undoing the change made in #5558

from: tag: 3da1ceec493ade9bc6347e342ca51054cc166e78
to: tag: ce149016c8294b9b91a9ee91fdbc449d6bb91a97

Wasn't this change necessary for the other changes in that PR?

Sorry, I'm wrong.

[neilmayhew]

This won't work because the narHash field is unchanged. You need to use nix flake update. The instructions are here.

[f-f]

Oh of course. I pushed the right update. Thanks @neilmayhew!

[teodanciu]

Looks good to me

[f-f]

well that's fun. I tried this locally and the narHash is now wrong? It wants the old hash 🤔