Update nixpkgs to the latest revision of nixos-unstable branch

[nikolaglumac]

This PR fixes Daedalus build issues on OSX Big Sur.
Without it, Daedalus developers can not run Daedalus in local dev environment (nix-shell) given that they are on OSX Big Sur.
It is connected to the following Daedalus PR: input-output-hk/daedalus#2289

[nikolaglumac]

@disassembler @cleverca22 please review this one 🙏

[jbgi]

indeed the fix has not been backported to nixos-20.09 yet (NixOS/nixpkgs#105799), and this probably impact other projects as well.
I opened IntersectMBO/cardano-node#2250 to check if cardano-node still build against this PR. If yes, I'm ok to merge this. If not I think it's probably best to do the bump locally in Daedalus until the backport is merged.

[nikolaglumac]

indeed the fix has not been backported to nixos-20.09 yet (NixOS/nixpkgs#105799), and this probably impact other projects as well.
I opened input-output-hk/cardano-node#2250 to check if cardano-node still build against this PR. If yes, I'm ok to merge this. If not I think it's probably best to do the bump locally in Daedalus until the backport is merged.

Thanks @jbgi! Looking forward to your results...

[jonringer]

Short term, I would say try to find a good point in time for nixpkgs-unstable. Even if the backport is merged, it would take a while for the contents to end up in the release channel (because of a staging cycle that would take about a week)

[jbgi]

https://hydra.iohk.io/jobset/Cardano/cardano-node-pr-2250#tabs-errors

Failed to evaluate profiteur-0.4.5.1: «broken»: is marked as broken

I'll look into it tomorrow.

[cleverca22]

@jbgi NixOS/nixpkgs#108452 should fix it upstream

[cleverca22]

@jbgi fix is now in the haskell-updates branch and will eventually wind up in master when the next hackage2nix run happens

[nikolaglumac]

So what should we do from Daedalus perspective @cleverca22?

[jbgi]

@nikolaglumac I would suggest targeting this PR branch until it get merged soon (tm).

[nikolaglumac]

That is what we did here input-output-hk/daedalus#2289
Please let us know once this is merged into master 🙏

[nikolaglumac]

@jbgi should we update Daedalus to use the tip of this branch now that you have updated it?

[jbgi]

right. hopefully, it should be merged today if cardano-node build correctly against it.

[jbgi]

bors r+

[iohk-bors]

👎 Rejected by too few approved reviews

[jbgi]

bors r+

[jonringer]

as long as hydra passes, I'm good :)

[iohk-bors]

Build succeeded:

• ci/hydra-build:required
• buildkite/iohk-nix
• ci/hydra-eval