flk update fails because of obsolete flag

[bbjubjub2494]

Expected Behavior

flk update goes smoothly

Current Behavior

[devshell]$ flk update
error: unrecognised flag '--recreate-lock-file'
Try 'nix --help' for more information.

Possible Solution

remove all 2 occurrences of this CLI flag

Steps to Reproduce

1. clone/get devos
2. Run flk update to get nix to the latest revision
3. Restart the devShell
4. Run flk update

Context

Went to flk update this morning on https://github.com/lourkeur/config (based off 0.7) and it didn't work. This also affects trunk.

Your Environment

NixOS 20.09 x86_64

[nrdxp]

This flag still exists in the nixFlakes from nixpkgs master, which is what users will use by default. The latest nix from nix master has changed the semantics of the update command to make the --recreate-lock-file obsolete.

There have been quite a number of useful changes to Nix in the last few months, including improved documentation, so what I was planning on doing very soon, was to set the system nix from the nix flake instead of from nixpkgs so that users can enjoy all the latest changes. Once that's done, this will be resolved.

[Pacman99]

Also if you update your flake, nix flake check will be failing for another day or so, because of a bug with aarch64 nixUnstable that results in it depending libcpuid, which doesn't evaluate for aarch64. The fix has been backported, but hydra hasn't gotten to it yet.

[nrdxp]

fixed by d51cd34