allowUnfree and overlays

[domenkozar]

Fixes #154 #185

You can now do devenv.yaml:

allowUnfree: true
inputs:
  nixpkgs:
    url: github:NixOS/nixpkgs/nixpkgs-unstable
  rust-overlay:
    url: github:oxalica/rust-overlay
    overlays:
      - default

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View logs

[shyim]

Will this need that the user update devenv on their machine or is it enough that youre modules update

[domenkozar]

You'll need to update devenv :)

[kubukoz]

Works great for me!

@domenkozar have you thought about the UX of this? e.g. if someone tries to use this feature with an older version, can we nudge them towards an update? I guess that'd have to be a generic "couldn't parse config, maybe you need to update?" message.

[domenkozar]

I was thinking about the UX. Now that we use strictyaml for validation we can do this and nudge people to upgrade.

I'm also thinking to add a field like minimalVersion: XXX to devenv.yaml that would kind of tell users straight away which version the project needs.

[domenkozar]

Moved the scope for the UX into #388

[kubukoz]