How to install jbake from unstable with overlay in home-manager

Question

After adding the unstable channel

nix-channel --add https://nixos.org/channels/nixpkgs-unstable unstable

I added an overlay under ~/.config/nixpkgs/overlays/package-upgrades/default.nix

self: super:
let
  unstable = import <unstable> {};
in {
  jbake = unstable.jbake;
}

This overlay is added to home.nix

nixpkgs.overlays = [ (import ./overlays/package-upgrades) ];

When I run home-manager switch there is an error

0 + john@n1 nixpkgs $ home-manager switch
Too many heap sections: Increase MAXHINCR or MAX_HEAP_SECTS

The entire configuration can be found here.

How can I upgrade a single attribute from unstable using home-manager and an overlay?

I don't think you need to explicitly add the overlay in home.nix. — Julien Langlois, Jun 02 '18 at 02:46
I agree but I think it also overrides the default of looking in .config/nixpkgs/overlays. So I can have all the overlays in the dir and specify which ones I want to use. — John Mercier, Jun 02 '18 at 14:46
I removed the line from home.nix and package-upgrades is the only overlay in use. I still get the same error. — John Mercier, Jun 02 '18 at 14:49
I don't think home-manager has much of a representation in SO at this moment. You may be better off posting an issue with that project. — Emmanuel Rosa, Jun 03 '18 at 04:35
The underlying issue _might_ be the same as for https://github.com/NixOS/nixpkgs/issues/43015 — Vladimír Čunát, Jul 06 '18 at 07:30

score 1 · Answer 1 · answered Aug 25 '19 at 12:41

This thread on nixos discourse seems relevant. It appears the overlay also gets applied when importing unstable, resulting in an infinite recursion. Try something like:

let
  unstable = import <unstable> {};
in {
  home.packages = with pkgs; [
    ...
  ] ++ (with unstable; [
    jbake
  ]);
}

How to install jbake from unstable with overlay in home-manager

1 Answers1