07:56 <gwen> Hi, I'm having trouble installing elpy (attribute "elpy" missing). I'm installing emacs like described in the example in the nixos manual, and using the emacs overlay.

07:58 <gwen> essentially ((pkgs.emacsPackagesGen pkgs.emacs).emacsWithPackages (epkgs: epkgs.melpaPackages.elpy)) doesn't work

10:46 <adisbladis> gwen: What channel are you on?

10:47 <adisbladis> Or is it just that elpy is failing to build?

10:50 <equivrel> gwen: I know the issue you are having, it's because nixpkgs commit 458e3c7116852f26df58f2047416c774c1d6141b hasn't been merged into 19.09 yet.

10:50 <equivrel> the elpy python package doesn't exist anymore, so it simply needed to be removed and removed as a dependency of the emacs package elpy.

10:54 <equivrel> I think you could fix this with an overlay, you would need to overideAttrs on melpaPackages.elpy to get rid of external.elpy from propagatedUserEnvPkgs...

11:22 <gwen> equivrel: So theoretically I should be able to fix this by using the unstable channel, right?

11:23 <equivrel> gwen: yeah that should definitely fix it.

11:23 <equivrel> or cherrypicking that commit I posted onto your own custom nixpkgs