Thanks for these changes. This looks good so I am merging in.

I did have one question though just out of curiosity. In matterhorn-chat/matterhorn#679 you said that you don't actually use matterhorn. However if I remember correctly, you're always the one that updates/fixes it in nixpkgs. Why do you fix it if you don't use it?

gotta pump up my PR numbers if I ever want to get commit bit! 😈

earlier on Discord:

@cdepillabout can we just assume that anything i fix is going to require the overrides forever ;_;
not that i don't like inflating my PR count with essentially the same PRs every few weeks...
"so kiwi what makes you think you're qualified to be a nixpkgs committer?" "well I've made 800 prs to these 3 packages on nixpkgs" "..." "can haz commit?"

More seriously though @evils uses it and I'm sure other people do too and he does most of the work on Kicad so it's the least I could do for him. and who knows, maybe I'll want to use it someday and I won't even have to fix/package it first when I do! 😄 . I like to make sure things work and are available in nixpkgs and that goes a lot smoother if there's at least, and preferably more than, one maintainer listed. Not all maintainers are even that active. or around at all. So when I find something that's been broken for a while or I am interested in using or if I just want to take on some of the work (hi @florianjacob) to get things done quicker (I have a lot of free time and nothing to do) I'll fix/upgrade/package it and put my name down. If nobody else has done it by the time I do it then who knows if or when something will work again. (like the bitwarden-desktop client, a few znc plugins i needed to replace my freebsd server, MLV.APP, and simplenote I wanted to try and had to package) So if I can figure it out I do it.. "No Issues, only PRs!" 😛 . ...I still need to make a few of those work on darwin now that I have a builder...

...Sometimes I'll fix something that breaks in nixos-unstable and come to make the PR and there is already one, other times it's been weeks or months without attention. I think at least half a dozen people tried getting ocrmypdf packaged before I did... it took me a few months and I've never used it other than to test but I know other people do because they file issues when it breaks. lol (I have used the program but the one PDF I needed it for I processed with the brew package on macos while I was getting used to NixOS in a VM on my laptop and an old desktop someone was throwing away). That's also how I ended up having nixops-digitalocean 😢 It got axed when nixops 2 went with the plugin system and nobody had converted it to a plugin for a few months and so I gave it a shot... anyway...

tl;dr: somebody's gotta do it and if I can figure it out and have time (I usually do) then it might as well be me because if I don't maybe no-one will and it gives me something to do and a way to help. same reason I'm making all of these stickers to give maintainers (hi @jonringer)

Well thanks for spending the time to get this stuff working!