1  { sources ? import ../../nix
 2  , lib ? sources.lib
 3  , pkgs ? sources.nixpkgs { }
 4  }:
 5  
 6  with pkgs;
 7  let avrlibc = pkgsCross.avr.libcCross; in
 8  rec {
 9    qmkSource = fetchgit {
10      url = "https://github.com/qmk/qmk_firmware";
11      rev = "0.10.50";
12      sha256 = "162rvhqyx25fz39395vhhk3allbfn4bd8c1afj8ip9r27zwnqrwd";
13      fetchSubmodules = true;
14    };
15  
16    layout = stdenv.mkDerivation rec {
17      name = "ergodox_ez_sbr.hex";
18  
19      src = qmkSource;
20  
21      buildInputs = [
22        dfu-programmer
23        dfu-util
24        diffutils
25        git
26        python3
27        pkgsCross.avr.buildPackages.binutils
28        pkgsCross.avr.buildPackages.gcc8
29        avrlibc
30        avrdude
31      ];
32  
33      AVR_CFLAGS = [
34        "-isystem ${avrlibc}/avr/include"
35        "-L${avrlibc}/avr/lib/avr5"
36      ];
37  
38      AVR_ASFLAGS = AVR_CFLAGS;
39  
40      patches = [ ./increase-tapping-delay.patch ];
41  
42      postPatch = ''
43        mkdir keyboards/ergodox_ez/keymaps/sbr
44        cp ${./keymap.c} keyboards/ergodox_ez/keymaps/sbr/keymap.c
45        cp ${./config.h} keyboards/ergodox_ez/keymaps/sbr/config.h
46        cp ${./rules.mk} keyboards/ergodox_ez/keymaps/sbr/rules.mk
47      '';
48  
49      buildPhase = ''
50        make ergodox_ez:sbr
51      '';
52  
53      installPhase = ''
54        cp ergodox_ez_sbr.hex $out
55      '';
56    };
57  
58    flash = writeShellScript "flash.sh" ''
59      ${teensy-loader-cli}/bin/teensy-loader-cli \
60        -v \
61        --mcu=atmega32u4 \
62        -w ${layout}
63    '';
64  
65    meta.targets = [ "layout" ];
66  }