tjh.dev
1{
2 lib,
3 stdenv,
4 fetchFromGitHub,
5 ruby,
6 bundlerEnv,
7 udevCheckHook,
8}:
9let
10
11 # To create Gemfile.lock and gemset.nix
12 # > nix-shell -p bundix bundler zlib
13 # > bundle install
14 # > bundix
15 gems = bundlerEnv {
16 name = "polar-env";
17 inherit ruby;
18 gemdir = ./.;
19 };
20
21in
22stdenv.mkDerivation rec {
23
24 pname = "polar";
25 # The package has no releases so let's use the latest commit
26 version = "unstable-2021-01-12";
27
28 src = fetchFromGitHub {
29 owner = "cmaion";
30 repo = pname;
31 rev = "be15f5f897f8a919dd639009873147dca2a9cea0";
32 sha256 = "0gqkqfrqnrsy6avg372xwqj22yz8g6r2hnzbw6197b1rf7zr1il7";
33 };
34
35 prePatch = ''
36 for script in polar_*
37 do
38 substituteInPlace $script --replace "#{File.dirname(__FILE__)}/lib" "$out/lib/polar"
39 done
40 '';
41 buildInputs = [
42 gems
43 ruby
44 ];
45
46 nativeBuildInputs = [
47 udevCheckHook
48 ];
49
50 doInstallCheck = true;
51
52 # See: https://wiki.nixos.org/wiki/Packaging/Ruby
53 #
54 # Put library content under lib/polar and the raw scripts under share/polar.
55 # Then, wrap the scripts so that they use the correct ruby environment and put
56 # these wrapped executables under bin.
57 installPhase = ''
58 install -Dm644 -t $out/etc/udev/rules.d ./pkg/99-polar.rules
59 mkdir -p $out/{bin,lib/polar,share/polar}
60 cp -r lib/* $out/lib/polar/
61 for script in ./polar_*
62 do
63 raw="$out/share/polar/$script"
64 bin="$out/bin/$script"
65 cp "$script" "$raw"
66 cat > $bin <<EOF
67 #!/bin/sh -e
68 exec ${gems}/bin/bundle exec ${ruby}/bin/ruby "$raw" "\$@"
69 EOF
70 chmod +x $bin
71 done
72 '';
73
74 meta = with lib; {
75 description = "Command-line tools to interact with Polar watches";
76 longDescription = ''
77 A set of command line tools written in Ruby to interact with Polar watches
78 and decode raw data files.
79
80 Udev rules can be added as:
81
82 services.udev.packages = [ pkgs.polar ]
83 '';
84 homepage = "https://github.com/cmaion/polar";
85 license = licenses.gpl3Only;
86 maintainers = with maintainers; [ jluttine ];
87 platforms = platforms.linux;
88 };
89}