bluetooth_battery: init at 1.2.0

[cheriimoya]

Motivation for this change

I have a bluetooth headset that's capable of reporting the battery state. This tool allows for reading the battery percentage from my bluetooth headphones. I'd like to have this upstream, because i use it in my statusbar and it may be useful to many people.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[cheriimoya]

cc @ajs124

[mweinelt]

This does not look like a library to me, but rather a case for buildPythonApplication.

[cheriimoya]

true, must have missed that when copying the expression from another package

[SuperSandro2000]

Result of nixpkgs-review pr 103023 run on x86_64-darwin 1

1 package marked as broken and skipped:

• bluetooth_battery

[mweinelt]

The software seems a bit rough around the edges, but generally seems to work.

$ ./results/bluetooth_battery/bin/bluetooth_battery 
Usage: bl_battery.py <BT_MAC_ADDRESS_1>[.PORT] ...
         Port number is optional

Easy enough. But what do they mean by a port? And where to I find the MAC of my bluetooth devices?

$ ./results/bluetooth_battery/bin/bluetooth_battery  --help
<blocks>

Fine, bluetoothctl has those. My headphones are connected and I'm listening to music. Let's see how this goes:

$ ./results/bluetooth_battery/bin/bluetooth_battery CC:98:8B:XX:XX:XX
CC:98:8B:XX:XX:XX is offline (111, 'Connection refused')
$ ./results/bluetooth_battery/bin/bluetooth_battery CC:98:8B:XX:XX:XX
Battery level for CC:98:8B:XX:XX:XX is 50%

So yeah, seems to work generally. I'd love me some upower integration here. Until then, let's use this. Thanks for packaging it up, @cheriimoya.

[cheriimoya]

mmh yea, so the maintainer of the original code responded to a recent issue of mine, i think you have the same issue right there...

this fork has a nice readme update on how to find the bluetooth MACs

i didn't quite get the "port" part of the project either, i think it's more like a bluetooth channel (i guess?)

and for the upower part there is also an issue

@mweinelt

[mweinelt]

mmh yea, so the maintainer of the original code responded to a recent issue of mine, i think you have the same issue right there...

also the same headphones 😄

Thanks!