1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
{
lib,
fetchFromGitHub,
stdenv,
pkg-config,
gtk4,
gtk4-layer-shell,
json-glib,
...
}:
stdenv.mkDerivation (finalAttrs: {
pname = "echo-meter";
version = "0.0.0-unstable-2025-08-26";
rev = "e6e5a70600e85edcfca3aa44153a26614b6fe55c";
srcHash = "sha256-QPQ3crm7i0L0PivlhIsPLrv1TNVwF/c+WQDRK4EtEV8=";
src = fetchFromGitHub {
owner = "Nithin-3";
repo = finalAttrs.pname;
hash = finalAttrs.srcHash;
inherit (finalAttrs) rev;
};
postPatch = ''
substituteInPlace src/echo-meter.c \
--replace-fail "gtk-layer-shell/gtk-layer-shell.h" "gtk4-layer-shell/gtk4-layer-shell.h"
'';
nativeBuildInputs = [
pkg-config
];
buildInputs = [
gtk4
gtk4-layer-shell
json-glib
];
installPhase = ''
mkdir -p $out/bin
cp ./echo-meter $out/bin
cp -r ./assets $out/share
'';
meta = {
description = "A lightweight GTK4 layer-shell application that displays always-on-top real-time audio, brightness, and microphone level indicators.";
homepage = "https://github.com/Nithin-3/echo-meter";
license = lib.licenses.mit;
maintainers = with lib.maintainers; [ zaphyra ];
platforms = lib.platforms.linux;
mainProgram = "echo-meter";
};
})