Add nix package

nix/default.nix

@@ -0,0 +1,3 @@
+{ pkgs ? import <nixpkgs> { } }:
+
+pkgs.callPackage ./imgfloat-client.nix { }

nix/imgfloat-client.nix

@@ -0,0 +1,48 @@
+{ lib
+, buildNpmPackage
+, fetchFromGitHub
+, makeWrapper
+, electron
+}:
+
+buildNpmPackage rec {
+  pname = "imgfloat-client";
+  version = "1.0.5";
+
+  src = fetchFromGitHub {
+    owner = "imgfloat";
+    repo = "client";
+    rev = "v${version}";
+    hash = lib.fakeSha256;
+  };
+
+  npmDepsHash = lib.fakeSha256;
+  npmBuild = false;
+  npmFlags = [ "--ignore-scripts" ];
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ electron ];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/share/imgfloat
+    cp -R src res package.json node_modules $out/share/imgfloat/
+
+    mkdir -p $out/bin
+    makeWrapper ${lib.getExe electron} $out/bin/imgfloat \
+      --add-flags $out/share/imgfloat/src/main.js \
+      --set-default ELECTRON_IS_DEV 0
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Electron based desktop client for viewing the imgfloat broadcast dashboard";
+    homepage = "https://github.com/imgfloat/client";
+    license = licenses.mit;
+    mainProgram = "imgfloat";
+    platforms = platforms.linux;
+    maintainers = [];
+  };
+}