Other config; added new tpm package for tmux

packages/all-packages.nix

@@ -0,0 +1,3 @@
+{ pkgs, lib, config, ... }: rec {
+  tpm = pkgs.callPackage ./tpm {};
+}

packages/tpm/default.nix

@@ -0,0 +1,24 @@
+{ lib, stdenv, fetchFromGitHub }: stdenv.mkDerivation rec {
+  pname = "tpm";
+  version = "3.1.0";
+
+  src = fetchFromGitHub {
+    owner = "tmux-plugins";
+    repo = "tpm";
+    rev = "v${version}";
+    hash = "sha256-CeI9Wq6tHqV68woE11lIY4cLoNY8XWyXyMHTDmFKJKI=";
+  };
+
+  doCheck = true;
+
+  installPhase = ''
+    cp -rv $src/ $out
+  '';
+
+  meta = with lib; {
+    description = "A tmux package manager. Installs and loads tmux plugins.";
+    homepage = "https://github.com/tmux-plugins/tpm";
+    license = licenses.mit;
+    platforms = platforms.all;
+  };
+}