[Laptop] Add option to force PCIe ASPM

packages/aspm_enable/default.nix

@@ -0,0 +1,38 @@
+{lib
+,bc
+,pciutils
+,gnugrep
+,coreutils
+,bash
+,writeText
+,stdenv
+,substituteAll
+}:
+with lib;
+stdenv.mkDerivation rec {
+  pname = "aspm_enable";
+  version = "2022-04-09";
+
+  src = ./src;
+
+  installPhase = ''
+    mkdir -p $out/bin;
+    cp -v aspm_enable.sh $out/bin/aspm_enable
+    substituteInPlace $out/bin/aspm_enable \
+      --replace bc ${bc}/bin/bc \
+      --replace lspci ${pciutils}/bin/lspci \
+      --replace setpci ${pciutils}/bin/setpci \
+      --replace grep ${gnugrep}/bin/grep;
+    substituteAllInPlace $out/bin/aspm_enable;
+  '';
+
+  buildInputs = [ pciutils bc coreutils gnugrep ];
+
+  meta = {
+    description = "A program to forcibly enable PCIe ASPM for compatible devices";
+    homepage = "https://wireless.wiki.kernel.org/en/users/Documentation/ASPM";
+    license = licenses.gpl3Plus;
+    patforms = [ "x86_64-linux" "i686-linux" "aarch64-linux" "mipsel-linux" ];
+    maintainers = with maintainers; [ ];
+  };
+}