nixpkgs-lint: modernize

Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>

maintainers/scripts/nixpkgs-lint.nix

@@ -10,6 +10,9 @@ stdenv.mkDerivation {
   pname = "nixpkgs-lint";
   version = "1";
 
+  __structuredAttrs = true;
+  strictDeps = true;
+
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = [
     perl
@@ -20,16 +23,20 @@ stdenv.mkDerivation {
   dontBuild = true;
 
   installPhase = ''
+    runHook preInstall
+
     mkdir -p $out/bin
     cp ${./nixpkgs-lint.pl} $out/bin/nixpkgs-lint
     # make the built version hermetic
     substituteInPlace  $out/bin/nixpkgs-lint \
       --replace-fail "#! /usr/bin/env nix-shell" "#! ${lib.getExe perl}"
     wrapProgram $out/bin/nixpkgs-lint --set PERL5LIB $PERL5LIB
+
+    runHook postInstall
   '';
 
   meta = {
-    description = "A utility for Nixpkgs contributors to check Nixpkgs for common errors";
+    description = "Utility for Nixpkgs contributors to check Nixpkgs for common errors";
     mainProgram = "nixpkgs-lint";
     platforms = lib.platforms.unix;
   };