below: minor packaging improvements

- Removed with lib; statement from meta;
- rev -> tag
- sha256 -> hash

Signed-off-by: Fernando Rodrigues <alpha@sigmasquadron.net>

pkgs/by-name/be/below/package.nix

@@ -16,14 +16,16 @@ rustPlatform.buildRustPackage rec {
   src = fetchFromGitHub {
     owner = "facebookincubator";
     repo = "below";
-    rev = "v${version}";
-    sha256 = "sha256-87Fdx3Jqi3dNWM5DZl+UYs031qn2DoiiWd3IysT/glQ=";
+    tag = "v${version}";
+    hash = "sha256-87Fdx3Jqi3dNWM5DZl+UYs031qn2DoiiWd3IysT/glQ=";
   };
 
   useFetchCargoVendor = true;
   cargoHash = "sha256-iRDe3zg7tfEYGLCRY6bJ6OdoT8ej0MB/vteCIf5xqNA=";
 
-  prePatch = ''sed -i "s,ExecStart=.*/bin,ExecStart=$out/bin," etc/below.service'';
+  prePatch = ''
+    sed -i "s,ExecStart=.*/bin,ExecStart=$out/bin," etc/below.service
+  '';
   postInstall = ''
     install -d $out/lib/systemd/system
     install -t $out/lib/systemd/system etc/below.service
@@ -48,11 +50,11 @@ rustPlatform.buildRustPackage rec {
   # needs /sys/fs/cgroup
   doCheck = false;
 
-  meta = with lib; {
-    platforms = platforms.linux;
-    maintainers = with maintainers; [ globin ];
+  meta = {
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ globin ];
     description = "Time traveling resource monitor for modern Linux systems";
-    license = licenses.asl20;
+    license = lib.licenses.asl20;
     homepage = "https://github.com/facebookincubator/below";
     mainProgram = "below";
   };