buildSkawarePackage: pass through extra args

This allows things like hooks other than postInstall to be passed
through to mkDerivation, which is very useful when customising or
debugging a package.

pkgs/build-support/skaware/build-skaware-package.nix

@@ -18,12 +18,15 @@ in {
 , configureFlags
   # mostly for moving and deleting files from the build directory
   # : lines
-, postInstall
+, postInstall ? ""
+  # : lines
+, postFixup ? ""
   # : list Maintainer
 , maintainers ? []
-
-
-}:
+  # : attrs
+, meta ? {}
+, ...
+} @ args:
 
 let
 
@@ -50,16 +53,12 @@ let
     "README.*"
   ];
 
-in stdenv.mkDerivation {
-  name = "${pname}-${version}";
-
+in stdenv.mkDerivation ({
   src = fetchurl {
     url = "https://skarnet.org/software/${pname}/${pname}-${version}.tar.gz";
     inherit sha256;
   };
 
-  inherit outputs;
-
   dontDisableStatic = true;
   enableParallelBuilding = true;
 
@@ -84,13 +83,11 @@ in stdenv.mkDerivation {
        noiseFiles = commonNoiseFiles;
        docFiles = commonMetaFiles;
      }} $doc/share/doc/${pname}
-
-    ${postInstall}
-  '';
+  '' + postInstall;
 
   postFixup = ''
     ${cleanPackaging.checkForRemainingFiles}
-  '';
+  '' + postFixup;
 
   meta = {
     homepage = "https://skarnet.org/software/${pname}/";
@@ -98,6 +95,9 @@ in stdenv.mkDerivation {
     license = stdenv.lib.licenses.isc;
     maintainers = with lib.maintainers;
       [ pmahoney Profpatsch ] ++ maintainers;
-  };
+  } // meta;
 
-}
+} // builtins.removeAttrs args [
+  "sha256" "configureFlags" "postInstall" "postFixup"
+  "meta" "description" "platforms"  "maintainers"
+])