packaging: Add mkMeson{Library,Executable}

and:
- move pkg-config out of mkMesonDerivation, for components that don't
  produce any executable code

src/libstore/package.nix

@@ -1,6 +1,6 @@
 { lib
 , stdenv
-, mkMesonDerivation
+, mkMesonLibrary
 
 , unixtools
 
@@ -25,7 +25,7 @@ let
   inherit (lib) fileset;
 in
 
-mkMesonDerivation (finalAttrs: {
+mkMesonLibrary (finalAttrs: {
   pname = "nix-store";
   inherit version;
 
@@ -47,8 +47,6 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "sql") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
-
   nativeBuildInputs =
     lib.optional embeddedSandboxShell unixtools.hexdump;
 
@@ -91,10 +89,6 @@ mkMesonDerivation (finalAttrs: {
     LDFLAGS = "-fuse-ld=gold";
   };
 
-  separateDebugInfo = !stdenv.hostPlatform.isStatic;
-
-  hardeningDisable = lib.optional stdenv.hostPlatform.isStatic "pie";
-
   meta = {
     platforms = lib.platforms.unix ++ lib.platforms.windows;
   };