texlab: fix darwin build

pkgs/development/tools/misc/texlab/default.nix

@@ -3,7 +3,9 @@
 , rustPlatform
 , fetchFromGitHub
 , installShellFiles
+, libiconv
 , Security
+, CoreServices
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -23,7 +25,7 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  buildInputs = lib.optionals stdenv.isDarwin [ Security ];
+  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security CoreServices ];
 
   postInstall = ''
     installManPage texlab.1
@@ -32,9 +34,9 @@ rustPlatform.buildRustPackage rec {
     # links to the generated rlib and doesn't reference the dylib. I
     # couldn't find any way to prevent building this by passing cargo flags.
     # See https://gitlab.com/Kanedias/html2md/-/blob/0.2.10/Cargo.toml#L20
-    rm "$out/lib/libhtml2md.so"
+    rm "$out/lib/libhtml2md${stdenv.hostPlatform.extensions.sharedLibrary}"
     rmdir "$out/lib"
- '';
+  '';
 
   meta = with lib; {
     description = "An implementation of the Language Server Protocol for LaTeX";