sqlite: disable tests on Darwin

The tests seem to be unreliable (at least when SQLite is built by the
Nix daemon). Sometimes they succeed, but they often do not.

Even if SQLite were removed from the bootstrap, this would still be a
problem, so disable the tests for now.

pkgs/development/libraries/sqlite/default.nix

@@ -128,7 +128,8 @@ stdenv.mkDerivation rec {
     mv sqlite-doc-${archiveVersion version} $doc/share/doc/sqlite
   '';
 
-  doCheck = true;
+  # SQLite’s tests are unreliable on Darwin. Sometimes they run successfully, but often they do not.
+  doCheck = !stdenv.hostPlatform.isDarwin;
   # When tcl is not available, only run test targets that don't need it.
   checkTarget = lib.optionalString stdenv.hostPlatform.isStatic "fuzztest sourcetest";