nix-fetchers-c: Init with settings object

Also make it a dependency of nix-flake-c; we'll need that.

src/libflake-c/meson.build

@@ -17,12 +17,14 @@ subdir('nix-meson-build-support/deps-lists')
 deps_private_maybe_subproject = [
   dependency('nix-util'),
   dependency('nix-store'),
+  dependency('nix-fetchers'),
   dependency('nix-expr'),
   dependency('nix-flake'),
 ]
 deps_public_maybe_subproject = [
   dependency('nix-util-c'),
   dependency('nix-store-c'),
+  dependency('nix-fetchers-c'),
   dependency('nix-expr-c'),
 ]
 subdir('nix-meson-build-support/subprojects')

src/libflake-c/package.nix

@@ -4,6 +4,7 @@
 
   nix-store-c,
   nix-expr-c,
+  nix-fetchers-c,
   nix-flake,
 
   # Configuration Options
@@ -35,6 +36,7 @@ mkMesonLibrary (finalAttrs: {
   propagatedBuildInputs = [
     nix-expr-c
     nix-store-c
+    nix-fetchers-c
     nix-flake
   ];