[nix] Use local mirror to host ftdichip artefacts

FTDI's severs are bocking automated donwloads

Signed-off-by: Douglas Reis <doreis@lowrisc.org>

Author: engdoreis

nix/ft4222.nix

@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   pname = "ft4222";
   version = "1.4.4.232";
   src = fetchzip {
-    url = "https://ftdichip.com/wp-content/uploads/2025/04/libft4222-linux-${version}.zip";
+    url = "https://storage.googleapis.com/lowrisc-ci-cache/external/libft4222-linux-${version}.zip";
     hash = "sha256-WGy6llULMvjPcc8L1e7qPh9xYB1a2sFKyoLI7WZWNp0=";
   };
 

nix/ftd2xx.nix

@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   pname = "ftd2xx";
   version = "1.4.34";
   src = fetchzip {
-    url = "https://ftdichip.com/wp-content/uploads/2025/11/libftd2xx-linux-x86_64-${version}.tgz";
+    url = "https://storage.googleapis.com/lowrisc-ci-cache/external/libftd2xx-linux-x86_64-${version}.tgz";
     hash = "sha256-O47VO8DpNJt2VTjvyEwA4sxLegUrwdazeIh3JHW2URI=";
   };
 

nix/libmpsse.nix

@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   pname = "libmpsse";
   version = "1.0.8";
   src = fetchzip {
-    url = "https://ftdichip.com/wp-content/uploads/2025/08/libmpsse-x86_64-${version}.tgz";
+    url = "https://storage.googleapis.com/lowrisc-ci-cache/external/libmpsse-x86_64-${version}.tgz";
     hash = "sha256-9JwRDfQj6KMV+k1WxgKq6IB3hgSXNI9sqX3NNQz2n3c=";
   };