Add GNU/Hurd support (#2131)

Author: sthibaul

.github/workflows/ci.yml

@@ -271,6 +271,7 @@ jobs:
           # https://github.com/nix-rust/nix/issues/2200
           #- target: armv7-unknown-linux-uclibceabihf
           - target: x86_64-unknown-haiku
+          - target: i686-unknown-hurd-gnu
     steps:
       - name: checkout
         uses: actions/checkout@v4

src/dir.rs

@@ -228,6 +228,7 @@ impl Entry {
                          target_os = "emscripten",
                          target_os = "fuchsia",
                          target_os = "haiku",
+                         target_os = "hurd",
                          solarish,
                          linux_android,
                          apple_targets))] {