Fix Android backend failing to build on Windows with n2

Cargo.lock

@@ -2599,6 +2599,7 @@ dependencies = [
  "anki_io",
  "anyhow",
  "camino",
+ "dunce",
  "globset",
  "itertools 0.11.0",
  "lazy_static",

Cargo.toml

@@ -143,6 +143,7 @@ zip = { version = "0.6.6", default-features = false, features = ["deflate", "tim
 zstd = { version = "0.13.0", features = ["zstdmt"] }
 envy = "0.4.2"
 dirs = "5.0.1"
+dunce = "1.0.4"
 
 # Apply mild optimizations to our dependencies in dev mode, which among other things
 # improves sha2 performance by about 21x. Opt 1 chosen due to

build/ninja_gen/Cargo.toml

@@ -11,6 +11,7 @@ rust-version.workspace = true
 anki_io.workspace = true
 anyhow.workspace = true
 camino.workspace = true
+dunce.workspace = true
 globset.workspace = true
 itertools.workspace = true
 lazy_static.workspace = true

build/ninja_gen/src/git.rs

@@ -46,7 +46,10 @@ fn locate_git_head() -> Option<BuildInput> {
         return Some(inputs![standard_path.to_string()]);
     }
 
-    let mut folder = Utf8Path::new(".").canonicalize_utf8().unwrap();
+    let mut folder = Utf8PathBuf::from_path_buf(
+        dunce::canonicalize(Utf8Path::new(".").canonicalize().unwrap()).unwrap(),
+    )
+    .unwrap();
     loop {
         let path = folder.join(".git").join("modules");
         if path.exists() {