radicle: Only set file limits on Unix

crates/radicle/Cargo.toml

@@ -26,7 +26,6 @@ fast-glob = { version = "0.3.2" }
 fastrand = { workspace = true }
 git2 = { workspace = true, features = ["vendored-libgit2"] }
 indexmap = { version = "2", features = ["serde"] }
-libc = { workspace = true }
 localtime = { workspace = true, features = ["serde"] }
 log = { workspace = true, features = ["std"] }
 multibase = { workspace = true }
@@ -46,6 +45,9 @@ tempfile = { workspace = true }
 thiserror = { workspace = true }
 unicode-normalization = { version = "0.1" }
 
+[target.'cfg(unix)'.dependencies]
+libc = { workspace = true }
+
 [dev-dependencies]
 emojis = "0.6"
 jsonschema = { version = "0.30", default-features = false }
@@ -53,4 +55,4 @@ pretty_assertions = { workspace = true }
 qcheck = { workspace = true }
 qcheck-macros = { workspace = true }
 radicle-cob = { workspace = true, features = ["stable-commit-ids"] }
-radicle-crypto = { workspace = true, features = ["test"] }
+radicle-crypto = { workspace = true, features = ["test"] }

crates/radicle/src/io.rs

@@ -1,14 +1,25 @@
-use std::fmt;
 use std::io;
 
+#[cfg(unix)]
 use libc::{getrlimit, rlim_t, rlimit, setrlimit, RLIMIT_NOFILE};
 
+#[cfg(unix)]
 type Int = rlim_t;
 
+#[cfg(not(unix))]
+#[inline]
+pub fn set_file_limit<T>(_: T) -> io::Result<()> {
+    Err(io::Error::new(
+        io::ErrorKind::Unsupported,
+        "setting file limits is not supported on this platform",
+    ))
+}
+
 /// Sets the open file limit to the given value, or the maximum allowed value.
+#[cfg(unix)]
 pub fn set_file_limit<N>(n: N) -> io::Result<Int>
 where
-    N: Copy + fmt::Display,
+    N: Copy + std::fmt::Display,
     Int: TryFrom<N>,
 {
     let Ok(n) = Int::try_from(n) else {