use same feature is_sync as maybe_async

Author: brunob45

Cargo.toml

@@ -29,7 +29,7 @@ hex-literal = "0.4.1"
 sha2 = "0.10"
 
 [features]
-default = ["log"]
+default = ["log", "is_sync"]
 defmt-log = ["dep:defmt"]
 log = ["dep:log"]
-async = []
+is_sync = ["maybe-async/is_sync"]

src/filesystem/files.rs

@@ -4,9 +4,10 @@ use crate::{
     BlockDevice, Error, RawVolume, VolumeManager,
 };
 
-#[cfg(not(feature="async"))]
+#[cfg(feature="is_sync")]
 use embedded_io::{ErrorType, Read, Seek, SeekFrom, Write};
-#[cfg(feature="async")]
+
+#[cfg(not(feature="is_sync"))]
 use embedded_io_async::{ErrorType, Read, Seek, SeekFrom, Write};
 
 /// A handle for an open file on disk.

src/lib.rs

@@ -75,9 +75,10 @@ pub mod sdcard;
 
 use core::fmt::Debug;
 
-#[cfg(not(feature="async"))]
+#[cfg(feature="is_sync")]
 use embedded_io::ErrorKind;
-#[cfg(feature="async")]
+
+#[cfg(not(feature="is_sync"))]
 use embedded_io_async::ErrorKind;
 
 use filesystem::Handle;