diff --git a/src/filesystem.rs b/src/filesystem.rs
deleted file mode 100644
index f651d65..0000000
--- a/src/filesystem.rs
+++ /dev/null
@@ -1,167 +0,0 @@
-#![allow(deprecated)]
-
-use std::{
-    ops::Deref,
-    path::PathBuf,
-    sync::{Arc, Mutex},
-};
-
-use tempfile::{tempdir, TempDir};
-use tracing::{debug, info};
-
-pub fn real(cwd: Option<PathBuf>) -> FileSystem {
-    let cwd = cwd.unwrap_or_default();
-    FileSystem::Real(RealFileSystem::new(cwd))
-}
-pub fn temp() -> std::io::Result<FileSystem> {
-    TempFileSystem::new().map(FileSystem::Temp)
-}
-
-#[derive(Clone, Debug)]
-#[deprecated(since = "1.1.0", note = "Use [kxio::fs::FileSystem] instead")]
-pub enum FileSystem {
-    Real(RealFileSystem),
-    Temp(TempFileSystem),
-}
-impl FileSystem {
-    #[deprecated(since = "1.1.0", note = "Use [kxio::filesystem::real()] instead")]
-    pub fn new_real(cwd: Option<PathBuf>) -> Self {
-        real(cwd)
-    }
-    #[deprecated(since = "1.1.0", note = "Use [kxio::filesystem::temp()] instead")]
-    pub fn new_temp() -> std::io::Result<Self> {
-        temp()
-    }
-}
-impl Deref for FileSystem {
-    type Target = dyn FileSystemLike;
-
-    fn deref(&self) -> &Self::Target {
-        match self {
-            Self::Real(env) => env,
-            Self::Temp(env) => env,
-        }
-    }
-}
-
-pub trait FileSystemLike: Sync + Send + std::fmt::Debug {
-    fn cwd(&self) -> &PathBuf;
-
-    fn in_cwd(&self, name: &str) -> PathBuf {
-        self.cwd().join(name)
-    }
-
-    fn write_file(&self, file_name: &str, content: &str) -> std::io::Result<PathBuf> {
-        use std::fs::File;
-        use std::io::{LineWriter, Write};
-
-        let path = self.in_cwd(file_name);
-        debug!("writing to {:?}", path);
-        let file = File::create(path.clone())?;
-        let mut file = LineWriter::new(file);
-        file.write_all(content.as_bytes())?;
-        Ok(path)
-    }
-
-    fn file_exists(&self, name: &PathBuf) -> bool {
-        use std::fs::File;
-        File::open(name).is_ok()
-    }
-
-    fn read_file(&self, file_name: &str) -> std::io::Result<String> {
-        use std::fs::File;
-        use std::io::Read;
-
-        let path = self.in_cwd(file_name);
-        debug!("reading from {:?}", path);
-        let mut file = File::open(path)?;
-        let mut content = String::new();
-        file.read_to_string(&mut content)?;
-        Ok(content)
-    }
-}
-
-#[derive(Clone, Debug, Default)]
-pub struct RealFileSystem {
-    cwd: PathBuf,
-}
-
-#[derive(Clone, Debug)]
-pub struct TempFileSystem {
-    cwd: PathBuf,
-
-    // Handle to the temporary directory
-    // When this handle is dropped the directory is deleted
-    _temp_dir: Arc<Mutex<TempDir>>,
-}
-
-impl FileSystemLike for TempFileSystem {
-    fn cwd(&self) -> &PathBuf {
-        &self.cwd
-    }
-}
-
-impl FileSystemLike for RealFileSystem {
-    fn cwd(&self) -> &PathBuf {
-        &self.cwd
-    }
-}
-
-impl RealFileSystem {
-    const fn new(cwd: PathBuf) -> Self {
-        Self { cwd }
-    }
-}
-
-impl TempFileSystem {
-    fn new() -> std::io::Result<Self> {
-        let temp_dir = tempdir()?;
-        info!("temp dir: {:?}", temp_dir.path());
-        let cwd = temp_dir.path().to_path_buf();
-        let temp_dir = Arc::new(Mutex::new(temp_dir));
-        Ok(Self {
-            cwd,
-            _temp_dir: temp_dir,
-        })
-    }
-}
-
-#[cfg(test)]
-mod tests {
-
-    use super::*;
-
-    use std::path::PathBuf;
-
-    #[test_log::test]
-    fn test_cwd() {
-        let cwd = PathBuf::from("/tmp");
-        let env = RealFileSystem::new(cwd.clone());
-        assert_eq!(env.cwd(), &cwd);
-    }
-
-    #[test_log::test]
-    fn test_create_on_temp_fs() -> std::io::Result<()> {
-        let env = TempFileSystem::new()?;
-        assert!(env.cwd().exists());
-        Ok(())
-    }
-
-    #[test_log::test]
-    fn test_create_on_real_fs() {
-        let cwd = PathBuf::from("/tmp");
-        let env = RealFileSystem::new(cwd.clone());
-        assert_eq!(env.cwd(), &cwd);
-    }
-
-    #[test_log::test]
-    fn test_write_and_read_file() -> std::io::Result<()> {
-        let env = TempFileSystem::new()?;
-        let file_name = "test.txt";
-        let content = "Hello, World!";
-        let path = env.write_file(file_name, content)?;
-        assert_eq!(env.read_file(file_name)?, content);
-        assert!(path.exists());
-        Ok(())
-    }
-}
diff --git a/src/lib.rs b/src/lib.rs
index 83c0cba..3bf5b20 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,4 @@
-#[cfg(feature = "fs")]
-pub mod filesystem;
-
+//
 #[cfg(feature = "fs")]
 pub mod fs;
 
diff --git a/src/tests/filesystem.rs b/src/tests/filesystem.rs
deleted file mode 100644
index ede71e9..0000000
--- a/src/tests/filesystem.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-type TestResult = Result<(), Box<dyn std::error::Error>>;
-
-#[test]
-fn write_read_file_exists() -> TestResult {
-    let fs = crate::filesystem::temp()?;
-    let pathbuf = fs.write_file("foo", "content")?;
-    let c = fs.read_file("foo")?;
-    assert_eq!(c, "content");
-    assert!(fs.file_exists(&pathbuf));
-
-    Ok(())
-}